How energy-efficient is your project building compared with the national average for similar building types? If your project building is already performing well, you may only need to document that performance in order to meet the prerequisite. If your building is relatively inefficient, on the other hand, may have to make operational changes or capital investments to make some improvements. Project teams with underperforming buildings may start by performing an energy audit to identify areas of waste, and the best opportunities for improving efficiency. There are a number of federal and regional programs that offer rebates or other financial incentives for energy upgrades, so capital investments may see relatively fast paybacks.
Accessing the Energy Star Portfolio Manager website.
All project teams are required to use EPA’s Energy Star Portfolio Manager to track a minimum 12 months of data for all energy consumption. The data are then benchmarked based on source Energy Use Intensity (EUI) to show compliance. Source EUI incorporates efficiency factors into an analysis of the total amount of raw fuel (or “source energy”) used to operate the building, rather than using the more limited measure of site energy, which reflects the amount of utility heat and electricity consumed at the building. Most buildings will benchmark through Energy Star and document the prerequisite through Case 1. Those not eligible for an Energy Star rating will use summary data generated in Portfolio Manager in conjunction with protocols provided by USGBC to complete benchmarking calculations and document the prerequisite and credit through Case 2.
Thirteen building space types are eligible for Energy Star ratings. Typically, if at least 50% of the building’s gross floor areaGross floor area (based on ASHRAE definition) is the sum of the floor areas of the spaces within the building, including basements, mezzanine and intermediate‐floored tiers, and penthouses wi th headroom height of 7.5 ft (2.2 meters) or greater. Measurements m ust be taken from the exterior 39 faces of exterior walls OR from the centerline of walls separating buildings, OR (for LEED CI certifying spaces) from the centerline of walls separating spaces. Excludes non‐en closed (or non‐enclosable) roofed‐over areas such as exterior covered walkways, porches, terraces or steps, roof overhangs, and similar features. Excludes air shafts, pipe trenches, and chimneys. Excludes floor area dedicated to the parking and circulation of motor vehicles. ( Note that while excluded features may not be part of the gross floor area, and therefore technically not a part of the LEED project building, they may still be required to be a part of the overall LEED project and subject to MPRs, prerequisites, and credits.) (excluding parking lots and garages) is classified as one of the following space types, the project is eligible and must use Case 1:
To ensure national comparability, climate data is used to normalize energy consumption to compare the project building to similar buildings in similar climate zones, eliminating potential regional variations. However, it may be easier in certain regions to improve a building’s efficiency based on city or state policies. For example, savings achieved through energy-efficiency improvements may qualify your project for state and local utility incentive programs. Ask local utility providers about incentives and rebate programs.
The updated Case 2 calculator (see resources section) uses Labs21 to facilitate benchmarking for buildings with laboratory spaces. The calculator includes specific directions to walk you through the process.
Yes, international projects that are comprised of ratable space under Energy Star must still pursue the EAp2/EAc1 via Case 1.
Generally, it is not possible to benchmark multiple buildings as a single entity on Portfolio Manager for Case 1 or for Case 2. Each building must be separately benchmarked as a standalone entity according to either Case 1 or Case 2 depending on the space type associated with each building. USGBC’s Application Guide for Multiple Buildings and On-Campus Projects is a good resource to reference in this type of scenario.
The first step is to enter the building and associated space characteristics on Portfolio Manager to see if the building is eligible for an Energy Star rating. If it is, you go with Case 1 and if not, go to the Case 2 calculator. Energy Star has published additional guidance for mixed-use buildings that is a great resource in this circumstance.
In this case it is a good idea to (1) reach out to Energy Star directly to determine if the structures should be benchmarked as a single building or two and then (2) reference the LEED Supplemental Guidance to the Minimum Program Requirements. If it is still unclear after those two steps are taken, it’s also a good idea to communicate with USGBC directly to confirm the best approach.
In order to use an Energy Star label for the streamlined path, the Label must have been awarded within 12 months of the LEED application submittal date. For example, if you receive label award notification from Energy Star on March 5, 2012, you can use the score associated with the label as long as you submit your application to GBCI on or before March 5, 2013.
Process loads generally may not be excluded from the building’s energy use for benchmarking purposes. However, depending on the appropriate compliance path, you may be able to normalize the energy use from process loads based on the relative activity level of the building operations. For example, if the building is a manufacturing facility, part of the benchmarking process will involve normalizing energy use based on the relative output of the facility. Use of CIRs in the case of special benchmarking for buildings with process loads is recommended.
For the LEED submission, provide a summary of submetered energy use for the project building along with the utility bills for the campus. Include a narrative summarizing the sub-metering approach and explaining the difference between the utility bills and the submetered energy use data included on Portfolio Manager, which commonly includes a spreadsheet showing the deductions from the total consumption used to show the energy attributable to the project, or how submeter readings for each separate entity add up to the whole reflected in the utility bills.
If you have a space that is submetered, is under separate management, and does not support the typical operations of the remaining portions of the building, this space may be excluded from the prerequisite.
When applicable variables change during the performance period, these changes must be recorded on Portfolio Manager to ensure accurate benchmarking of the building. When making updates to the space characteristics on Portfolio Manager, make sure to select “update” rather than “correct” and note the date when the updated space characteristic was first true. By selecting “update” the change in the building characteristic is only counted for the appropriate portion of the performance period rather than the whole thing. For example if 20% of the building space becomes vacant half way through the performance period, update the vacant space on Portfolio Manager so that the building was 100% occupied for half of the performance period and 80% occupied for the other half. In these circumstances, it is a good idea to provide a copy of the “Revision History” for affected spaces along with the prerequisite submittal.
For EAc6, the performance period should fall within 30 days of the latest performance period end date for all other credits and prerequisites. It should not follow the period of the Energy Star label associated with the streamlined path for EAp2.
The number of monitors in the building does not impact the number of computers entered into Portfolio Manager. The value for computers should reflect the total number of personal computers and servers in the office space. For example, if the office space includes 10 PCs, 5 laptops, and 25 monitors, the input for Portfolio Manager is 15 PCs.
For office buildings, if the vacant space is greater than 10% of the building area use the following guidance as indicated in the USGBC Reduced Occupancy Guidance document. For all other space types, no other changes are required for this credit.
Assess current performance and Energy Star eligibility. Benchmark current performance based on the option that applies to the project building. Make operational improvements or equipment upgrades to meet minimum energy performance requirements.
