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Easy to research
Pick up the phone, call the local utility and a couple of green power providers—companies that sell renewable energy credits (RECs), which provide funding to renewable energy generation, supporting its development. Give them your project’s estimated energy consumption. Sit back and receive estimates.
That’s all it takes to find out what a purchase of offsite renewable energy will cost, so be sure to consider it—you might be pleasantly surprised. The credit requires you to offset only 35% of your electricity consumption with RECs to earn two points. You can make a stronger environmental statement and earn an extra exemplary performanceIn LEED, certain credits have established thresholds beyond basic credit achievement. Meeting these thresholds can earn additional points through Innovation in Design (ID) or Innovation in Operations (IO) points. As a general rule of thumb, ID credits for exemplary performance are awarded for doubling the credit requirements and/or achieving the next incremental percentage threshold. However, this rule varies on a case by case basis, so check the credit requirements. point through IDc1 by doubling the requirements.
Why green power?
Some building owners may hesitate to pursue this credit because they don’t believe that the extra cost brings a direct, tangible benefit to their building.
RECs must be Green-e certified or the equivalent. Center for Resource SolutionsHowever, nonrenewable electricity production is a huge contributor to pollution and global climate change1. Climate change refers to any significant change in measures of climate (such as temperature, precipitation, or wind) lasting for an extended period (decades or longer). (U.S. Environmental Protection Agency, 2008) 2.The increase in global average temperatures being caused by a buildup of CO2 and other greenhouse gases in the atmosphere. This temperature change is leading to changes in circulation patterns in the air and in the oceans, which are affecting climates differently in different places. Among the predicted effects are a significant cooling in Western Europe due to changes in the jet stream, and rising sea levels due to the melting of polar ice and glaciers., and buying green power creates incentives for further development of renewable energy facilities. The benefits of renewable energy are well-understood by the general public, and so buying green power can help you advertise your commitment to environmental responsibility. Many projects display their renewable energy certificates prominently.
Making it cost-effective
Many projects see this credit as low-hanging fruit, and may pursue it depending on how many points they need to achieve their LEED goals. Because the credit focuses exclusively on electricity (not natural gas, propane, or fuel oil) it is usually very affordable.
Purchasing green power through your utility
Many utilities offer a green power option for their customers, typically from renewable sources within your region. Instead of buying RECs from a third party, you can quickly get set up to buy the RECs based on a premium charge per kilowatt-hour that you consume.
What are RECs?
The market for renewable energy credits (RECs) has exploded in recent years, but RECs are still an abstract entity that can be difficult to define.
For buildings that can’t generate onsite renewable power or purchase it through a regional utility, but still want to promote renewable energy, RECs (sometimes called “green tags” or “tradable renewable certificates”) allow customers to continue to buy the same grid-supplied power, while also buying the environmental attributes of electricity produced by a renewable source. (The actual renewably generated electricity is sold separately to the grid for market price as normal power, while your REC purchase helps deliver extra revenue that helps make renewable energy production financially feasible.) To ensure quality, LEED requires you to purchase RECs certified by Green-e, a third-party program, or an equivalent certification program.
You can buy RECs from specific regions of the country, and even from specific renewable energy projects, or project types (like wind or solar). Buying RECs from a specific source can increase the cost a bit, but also helps bring this intangible commodity down to earth.
The Bear Creek Wind Farm in Bear Creek, Pennsylvania, with 12 Garnesa 2.0 MW turbines, was developed in 2005 by Community Energy, which sells renewable energy credits (RECs) from the project. Photo – Community Energy, Inc.Criticisms of RECs
RECs, along with carbon offsets, which are similar, have come under criticism. This is largely due to the perception that they allow a person or a business to go on with business as usual, consuming as much fossil fuel as usual, and then simply write a check to assuage their guilt, without producing tangible environmental benefit.
There is validity to these concerns, which are best countered by conserving energy through high-performance building design and location (earning other EA and SS points in LEED), generating renewable energy onsite if possible, and then buying RECs only as a last step. Focusing on energy conservation first has the side benefit of making the ultimate purchase of RECs more affordable, because you have less consumption to offset.
Legend
- Best Practices
- Gotcha
- Action Steps
- Cost Tip
Pre-Design
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Discuss with your team the possibility of purchasing green power.
You have three options for earning this credit. The best and most cost-effective option for your project will depend on your location and the offerings of the local utility.
- Purchase green power through the existing power provider. You need to verify that it is a Green-e certified provider or the equivalent.
- If your state has an open electricity market, you can find—and directly purchase from—a provider that offers Green-e accredited power.