Benchmarking can typically be managed by in-house staff, reducing capital investment.
Review “15 O&M Best Practices for Energy-Efficient Buildings,” a helpful document published by Portland Energy Conservation, Inc. (PECI) to assist facility managers and building owners with basic energy-efficiency issues.
Provide building operators with access to BOMA’s BEEP (Building Energy Efficiency Program) training webinars to maintain regular and effective training for personnel responsible for daily building operations.
Collect energy metering data for a minimum period of the most recent twelve months.
Be sure that information is copied accurately from utility bills, including start and end dates of the statement period, and that you are using actual meter readings as opposed to estimated readings whenever possible. Replace estimated meter readings with actual meter readings once those statements are received. Exporting data inputs from Energy Star and graphing the utility data can help uncover data entry errors through visual comparison.
Energy Star requires precise data to describe the different space types in the building, including the square footage, number of occupants and computers, and other characteristics of daily operations. Careful inventory of these variables will result in a more accurate rating.
Energy metering data may be excluded for up to 10% of the building’s gross floor area if that space is sub-metered and used for an independent purpose unrelated to typical business operations, such as a cafeteria; or used as a computer data center.
LEED defers to Energy Star practices and standards to generate a Portfolio Manager rating or score. Where questions arise regarding this score, review Energy Star technical guidance documents and contact Energy Star customer service to facilitate the process.
If you initially get a low Energy Star score, start your process by identifying no- and low-cost operational changes to reduce energy consumption. If your building is an energy hog, it’s more likely that these opportunities will exist, and focusing on them to start with will help you go the distance. For instance, simply changing heating and cooling set points by one or two degrees and getting into the practice of turning off lights and office equipment when not in use will have dramatic effects on overall building energy use.
Building owners can reduce overall operating costs by optimizing energy performance; many operational energy-efficiency improvements will provide instant or short-term paybacks.
Pursuing commissioning through EAc2 will help identify energy-efficiency improvements, and will pay off particularly well in inefficient buildings.
Many state and federal agencies offer rebates or other financial incentives to companies that undertake energy-efficiency initiatives.
For building types covered by Energy Star but located outside the U.S., use Case 1. Portfolio Manager proivdes a list of non-U.S. locations, but it is not complete. If the location for an international project is not listed, consult ASHRAE 90.1-2007 Appendices B and B to determine a comparable U.S. city.
Continue entering monthly metering data into Portfolio Manager to update the building data.
Closely monitor energy consumption and correct any conditions contributing to energy waste.
Track any changes in occupancy or space uses, if any, to adjust Portfolio Manager inputs accordingly.
Expect no costs for in-house calculations or tracking and minimal costs when using a consultant to complete calculations using provided data.
Provide documentation of the Energy Star rating or certificate award from the EPA.
You must generate an Energy Star score if the building type is listed as an eligible space in Portfolio Manager. Case 2 is not allowed for buildings eligible for Energy Star.
Complete the EAp2/EAc1 Case 2 Calculator to demonstrate the building’s level of energy efficiency.
Use figures generated in Portfolio Manager to complete the EAp2/EAc1 Case 2 Calculator spreadsheet.
If the building type is listed in Portfolio Manager, but is not eligible for an Energy Star score, then you will most likely be able to use the Option 1 of the EAp2/EAc1 Case 2 Calculator. Complete the “Eligibility” Tab of the Option EAp2/EAc1 Case 2 Calculator to confirm which option you should use.
Provide one of the following data summaries:
If determining the Energy Baseline Including Historical Data, the three years of data must fall within six years of the beginning of the performance period.
If the project building type is not listed in Portfolio Manager, and more than 10% of the building space must be entered into Portfolio Manager as “other,” then you will most likely need to use the Option C calculator. Complete the “Eligibility” Tab of the EAp2/EAc1 Case 2 Calculator to confirm which option you should use.
Industry reports may provide useful benchmarking comparisons and eliminate the need for you to locate three comparable buildings on your own. The International Facility Management Association (IFMA) publishes benchmarking reports that are available on its website.
Excerpted from LEED 2009 for Existing Buildings: Operations & Maintenance
To establish the minimum level of operating energy efficiency performance relative to typical buildings of similar type to reduce environmental and economic impacts associated with excessive energy use.
For buildings eligible to receive an energy performance rating using the EPA’s ENERGY STAR® Portfolio Manager tool, achieve an energy performance rating of at least 69. If the building is eligible for an energy performance rating using Portfolio Manager, Option 1 must be used.
Have energy meters that measure all energy use throughout the performance period of all buildings to be certified. Each building’s energy performance must be based on actual metered energy consumption for the LEED project building(s). A full 12 months of continuous measured energy data is required.
Calibrate meters within the manufacturer’s recommended interval if the building owner, management organization or tenant owns the meter. Meters owned by third parties (e.g., utilities or governments) are exempt.
For buildings with a primary space type not eligible to receive an energy performance rating using Portfolio Manager, comply with 1 of the following:
Demonstrate energy efficiency performance that is better than 69% of similar buildings (69th percentile or better) by benchmarking against national source energySource energy is the total amount of raw fuel required to operate a building; it incorporates all transmission, delivery, and production losses for a complete assessment of a building's energy use. data provided in the Portfolio Manager tool as an alternative to energy performance ratings. Projects outside the U.S. may use a local benchmark based on source energy from their country's national or regional energy agency. Follow the detailed instructions in the LEED Reference Guide for Green Building Operations & Maintenance, 2009 Edition.
Demonstrate energy efficiency performance by determining an alternative rating score using the Portfolio Manager tool to report the building's energy use data from the performance period. Follow the detailed instructions in the LEED Reference Guide for Green Building Operations & Maintenance, 2009 Edition.
Enter energy use data during the performance period for at least 1 year into Portfolio Manager to determine the “weather-normalized source energy intensity”. Use this value in the offline calculator to determine the percent reduction from the streamlined baseline.
Enter at least 3 consecutive years of historical energy use data into Portfolio Manager in addition to the current year’s data to determine the “weather-normalized source energy intensity” for each year. Use these values in the offline calculator to determine a baseline using the historical energy use data of the project building.
In addition to the historical data used in Option 2b, provide energy use data for at least 3 other buildings with similar uses over at least a 2-year period to determine the “average energy performance of a similar building” in Portfolio Manager. Enter this data into the offline calculator.
Achieve energy efficiency performance better than the minimum requirements listed above; points are awarded according to the table below.
Have energy meters that measure all energy use throughout the performance period of all buildings to be certified. Each building’s energy performance must be based on actual metered energy consumption for both the LEED project and all comparable buildings used for the benchmark. A full 12 months of continuous measured energy data is required.
Use the Portfolio Manager tool available on the ENERGY STAR website to benchmark the project even if it is not eligible for an EPA rating: http://www.energystar.gov/benchmark.
You may use the LEED v4 version of this credit on v2009 projects. For more information check out this article.
This credit has an alternative compliance path available for the use of ISO 50001: Energy Management Systems. For more information see Pilot ACP 86: LEED 2009 EBOM ACPs for ISO 50001.
Existing building commissioning and energy audits will help identify areas of building operations that are not efficient. Implement energy-efficient retrofits and energy-saving techniques to reduce the building’s energy use. Energy-efficient equipment such as office equipment, maintenance equipment and appliances will aid in the reduction of energy waste. Employ the use of meters on major mechanical systems to effectively monitor the energy consumption of each.
In addition to efficiency improvements, consider renewable energy options as a way to minimize the building’s environmental impact.
EPA's system for helping you track and improve energy efficiency across your entire portfolio of buildings.
A helpful guide for use of Portfolio Manager to track energy utility data.
A helpful guide to assist facility managers with best practices for common energy-efficiency issues.
Required reference document for DES systems in LEED energy credits.
Portfolio Manager explains the eligibility requirements for tracking and benchmarking energy use over time in commercial and institutional buildings.
Calculator for LEED-EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems., optimizing energy efficiency performance.
IFMAInternational Facility Management Association is the largest international facilities managers' organization.
The Building Owners and Managers Association International (BOMA) has a program called BOMA Energy Efficiency Program (BEEP). BEEP
ENERGY STAR offers free online training to help you improve the energy performance of your organization.
ASHRAE publishes widely used standards and publishes the ASHRAE Journal.
Complete LEED Online documentation for achievement of EAp2 on a certified Gold LEED-EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. 2009 project in Denver, Colorado.
This annotated sample of the LEED Online form demonstrates how to document EAp2 and EAc1.
The following links take you to the public, informational versions of the dynamic LEED Online forms for each EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems.-2009 EA credit. You'll need to fill out the live versions of these forms on LEED Online for each credit you hope to earn.
These links are posted by LEEDuser with USGBC's permission. USGBC has certain usage restrictions for these forms; for more information, visit LEED Online and click "Sample Forms Download."
The storage building is not pursuing certification and is attached from the building so it should not be part of the benchmark but you must decide whether or not it will be in the boundary. You should refer to the LEED MPRs for guidance on multiple buildings. As for the heaters, they do not serve the building function or mechanical systems so my suggestion is that they are not included. my suggestion is to stick to the guidance offered by Energy Star in bench marking these to buildings appropriately. Hope this helps!
Thank you, Jeff. For clarification: the storage building is not attached. Also, it is used in the summer as a materials testing lab (concrete and aggregate testing). The annual average FTEFull-time equivalent (FTE) represents a regular building occupant who spends 8 hours a day (40 hours a week) in the project building. Part-time or overtime occupants have FTE values based on their hours per day divided by 8 (or hours per week divided by 40). Transient Occupants can be reported as either daily totals or as part of the FTE. Residential occupancy should be estimated based on the number and size of units. Core and Shell projects should refer to the default occupancy table in the Reference Guide appendix. All occupant assumptions must be consistent across all credits in all categories. is 0.25, so it is ineligible for LEED certification, per MPR#5.
So, from my reading of MPR#3, it seems that the storage building can be treated "as an extension of the certifying building" (this is from the "NON-LEED CERTIFIABLE BUILDING ON SITE" paragraph on p.26 of the MPR Supplemental Guidance, Revison #2)
Can you please tell me if I am applying the MPR guidance correctly? I also now see that there is a 'parking lot' space type in PM, so I think I should include the headbolt heaters in that space type. Does that sound right?
Finally, somewhere in the MPR guidance, it mentions dividing up supporting land (parking, hardscapeHardscape consists of the inanimate elements of the building landscaping. Examples include pavement, roadways, stone walls, concrete paths and sidewalks, and concrete, brick, and tile patios., etc.) proportionally if it is shared with another building. Using that logic, should I proportionally assign the electrical usage of the parking lot (headbolt heaters) to each building, according to the FTE breakdown?
So I'll leave the MPR question to folks better qualified than myself to answer, but on the headbolt heater question I would agree that the energy used by those heaters should be included in your PM energy analysis just as you would parking lot lights. I have no idea how common or rare those are in Alaska, but theoretically PM Tool's climate normalization should be comparing your building to building's in a similar climate, and therefore dealing with a similar issue of getting cars to start.
That being said, Alaska is likely the extreme end of that climate zoneOne of five climatically distinct areas, defined by long-term weather conditions which affect the heating and cooling loads in buildings. The zones were determined according to the 45-year average (1931-1975) of the annual heating and cooling degree-days (base 65 degrees Fahrenheit). An individual building was assigned to a climate zone according to the 45-year average annual degree-days for its National Oceanic and Atmospheric Administration (NOAA) Division. and I'm not confident there would be many buildings in Fairbanks in the CBECSThe Commercial Buildings Energy Consumption Survey (CBECS) is a national sample survey that collects information on the stock of U.S. commercial buildings, their energy-related building characteristics, and their energy consumption and expenditures. Commercial buildings include all buildings in which at least half of the floorspace is used for a purpose that is not residential, industrial, or agricultural, so they include building types that might not traditionally be considered "commercial," such as schools, correctional institutions, and buildings used for religious worship. CBECS data is used in LEED energy credits. data set. So if your Energy Star Rating seemed off, I'd take a second look at it with the headbolt heaters pulled out and consider requesting an interpretation from GBCI if that situation seemed more accurate.