- Purchase Green-e certified renewable energy certificates (RECs).
Most projects find it easiest to go with the third option, and shop around for the best deal on RECs. Others, however, have found it best to purchase through their local utility when they can get a better bundle deal and feel like the purchase is more tangible, so do some research.

This is one LEED credit that you can do at the last minute. However, if you are renting or selling space in your building, you may want to use the purchase of green power as a marketing tool and will not want to wait until the last minute to make the purchase.
Many projects see this credit as one for which you pay but don’t receive a tangible benefit. However, nonrenewable electricity production is a huge contributor to pollution and global climate change, and buying green power supports the development of renewable energy facilities.
The amount of green power that you need to purchase for the credit is based on the quantity of electricity consumed, not the cost of the electricity. If your project is pursuing EAc1: Optimize Energy Performance through energy modeling, your focus is on reduction in cost, not quantity, so note the difference when doing calculations for this credit. For guidance on the calculations, see the LEEDuser strategy on step-by-step green power calculations.
If the owner is a corporation or a school district with a portfolio of multiple buildings, consider purchasing green power through a bulk agreement and allocating it to different projects. You will need to avoid “double-dipping,” where more than one project or tenant space uses the same green power allotment.
If your green power provider does not supply Green-e accredited energy, it must have an equivalent accreditation. To qualify as an equivalent accreditation, a program must meet the requirements for renewable resources as detailed by Green-e, and the supplier must have undergone an annual third-party verification process equivalent to the Green-e process. You might want to take this route if your utility provider can provide the best rate.
You can choose to purchase two years’ worth of green power at occupancy, rather than pay monthly or yearly. In this case, you would purchase double the percentage of assumed annual electricity consumption to satisfy the credit’s two-year commitment. For example, a LEED-NC or Schools project would purchase 70% (or more) of the assumed annual electricity consumption.
Projects pursuing this credit with a district energy system should refer to the USGBC’s District Thermal Energy Treatment document for specific considerations.
Some universities and large companies have already decided to purchase green power and therefore your project may not have to pay for it directly. Consult with the owner to see if this is already happening and you can use previously allocated funds rather than project funds. You will need to make sure there is no “double-dipping”.
The lower your building’s energy use, the less you pay for this credit (because you have less electrical power use to offset). Explore cost-effective ways of reducing electrical energy consumption in order to reduce the cost of green power.
Schematic Design
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Calculate a rough estimate of the cost for purchasing green power based on the default numbers found in the LEED Reference Guide or through DOE’s Commercial Buildings Energy Consumption Survey database (see the table at right). See the LEEDuser strategy on step-by-step green power calculations and follow the steps for default electricity consumption calculations.Green power prices can fluctuate like other utility prices. If you think prices may rise by the time the project is completed, lock in a low price by signing a contract anytime prior to occupancy.
Running estimated calculations early in the design stage will help to give you a better understanding of how much the credit might cost. Just keep in mind that the cost may change once the energy usage is further defined as part of your calculations for EAp2 and EAc1: Optimize Energy Performance. If you are using an energy model per Option 1 of EAc1, the cost of RECs might change if alterations to the energy model are required after the LEED design review, but the change should be minimal.
Especially if your project is very energy efficient, you will probably be able to pay less for green power based on your energy model than you would using the default values from CBECS.
Design Development
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Continue to seek strategies that lower the building’s electrical energy use in order to subsequently reduce the cost of green power.
Call several green power providers to get a preliminary estimate of the cost to buy green power for 35% of the assumed, actual or default electricity consumption. While you’re at it, also get an estimate for buying double the green power and earning a point for exemplary performance. Find green power providers on EPA’s Green Power Partnership website or the Green-e website. See the Resources section for links to their websites.
Green power is a competitive market with price variation. Obtain more than one estimate to find less-expensive options.
Some projects choose to attempt this credit at the last minute and keep it as a “back-pocket” credit. For example, you may decide to go for this credit only if it helps you reach another level of LEED certification. A contract can be arranged at the last minute, and can even be submitted after the first construction review.
This credit requires only a few minutes to make phone calls, provide the size of the project and energy consumption, and get estimates. It is well worth the time and effort to determine the likely cost.
Construction Documents
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Determine electricity use based on one of the following options:
- The energy model complete for EAc1: Optimize Energy Performance, Option 1;
- or, based on DOE’s CBECS database default values.
Construction
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If you are using energy modeling, get a final estimate of the cost based on final model outputs. Remember that this credit is based on the quantity of electricity consumption (usually in kWh), not cost.
Sign a contract with the chosen green power provider.