Hope that helps,
Thank you very much, Dan. I think you are exactly right about the climate zoneOne of five climatically distinct areas, defined by long-term weather conditions which affect the heating and cooling loads in buildings. The zones were determined according to the 45-year average (1931-1975) of the annual heating and cooling degree-days (base 65 degrees Fahrenheit). An individual building was assigned to a climate zone according to the 45-year average annual degree-days for its National Oceanic and Atmospheric Administration (NOAA) Division. and the lack of CBECSThe Commercial Buildings Energy Consumption Survey (CBECS) is a national sample survey that collects information on the stock of U.S. commercial buildings, their energy-related building characteristics, and their energy consumption and expenditures. Commercial buildings include all buildings in which at least half of the floorspace is used for a purpose that is not residential, industrial, or agricultural, so they include building types that might not traditionally be considered "commercial," such as schools, correctional institutions, and buildings used for religious worship. CBECS data is used in LEED energy credits. data sets - that's a typical problem with "national" standards and design principles applied to our climate. Since this will be the first EB-O+M project in the Alaskan Interior, the issue will likely be new to GBCI, as well. Since this question affects all EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. projects in this region, do you think it would be a LEED InterpretationLEED Interpretations are official answers to technical inquiries about implementing LEED on a project. They help people understand how their projects can meet LEED requirements and provide clarity on existing options. LEED Interpretations are to be used by any project certifying under an applicable rating system. All project teams are required to adhere to all LEED Interpretations posted before their registration date. This also applies to other addenda. Adherence to rulings posted after a project registers is optional, but strongly encouraged. LEED Interpretations are published in a searchable database at usgbc.org. instead of a CIRCredit Interpretation Ruling. Used by design team members experiencing difficulties in the application of a LEED prerequisite or credit to a project. Typically, difficulties arise when specific issues are not directly addressed by LEED information/guide? Thanks again, Dan.
By the way, vehicle "plug ins" are installed on every car in Alaska (and they usually improve vehicle emissions and reduce idle times).
Unlike the rest of the MPRs, MPR 5 (re: min FTEFull-time equivalent (FTE) represents a regular building occupant who spends 8 hours a day (40 hours a week) in the project building. Part-time or overtime occupants have FTE values based on their hours per day divided by 8 (or hours per week divided by 40). Transient Occupants can be reported as either daily totals or as part of the FTE. Residential occupancy should be estimated based on the number and size of units. Core and Shell projects should refer to the default occupancy table in the Reference Guide appendix. All occupant assumptions must be consistent across all credits in all categories.) is not a make-it-or-break-it requirement for LEED eligibility, which often leads to confusion. If a building has less than 1 annualized FTE, it simply means that building is not eligible for any IEQ credit points, not that it is "non-LEED-certifiable". Usually, a building is only truly "non-LEED-certifiable" if it has less than 1,000 sf of gross floor areaGross floor area (based on ASHRAE definition) is the sum of the floor areas of the spaces within the building, including basements, mezzanine and intermediate‐floored tiers, and penthouses wi th headroom height of 7.5 ft (2.2 meters) or greater. Measurements m ust be taken from the exterior 39 faces of exterior walls OR from the centerline of walls separating buildings, OR (for LEED CI certifying spaces) from the centerline of walls separating spaces. Excludes non‐en closed (or non‐enclosable) roofed‐over areas such as exterior covered walkways, porches, terraces or steps, roof overhangs, and similar features. Excludes air shafts, pipe trenches, and chimneys. Excludes floor area dedicated to the parking and circulation of motor vehicles. ( Note that while excluded features may not be part of the gross floor area, and therefore technically not a part of the LEED project building, they may still be required to be a part of the overall LEED project and subject to MPRs, prerequisites, and credits.) (and, thus, cannot meet MPR 4).
That said, in some cases there are structures that solely support the normal operations of the main LEED project building that also happen to contain 1,000 sf or more of gross floor area. In that case it is not always clear-cut whether these should be treated as separate buildings or extensions of the main project building. These are project-specific, special circumstances which are best addressed in advance of the certification review via the formal inquiry process (https://www.leedonline.com/irj/go/km/docs/documents/usgbc/leed/config/co...).
It would be the project team's option whether to submit these issues as CIRs or LIs. It seems like the topics could be framed in such a way as to have broad-enough applicability that they would be appropriate to either type of inquiry. USGBC will refund the LI portion of a formal inquiry fee if they deem the inquiry too project specific and, therefore, are unwilling to issue a public LI ruling on the matter. Please refer to the LI FAQ for more guidance (https://www.usgbc.org/ShowFile.aspx?DocumentID=8858).
Thanks for your attention, Eric. The ancillary building in question is less than 1,000 sf. Given that information, is my understanding correct that it is "non-LEED-certifiable"? Further, am I correct in understanding that this building can be treated "as an extension of the certifying building"? Finally - does this mean I should include its energy use (and square footage and PC) in Portfolio Manager? Thank you.
Our building don´t have a good energy efficiency, the commissioning process indicate many ways to obtain a good energy efficiency, we are doing first the low cost way and after the high cost way, but we think that the implementation of all improvements will spend more than two years. Can we start the LEED EB process before the implementation of all improvements? In the EAp3 we can do a phasing out process because the cost involved in this case is very high, in our EAp2 case the cost is high too, can we obtain the LEED EB certification before the end of application of all energy improvement, before two or three years? Tks.
Hi Paulo, although not recommended if you have these many barriers with finances, you can of course start with the process but just know that the success of certification will be weighing on the energy performance of the building. You may want to look at this guidance for buildings that do not meet the LEED thresholds in EAp2 http://www.usgbc.org/DisplayPage.aspx?CMSPageID=2625.
Thanks for pointing Paulo to that "Energy Jumpstart" pilot prerequisite. This is exactly the situation that it should apply to. I'm curious if anyone has tried it, or considered using it.
Hi Jeff, thank you for your quick answer. I think that the Pilot Credit 67 is really interesting, but our building is a Laboratory and in not an Energy Star eligible building. Do you think that is possible try the Pilot Credit 67 for a certification LEED EB of a Laboratory? Tks!
Hi Paulo. That changes things. The language is pretty clear that "Those pursuing Pilot Credit 67 must be an ENERGY STAR-eligible building type."
However, if you want to still explore this option further you might try asking the question on LEEDuser's page for that pilot prerequisite, and see if anyone from USGBC responds.
And/or contact the USGBC directly! I wouldn't necessarily wait in case someone happens to see the post on the message board.
Thanks Nadav and David for your help, we will try our best to have the LEED EB certification and the information of this discussion is a great help.
We are undertaking the difficult task of LEED EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. certification for a mall with many retail tenants that are metered separately and pay their own utllities directly. There are numerous smaller "inline" tenants as well as a few large "anchors." The utility provided us with meter data for all of the inline tenants, but not for the anchors, and I'm not sure we'll be able to get it. Can we exclude them from our LEED boundary or will that raise red flags?
Red Flag City Jill! Those anchor tenants are a major source of energy consumption for the building, and their data 100% definitely must be included for EAp2/c1 purposes. All energy consumed by the building must be included. Malls pose an interesting challenge for EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems., and this is one of the most significant ways. I hope you can work with the tenants to collect that information - best of luck to you.
Thanks, Dan, I totally agree, but work with some folks who recall the days of LEED when you could be more "creative" with drawing your own boundaries, espeically for NC, and wanted to get some outside opinions! The good news is that we have since obtained the anchors' meter data and determined that we meet the Prereq with a couple points to spare for EAc1.
we have an office building in Slovakia that was occupied by one tenant till this summer. Now, the tenant left the building and an owner prepares a partial reconstruction (cooling system that was extremely unsufficient, there were no server rooms cooling, etc.). The reconstruction begins in Jan/2013 and will be finished in some 3 months.
This is not a case of major reconstruction, the rest of building will be unchanged.
The building will be used as a multi-tenant after the reconstruction.
We have energy and water data several years ago.
I would like to ask how to handle with EAp2 because:
- there is no tenant now
- the previous energy systems were extremely inefficient but the total consumption was relatively low because of missing cooling systems.
Is the EB:OM the appropriate scheme at all? (NC is not applicable because the building is older and there is no chance to fulfill all the ASHRAE requirements).
How to compare the previous and the future consumption? The new consumption will be optimized after the reconstruction and there will be no decrease during first year of occupancy.
Thank you for any advise.
You can read this - Reduced Occupancy Guidance for LEED 2009 Existing Buildings: Operations & Maintenance and LEED for Existing Buildings: Operations & Maintenance v2008 - http://www.usgbc.org/ShowFile.aspx?DocumentID=6292 or just give me a call.
This one is handy also - LEED Rating System Selection Guidance - http://www.usgbc.org/ShowFile.aspx?DocumentID=6292
Eric beat me to the answer - you need to have 50% occupancy throughout the performance period. This means you really can't begin the EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. certification process until 12 months after the building reaches 50% occupancy as you need a 12 month performance period for EAp2.
Thank you very much. This is what I have suspected.
Really is there not any possibility to compare the year before reconstruction and the year after (assuming at least 50% occupancy after reconstruction) or take the last "fully occupied year" for comparison? The building was fully occupied before reconstruction and data is available. The problem is in the reconstruction period only.
Maybe you could use one of the Global Compliance paths or request an alternative compliance method / CIRCredit Interpretation Ruling. Used by design team members experiencing difficulties in the application of a LEED prerequisite or credit to a project. Typically, difficulties arise when specific issues are not directly addressed by LEED information/guide? - https://www.usgbc.org/ShowFile.aspx?DocumentID=19178:
Projects outside the U.S. may use a local benchmark based on source energySource energy is the total amount of raw fuel required to operate a building; it incorporates all transmission, delivery, and production losses for a complete assessment of a building's energy use. from their country’s national or regional energy agency.
If you have a new tenant coming in when the renovation is done then there should be a way to deal with the down time.
How does the historical data look in Portfolio Manager?
Thanks for reply. We have not analyzed data yet, we are at the beginning of the process and trying to estimate milestones and schedule for the project. The data analysis will be probably very useful information. If the energy consumption looks good, can we use this information as a proof of EAp2 even if the building is under reconstruction now? Again - the last data with full occupancy are several months old.
We are trying to certify a laboratory in Brazil, and we are using the USGBC Calculator and the LABS21. Analyzing the Case 2 – Option 1 – Labs we identified that the USGBC Calculator use two specific data to calculate the Energy Efficiency of the laboratory, the Source EnergySource energy is the total amount of raw fuel required to operate a building; it incorporates all transmission, delivery, and production losses for a complete assessment of a building's energy use. Use Intensity (from Portfolio Manager) and the National Average (from Labs21), the both data are the building energy consumption per space (kBtu/sf). If we try to do the simulation using just the Portfolio Energy, when is possible by the building type, I can introduce the Data Center consumption, that help me to improve the Current Rating, but in the case of Laboratory (that use the USGBC Calculator), introduce the Data Center consumption in the Portfolio Manager don´t change the result of the simulation, because use just the energy consumption of the building (of the bill energy) per space. The building that we are trying to certify is 66% laboratory and 34% headquarter office of a big laboratory company, and the Data Center spends 18% of the building energy, can we separate the Data Center consumption of the building consumption and use just the building consumption for the EAp2 Case 2 simulation? Tks.
The project is a 3 story office building with interior fit out and 3 level garage. Within the building there is manufacturing portion which consumes a huge amount of electricity and mechanical energy, and we feel with the huge amounts of power getting the building to be LEED Silver certified may not be possible. So my question, is there a way we can separate the office building LEED credit from the manufacturing area even though they are within the same footprint?
Unless I am missing some nuance in your question the answer is no. LEED EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. requires that you certify the whole building. LEED EBOM also includes an Energy Star threshold of 71 which it sounds like this building might have trouble achieving. Per the LEEDuser guidance above, you should check that before you pursue certification.
You mention a "tenant fit-out" in your description. If this work is happening now it might be eligible LEED for Commercial Interiors.
Originally when I submitted the question I thought it was for an existing building turns out it is for a new one. The way the architect phrased the question led me to believe it was existing.
so you would suggest a commercial interior? This is a new building. That I am aware of no tenants yet therefore I'm not sure how commercial interiors would work? The architect would like to shoot for Silver but due to the manufacturing portion and the large consumption of energy is there any possible way to make that space it's own entity even within the same footprint of the building?
If it is a new building and there are no tenants than it sounds like the Core & Shell standard might be the most applicable. Depending on the % of the manufacturing portion and the relationship to the building ownership that portion may not have to be included (meaning, you might be able to treat it like a tenant.) Take a look at the requirements for C&S as well as NC to determine which is applicable. When you have determined that you should post your questions over on the appropriate forum- this is the string for EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. projects. Happy to help with those questions when you have decided on a direction.