Submit documentation to LEED Online. This will include filling out the LEED Online Submittal Template, which requires a number of inputs on total electrical consumption (or default values) and details on the green power purchased. You will also need to upload a proof of purchase for two years of green power—see the Documentation Toolkit for an example.
Operations & Maintenance
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If you do not purchase two years of green power at occupancy, you will need to continue to pay monthly or yearly for two years.
After two years, consider continuing to pay for green power. Doing so can help projects that are pursuing LEED-EBOM certification via EAc4.
USGBC
Excerpted from LEED for New Construction and Major Renovations Version 2.2
COPYRIGHT © 2005 BY THE U.S. GREEN BUILDING COUNCIL, INC. ALL RIGHTS RESERVEDEA Credit 6: Green power
1 Point
Intent
Encourage the development and use of grid-source, renewable energy technologies on a net zero pollution basis.
Requirements
Provide at least 35% of the building’s electricity from renewable sources by engaging in at least a two-year renewable energy contract. Renewable sources are as defined by the Center for Resource Solutions (CRS) Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. products certification requirements.
Determine the baseline electricity use
Use the annual electricity consumption from the results of EA credit 1.
OR
Use the Department of Energy (DOE) Commercial Buildings Energy Consumption Survey (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.) database to determine the estimated electricity use
Potential Technologies & Strategies
Determine the energy needs of the building and investigate opportunities to engage in a green power contract. Green power is derived from solar, wind, geothermal, biomass or low-impact hydro sources. Visit www.green-e.org for details about the Green-e program. The power product purchased to comply with credit requirements need not be Green-e certified. Other sources of green power are eligible if they satisfy the Green-e program’s technical requirements. Renewable energy certificates (RECs), tradable renewable certificates (TRCs), green tags and other forms of green power that comply with Green-e’s technical requirements can be used to document compliance with EA Credit 6 requirements.
Web Tools
Commercial Buildings Energy Consumption Survey
Use this website to determine the default energy consumption rates by building type.
U.S. Department of Energy – Green Power Network
This website provides information on pricing, marketing, and purchasing green power, as well as news and information.
Organizations
EPAs Green Power Partnership
EPA’s Green Power Partnership provides assistance and recognition to organizations that demonstrate environmental leadership by choosing green power. It includes a buyer’s guide with lists of green power providers in each state.
Green-e
Search for green power or carbon offsetA fiscal unit measured in metric tons of carbon dioxide-equivalent (CO2e) representing six main categories of greenhouse gases. Aimed at reducing greenhouse gas emissions, one carbon offset represents the reduction of one metric ton of carbon dioxide (or its equivalent in other greenhouse gases). Carbon offsets are typically purchased by consumers of fossil fuels or products using fossil fuels, as a way to "offset" or negate their negative environmental impact. providers by location. Understand Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. standards to demonstrate equivalency.
Low Impact Hydropower Institute
The Low Impact Hydropower Institute is a non-profit organization and certification body that establishes criteria against which to judge the environmental impacts of hydropower projects in the United States.
Technical Guides
Treatment of District or Campus Thermal Energy in LEED V2 and LEED 2009 – Design & Construction
This document is USGBC’s second (v2.0) major release of guidance for district or campus thermal energy in LEED, and is a unified set of guidance comprising the following an update to the original Version 1.0 guidance released May 2008 for LEED v2.x and the initial release of formal guidance for LEED v2009.
Renewable Energy Certificate (REC) Pricing
RECA Renewable Energy Certificate (REC) is a certificate representing proof that a given unit of electricity was generated from a renewable energy source such as solar or wind. These certificates are able to be sold, traded, or bartered as environmental commodities, where an electricity consumer can buy the renewable energy attributes of electricty to support renewable energy, even if they are consuming generic grid-supplied electricity that may be supplied by nonrenewable sources. vendors often offer different REC products and pricing based on the type of renewable energy generation (such as solar or wind) and the geographical location of the generation, as shown in this sample pricing table prepared for a LEED-NC project.
Samples
Green Power Contract
You will need to execute a contract like this sample to purchase renewable energy credits (RECs), and then upload it to LEED Online to verify credit compliance.
Samples
LEED Online Sample Template – EAc6
This template is the flattened, public version of the dynamic template for this credit that is used within LEED-Online v2 by registered project teams. This and other public versions of LEED credit templates come from the USGBC website, and are posted on LEEDuser with USGBC's permission. You'll need to fill out the live version of this template on LEED Online to document this credit.
Construction Submittal
Documentation for this credit is part of the Construction Phase submittal.


49 Comments
RECs for LEED in foreign countries
I have a client seeking to purchase RECs for a few projects in Russia.
They are seeking LEED. Can they purchase US Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. RECS and still comply with LEED regardless of project location?
Yes International projects can purchase US-based RECs to demonstrate compliance with the credit requirements.
International Project Eligible?
I didn't see this in the discussion. Would a project outside the US, in South America, qualify for this credit? Additionally, a wind farm is being constructed on the Island and should be done with a year of the completion of this project. Does this count or is it strictly attainable with RECA Renewable Energy Certificate (REC) is a certificate representing proof that a given unit of electricity was generated from a renewable energy source such as solar or wind. These certificates are able to be sold, traded, or bartered as environmental commodities, where an electricity consumer can buy the renewable energy attributes of electricty to support renewable energy, even if they are consuming generic grid-supplied electricity that may be supplied by nonrenewable sources. purchases? Thank you for your assistance.
Alan, any project worldwide can purchase qualifying Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. certified RECs. Most often you would need to purchase these from U.S. companies. A wind project in your local area could qualify but only if they are selling Green-e certified or equivalent RECs.
Non-Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. certified products need to demonstrate equivalency with the requirements of the Green-e Energy Standard. This has proven difficult for many international projects so if you follow this path make sure you read the standard and write a narrative describing how the local green power meets each of the major provisions of the standard.
NC v2.1 EAc6 Carbon Offsets
If our PVs cover 100% of the building electrical use, can we buy carbon offsets to cover the gas usage and apply this to EAc6?
100% would be worth and ID credit. You could possibly earn another ID credit for the carbon offsets depending upon quantity.
Thank you Marcus. Just so I'm clear, carbon offsets cannot be used for EAc6.
You perhaps could use carbon offsets for EAc6 for the electricity use of the building. You would need to demonstrate that the offsets were equivalent to the requirements of the Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. standard. You cannot use offsets for the gas consumption of the facility and have them count toward EAc6.
For this credit you need to buy RECs to offset your total electricity use for the year (for a two year period). If you net zero electricity use for the year. Then you could buy 0 REC for 0$/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./year and offset 100% of your energy use. Free points?
It depends on the on-site renewables you use to net zero the project. If it is all PV, for example, as long as the project retains the RECs and the system is grid-connected (say through net metering) then they could be applied to EAc6. If they have been sold then they must be replaced to earn EAc6.
So yes potentially free point(s).
Power Purchase Agreement and RECs
Would it be possible to engage in a PPA with a third party and purchase RECs from this PPA? Is that not the definition of the PPA? We are attempting a net zero campus building and LEED Platinum. However, the school does not have enough money to pay for their own solar. We thought the PPA could help us get to net zero by purchasing all of our power as RECs from the on-site, third-pary owned solar array.
John, I think the issue here is that to comply with the EAc6 requirement for RECs to be Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. certified or the equivalent. I assume the RECs here are not certified, and I think it's rare for LEED project teams to pursue that in a case like this.
I am not sure if this would translate for NC-v2.2, but if this were an NC-2009 project there is a possibility you could qualify under EAc2. See the Nov. 2011 LEED addenda on EAc2.
A Power Purchase Agreement may or may not include the RECs, it depends on the individual agreement.
If you own the RECs from this system you may be able to demonstrate equivalency with the requirements in the Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. Standard and earn this credit. This path is implicit in the credit language.
If you own the RECs and the power you may be able to earn both EAc2 and EAc6 plus get all the points for EAc1 as a net zero project. I would need to know more to be sure but I think it is possible.
@Marcus and Tristan - Sounds like the catch would depend on two things (yet undetermined as we are in DD/CD phase) 1. Will power purchase agreement contract allow the school to purchase Renewable Energy Credits from the on-site solar arrays? 2. Will the third party go the extent to Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. certify their RECs?
Perhaps the best route is to put out a request for proposals including language that would help us come up with a PPA that could contribute to EAc2 and EAc6 and help us to achive net zero thus contributing to EAc1.
Thanks!
Off-Grid Building
We are working on a classroom that is entirely off of the electrical grid. I know that we are not technically using any power from traditional power plants, but if we purchased RECs for the amount of (self-generated) energy that we are using each year could we get this credit?
Yes you can. The source of the RECs (i.e. grid connected) is what matters not whether you access them through the grid.
Application for anew credit after gbci's final review possible?
Hi,
I was wondering whether it is possible to apply for a new credit after gbci's final comments for construction submission have been received.
Our goal is platinum, but we haven't received enough points according to the final review, so we only have achieved gold . Therefore, we are looking forward to pursue Green Power credit additionally at this later stage.
Does anyone know whether this wouldbe possible?