Hi Tim, While they may have less impact than spaces that are directly affected by the LEED-CS project Owner's scope of work, tenant spaces cannot be entirely excluded from the analysis of a LEED-CS project. Just like EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems., the BD+C rating systems (such as NC & CS) are intended for 'whole buildings' even if they contain mixed uses or spaces under another party's control (e.g. tenant spaces). You may find it helpful to review the LEED Rating System Selection Guidance (www.usgbc.org/ShowFile.aspx?DocumentID=6667) if you have not already done so. As noted there, per the 40/60 Rule, at least 40% of the total gross floor areaGross floor area (based on ASHRAE definition) is the sum of the floor areas of the spaces within the building, including basements, mezzanine and intermediate‐floored tiers, and penthouses wi th headroom height of 7.5 ft (2.2 meters) or greater. Measurements m ust be taken from the exterior 39 faces of exterior walls OR from the centerline of walls separating buildings, OR (for LEED CI certifying spaces) from the centerline of walls separating spaces. Excludes non‐en closed (or non‐enclosable) roofed‐over areas such as exterior covered walkways, porches, terraces or steps, roof overhangs, and similar features. Excludes air shafts, pipe trenches, and chimneys. Excludes floor area dedicated to the parking and circulation of motor vehicles. ( Note that while excluded features may not be part of the gross floor area, and therefore technically not a part of the LEED project building, they may still be required to be a part of the overall LEED project and subject to MPRs, prerequisites, and credits.) of the building (including the tenant spaces in this calculation) must be undergoing new construction &/or major renovation in order to use the LEED-CS rating system.
It would also be good to note that there are pretty stringent criteria that must be met (including not only separate Space Use Type or Management, but also separate Ownership, for example) for project teams wanting to certify a major renovation of a portion of a single structure as a separate LEED BD+C project. Please refer to pages 14-17 and page 22 of the LEED 2009 MPR Supplemental Guidance (http://www.usgbc.org/ShowFile.aspx?DocumentID=10131) for full criteria and additional details on this topic.
We are trying to certify a conference center that has NO category under portfolio manager. We are using the calculator found at the USGBC how ever our occupation and energy use varies depending on how much the conference center is leased. they have worked on several energy imporvements and we are currently performing ongoing commissioning how ever non of the calculatiosn give a true picture of how the energy is being saved because it is consumed more because the conference center is being more succesfull atraccting clients so we spend more energy how ever more efficiently
do you know if we can have a per person per even use and justify our improvements compared with previous years
I don't have any personal experience with EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. and conference centers, but the Oregon Convention Center, here in Portland, was the first convention center to be LEED EBOM certified, was later recertified at Silver, and is now in the process of pursuing recertification at Gold. They might be a good resource for your questions.
The OCC's Sustainability web page (http://www.oregoncc.org/Sustainability/) includes contact information for their Sustainability Coordinator, Brittin Witzenburg.
Alicia - I think Michaels suggestion is a great one, and I would add that for buildings like convention centers where use levels can vary dramatically, an approach like the one you propose is the only logical way to tackle the problem. My experience is that the occupancy rate of a convention center can vary wildly from year to year, making comparisons over time (or even to a national average that might reflect a different use rate) useless without normalization. Fortunately EAp2 does allow for that kind of normalization, but the onus is on applicants to figure out the right methodology and explain it to GBCI. I can imagine a convention center coming up with a metric based on the energy per square foot per occupant hour or something similar. Challenges aplenty, but I think you will find open minds at GBCI on this topic. And of course, getting a formal interpretation for your project on the issue makes a lot of sense. . .
Hi Alicia! you are not alone! There are a several convention/conference trying to pursue LEED EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems.. I suggest you contact Energy Star or Brittin as Michael mention since she manages the Energy Star working group for convention facilities. There you can get information and analyze past usage from others in order to help you fill out the EA Prerequisite 2 / Credit 1 Case 2 Calculator. Keep in mind, that the correct method to use the calculator for CCs is not standardized by GBCI and the reviewers as I know CCs that have taken different paths. You can use the various paths depending on what will give you the most points. Good Luck!
Alica-- Per Jeff's suggestion, there is definitely a convention facilities group in Energy Star that you should work to become a part of. Additionally, as part of a 2+ year building performance case study on the David L. Lawrence Convention Center here in Pittsburgh, we did a lot of benchmarking in the convention industry that may be of interest / use (energy, water, waste, etc.). The 50+ page report summary is available online if you want to get the "short" version: www.go-gba.org/dlcc. We will also be talking about the effort at Greenbuild this year.
My group is currently planning to have photovoltaic panels and the appropriate electricity meters installed on the LEED EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. project building. A number of the performance periods have already begun, while others have yet to begin. It is my understanding that only the EAp2 and EAc1 (both of which the project is pursuing) require a 1 year performance period, and that EAc4 only requires a 3 month performance period. Is this correct?
A part of the EAp2 credit form is a bit confusing. It reads, "Enter the start and end dates for the EA Credit 4 performance period. If EA Credit 4 is not being pursued, enter the start and end dates for a period of at least three (3) months and no longer than two (2) years over which on-site renewable energy data."
However, it does not go on to say what to do if EAc4 is being pursued. Is our three month performance period for EAc4 (measured and recorded energy usage with PV panels) and our one year performance period for EAp2 and EAc1 OK? (with three months of alternative energy affecting its' outcome).
Or, do we have to monitor the electricity usage with the PV panels for a year to receive credit for EAp2, EAc1 and EAc4?
Yes David, you're correct. The perf. period for EAc4 is a minimum of 3 months, not 12.
An office building that my organization manages and that we are considering for certification has been (and will continue to for at least a year) provide electricity to a construction project located next door. In 2011, the electricity accounted for approximately 3% of total energy consumption. Is there any way to account for this in ESPM, given that the electricity is not feeding any part of the building but an off-site project?
It sounds like you are metering the supply to the construction site. If so, you can simply net it out of the building's meter reading and report the net amount to PM. (I don't recall if there is provision in PM for. Statice meters for this type of situation.)
I would be sure to cover this in a narrative comment for EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. though.)
We are metering the data. Thanks for the help Michael.
Our performance period start from May to July, but we just can calib the power monitors in next shutdown in August. So can we just show that we have a plan to calib by showing the Purchase Order of calibration in Sept ?
LEED is unclear on this point, so if you don't find an answer after searching the LEED Interpretations I recommend submitting a CIRCredit Interpretation Ruling. Used by design team members experiencing difficulties in the application of a LEED prerequisite or credit to a project. Typically, difficulties arise when specific issues are not directly addressed by LEED information/guide for your project to get an official ruling from GBCI.
I'm working on a existing office building that is intended to pursue LEED EB:OM certification. Based on preliminary assumptions I'm afraid it wouldn't be able to achieve the 69 score necessary to comply with the prerequisite.
If my resulting score is below 69, what should I do to certify this building?. Should I implement energy efficiency measures and wait a year to justify those measures with energy bills? or Should I implement the measures and justify the energy efficiency with path 2?
What is the correct path to follow in this scenario?
You don't need to wait a year to see the impact of the energy efficiency measures you implement - your Portfolio Manager score should start to rise as your efficiency improves. To get the full impact you would need to wait a year - how long it will take to get to 69 depends on where you are now and how much of an impact you can make. That said, I would look at path 2 as well to see which produced results faster (and more points for EAc1).
Michael is absolutely right about the score rising over time as efficiency improves, and that process may take less than a year (to surpass 69). However, Cases 1 and 2 shouldn't be viewed as 'options' from which you can select the more favorable route - if your building is indeed an office building, and therefore rateable in Energy Star, you are required to use Case 1. Case 2 is only for non-rateable building types and can't be substituted.
Hope that clarifies things a bit.
How to correctly input energy data (to ES Portfolio Manager) for an office building where a tenant (bank) has it's own chiller, consumes almost one third of the total building energy consumption and it's square footage is only 4 % of the total building area. Because of this the building's score is very low and it is not even able to reach the necessary threshold for successful certification.
Thank you for any suggestions!
From the description of the tenant-owned chiller, it might be possible that the Portfolio Manager account isn't correctly accounting for a data center facility within the building? These cases can be a challenge, however all energy usage in the building should be included. An energy audit might help your client determine where the energy use is going, and how this impacts the ENERGY STAR entry.
Our office building has data center space which is submetered but before the UPS rather than after. I received a reply from Energy Star indicating the following:
"ENERGY STAR is currently exploring acceptable alternative approaches for measuring IT energy such as allowing measurement on the input to the UPS (with a conservative factor for the efficiency of the UPS applied within Portfolio Manager). If accepted as a valid approach, this would allow you to measure at your existing meter. Additionally, ENERGY STAR has extended the availability of Portfolio Manager Generated IT energy estimates for Data Centers that comprise 10% or less of a building’s gross square foot. The estimates will be permitted until the upgraded version of Portfolio Manager is released in the first quarter of 2013."
My question is, can I use these estimated values to calculate my building’s Energy Star Rating for our certification since Energy Star currently accepts them(our performance period is over in December 2012), or are these values considered “default for space attributes or operating variables?” I need to make sure as the impact on our score is pretty significant.
Would a college building -full of classrooms, with 1 auditorium go under "Office" or does Energy Star simply not have a category for us?
Hi Maria, Unfortunately no. The rating that you would get would just not be the same. You could of course do it for fun! My suggestion would be to compare it to the other buildings on your campus or reach out to Energy Star and get on the higher education working group for additional resources and potentially compare to others.
Hi Jeff, I am in the same situation as Maria. Can you tell a little more about the Higher Ed working group?
Hi Maria and George,
I am working on a project that sounds very similar - a building that is exclusively classrooms and lecture halls with no administrative offices or related space uses at all. Using the 'office' space type in Energy Star is not appropriate for a building of this sort, and CBECSThe Commercial Buildings Energy Consumption Survey (CBECS) is a national sample survey that collects information on the stock of U.S. commercial buildings, their energy-related building characteristics, and their energy consumption and expenditures. Commercial buildings include all buildings in which at least half of the floorspace is used for a purpose that is not residential, industrial, or agricultural, so they include building types that might not traditionally be considered "commercial," such as schools, correctional institutions, and buildings used for religious worship. CBECS data is used in LEED energy credits. currently provides a classroom EUI figure that is extremely low (enough so as to be unreasonable for the buildings we have sought to compare it to), possibly because it is based largely on K-12 classrooms. The good news is that my project has developed and proposed a solution to GBCI that we are very optimistic about and GBCI is actively working with us to evaluate the proposal. We are hoping they will release a public interpretation on the topic later this year and I will be sure to post an update on this forum. If you just can't wait, email me directly and I'll share the gory details.
We see there are EAc1 points associated with reducing energy consumption as compared to historical building energy usage data for Case 2 projects that can't earn the Energy Star label, but it's unclear what the threshold is for these projects to earn EAp2. Is it just ANY percentage reduction over the past 3 years, or is there a minimum performance threshold? The reference guide is ambiguous.
Hi Kim!! It depends which option of Case 2 you want to go with. Have you benchmarked using the EA Prerequisite 2 / Credit 1 Case 2 Calculator yet? This should give you the answer you are looking for and even other options depending on the path you choose and more importantly the path that will benefit you the most in terms of points
We had to use the Case 2 calculator because our building was too small to qualify for an Energy Star rating. Can anyone tell me why using the LEED Case 2 calculator yields us 33 percentile points above the national average (good for 12 EAc1 points) when our statement of energy performance from Energy Star for the same usage period shows our comparison Source EUI performance as -40% (40% better than the National Median Source EUI)?
To look at it from another perspective, consider if our building had been 4,999 square feet. We would still not be able to use the Energy Star rating system because we were under 5,000 square feet. Yet if we added only 1 square foot and changed nothing else, we would suddenly qualify for 3 additional points under EAc1. Yet we did not become more energy efficient, we only became a tiny (insignificant) bit larger. That does not seem fair to me. The Case 2 calculator should yield the same number of points as the Energy Star rating system when every other building operational and performance parameter remains the same.
My point remains this: Use of the Case 2 calculator versus the Energy Star rating system clearly can result in significantly different EAc1 points when everything else is held constant. In my opinion, that is not fair.
Any comments on this?
Couldn't agree more Peter! USGBC and EnergyStar do not see eye to eye on this credit/prerequisite and this is just ONE of the reasons why. Although the offline calculator is based on the data that Energy Star provides it still does not compare exactly. Unfortunately, there is nothing you can do about the size of your building or the way that its benchmarked. The best thing to do is stick with the scenarios that gives you a better assessment and be sure to "have your ducks in a row" in case you get feedback from the reviewer.
Is EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. limited to certifying the WHOLE building? What LEED option is available for a small 3500 sf office leased from a Building Owner within a 15,000 sf building if there aren't going to be any renovations or upgrades?
Yes, I'm afraid EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. is only for whole buildings or groups of buildings. It intentionally excludes parts of buildings, including individual tenant spaces. At this time existing tenant spaces have no option to certify in LEED on their own.
Hi Michelle, of course you have the LEED for Commercial Interiors (LEED CI) route. You might want to do a feasibility analysis on it and see how the space does. Depending on the conditions and efficiency of the space it may not be too bad.
Jeff, to use CI, the tenant must be renovating at least 60% of floor area to be certified. If there is no renovation, as Michelle indicated, CI isn't an option.
Michelle, there currently isn't an existing-buildings certification option for individual tenants, aside from convincing a building owner to do EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems.. (Our own office is in a similar situation: the two floors of our office are CI Gold and Platinum, and we would like to be in an EBOM-certified office, but the building owner isn't interested.)
At the risk of sounding like a traitor, BREEAMBuilding Research Establishment Environmental Assessment Method, the first widely used green building rating system, developed in the U.K. in the early 1990s, currently used primarily in the U.K. and in Hong Kong. In-Use (part 3) does allow for the certification of individual tenant spaces.
Overall, I'm not a big fan of BREEAM In-Use because I don't feel its three part format creates the same impact as EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems.. That said, it is actually much easier (and cheaper) to achieve a BREEAM In-Use rating because it has one rating for the building, one for the building management and a third for the tenant.
That said, the part 3 rating probably requires a tenant to act more sustainably than EBOM does. It is a good add-on to a CI rating.
This link gives a good overview of the rating system: http://www.breeam.org/filelibrary/BREEAM%20In%20Use/BES_5058_Issue_1_2_B...
"In life you usually get what you pay for", but for sophisticated users BREEAMBuilding Research Establishment Environmental Assessment Method, the first widely used green building rating system, developed in the U.K. in the early 1990s, currently used primarily in the U.K. and in Hong Kong. In Use does provide a benchmark pretty quickly where a property stands. Then you've got a lot of work to do (with no real support or examples from BREEAM on what you should do) to become more sustainable. The link posted didn't work for me, this one might work better - http://www.breeam.org/page.jsp?id=295
We are working on three similar buildings in Serbia. Energy consumption of all three buildings is being uploading to the Energy Star Portfolio manager. Thing is that one building achieved score of 64 which is almost 10 points less than other two. Reason is, that this building has a quite extensive roofed atrium inside and therefore office sqft/kWhA kilowatt-hour is a unit of work or energy, measured as 1 kilowatt (1,000 watts) of power expended for 1 hour. One kWh is equivalent to 3,412 Btu. ratio is lower than in an average office building without an atrium inside.
Has anybody an idea how to deal with it?
Thank you in advance!
One option is to separate out the roofed atrium space, and its associated floor area, in the building description within ENERGY STAR and assign it a different type of space usage.
Just to make sure we are on the right track, the "USGBC's alternative energy performance calculator for non-ratable buildings" that Mike is talking about is the "EAc1 EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. 2009 Case 2 Calculator V1.xls" found in the credit resources in LEED Online? I haven't been able to find a document called "USGBC's alternative energy performance calculator for non-ratable buildings" and I would like to make sure I have all the documentation.
If anyone can confirm my suspicion or direct me to the appropriate document it would be much appreciated.
My client operates a prosthetics manufacturing plant. There is no benchmark in ENERGY STAR for this kind of facility. I know it will not be eligible for an ENERGY STAR rating. I need to take the EUI path, but am not sure which building type to use.
I think the closest ENERGY STAR comes to addressing this facility type is with the Manufacturing Plant Energy Performance Tool for Pharmaceutical Plants, but that is a stretch. I could enter the plant as an "other" space type in Portfolio Manager and get the EUI there, but I am afraid that will not do it justice. Any recommendations?
If you're pursuing EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. for this building then I recommend you use the USGBC's alternative energy performance calculator for non-ratable buildings, available from the USGBC site and within LEED Online.
Within that tool you can benchmark relative to one of three alternatives: 1) the generic "other" category within Portfolio Manager as you described, 2) your own facility's energy history, or 3) energy use of comparable facilities. Each of these options has their pros & cons, so each should be explored and you should choose the method best suited to your project.
Correct me if I'm reading the reference guide incorrectly, but it's misleading for Case 2 "Option A, B, C" - the EAp2 Case 2 calculator from LEED Online appears to box projects into either Option A, B, or C depending on the space types - if your project can comply with Option A (alternative benchmark score) then you cannot CHOOSE to use Option 2C. Is this correct?
Kim, in my experience, I have heard projects take various routes for the same space type in question. However, the interpretation from the calculator will give you the 53 options of spaces and if 90% of the building does not meet one option than Option 1 cannot be taken.
I am not sure how to approach a recent discovery. We had 12 months of metered energy data (electricity and gas) for our LEED EBOMEBOM is an acronym for Existing Buildings: Operations & Maintenance, one of the LEED 2009 rating systems. registered office building, but we were way off the minimum efficiency performance for EAp2. Then, I found out that the office building's electricity meter - this building is located on a college campus- was erroneously including six streetlights (400W lamps each) located on a neighboring street that IS NOT a part of the project site. These lights automatically turn on at dusk 365 days of the year and were responsible for 50% of each months electricity use (by my estimates on average night time hours at this latitude)! Taking away the electricity consumed by the streetlights, the office building meets the pre-requisite plus earns EA points. My question is do I now have to wait an additional 12 months, after the college either installs a deduct meter on the streetlight breaker or separates them completely from my office building? It seems reasonable to me, since there is 3rd party data on the average night-time hours per month for the past year, that I could calculate the electricity consumed by the streetlights and subtract that from our monthly electric bills. Any opinions on an appropriate path forward?
Principal, LEED Consulting
The Cadmus Group, Inc.
Commissioning or auditing can improve identify a range of energy-saving measures.
Implementing energy-saving measures a directly helps achieve the desired Energy Star rating.
Ongoing commissioning can lead to added energy savings over the long term, improving the Energy Star rating further.
Use of a BAS can inform operational changes contributing to energy goals.
Accurate energy-use data supports assessment and implementation of energy-efficiency measures.
If increasing ventilation levels, consider the likely increased energy consumption.
Efforts to improve energy efficiency can affect occupant comfort, in good and bad ways. Monitor comfort along with any energy efficiency measures.
Use the Energy Star Portfolio Manager statement of energy performance to help achieve EAc6.
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