I know that this was possible in the past without an additional fee. However, I am not sure of GBCI's current policy. Worst case I would imagine is that you would have to pay for an appeal.
Hi Marcus
I have a similar question: is it possible to submit part of the construction credits since documentation is complete for some? And can the remaining of the construction credits be submitted at a later stage? In another word is it possible to submit construction credits in 2 stages? And if so is there any risks in doing so?
Thanks
Geraldine
Geraldine
You are only allowed to submit twice in a split submission. Usually the design credits are submitted and then the construction credits. If you already went through a design review you will need to submit all of the remaining credits together in one construction submission.
EA6 NC2.2
The Innovation in Design Credit Catalog there is 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 stating that offsets can be used for an EA credit. The requirement is to engage in a 2 year contract to purchase carbon offsets for natural gas use, fuel oil or on-site coal burning systems. Does the offset need to be from a renewable energy project? Or can a HFC destruction offset be used?Does this credit fall under EA6 or Innovation and Design for EA?
It would be for an ID credit.
The 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 seems to indicate that the offset must be a Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. certified offset. Those offsets appear to be primarily for renewable energy projects. It also indicates that the quantity of the offset must be equal to or greater than the green power purchase required of the project to earn EAc6.
Other offsets may qualify but you would need to demonstrate equivalency with the applicable Green-e standard.
Vintage REC's?
Is anyone familiar with vintage RECA Renewable Energy Certificate (REC) is a certificate representing proof that a given unit of electricity was generated from a renewable energy source such as solar or wind. These certificates are able to be sold, traded, or bartered as environmental commodities, where an electricity consumer can buy the renewable energy attributes of electricty to support renewable energy, even if they are consuming generic grid-supplied electricity that may be supplied by nonrenewable sources.'s? We called a green power provider and they told us that RECs based on power generated in 2009 is cheaper than REC's based on power generated this year. Is there anything in LEED that prevents project from buying vintage REC's?
The exerpt below is from the Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. Standard.
B. Vintage of Eligible Renewables
A Green-e Energy Certified product may include only renewables that are generated in the calendar year in which the product is sold, the first three months of the following calendar year, or the last six months of the prior calendar year.
If the RECs meet that criteria, and all the rest of the Standard, then they qualify for LEED. If not then they don't.
As Marcus mentioned, all RECs have an associated Vintage Year depending on when the renewable energy was generated. While LEED does not require that the Vintage Years of the RECs match the time period being offset. For example, you could purchase two years' worth of 2011 Vintage RECs to green your electricity from 1/1/2012 - 12/31/2013.
However, matching the Vintage Year to the period being offset is required for participation in programs such as the EPA Green Power Partnership, and many of 3Degrees' partners have selected this option as a best practice.
Feel free to shoot me an email if you'd like to learn more about the different options - mloving@3degreesinc.com.
LEED for Schools 2007
Can a LEED for Schools 2007 project go after exemplary performanceIn LEED, certain credits have established thresholds beyond basic credit achievement. Meeting these thresholds can earn additional points through Innovation in Design (ID) or Innovation in Operations (IO) points. As a general rule of thumb, ID credits for exemplary performance are awarded for doubling the credit requirements and/or achieving the next incremental percentage threshold. However, this rule varies on a case by case basis, so check the credit requirements. for EAc6? It states in the reference guide that it in unavailable. Is this a mistake?
This was an error which was clarified by 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 later. Here is the line-by-line text you can use in the ID credit Template, with minimal adaptation for your project:
ID Credit Title:
Exemplary PerformanceIn LEED, certain credits have established thresholds beyond basic credit achievement. Meeting these thresholds can earn additional points through Innovation in Design (ID) or Innovation in Operations (IO) points. As a general rule of thumb, ID credits for exemplary performance are awarded for doubling the credit requirements and/or achieving the next incremental percentage threshold. However, this rule varies on a case by case basis, so check the credit requirements.: EA credit 6 (70%)
Narrative Statement of Credit Intent:
Encourage the development and use of grid-source, renewable energy technologies on a zero net pollution basis.
Narrative Statement describing Credit Requirements:
Provide at least 70% of the building's electricity (based on calculated or default consumption) from renewable sources by engaging in a two-year contract to purchase power generated from renewables sources that meet Center for Resource Solution s (CRS) Green-EGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. products certification requirements. This is a doubling of the EA credit 6 Green Power requirements and is based on the errata issued 6/29/06 that states: Exemplary performance can be achieved by doubling the requirements, either by the amount of electricity or the length of the contract.
Narrative Describing Project's Approach to the credit:
The owner has chosen to offset 70% of the electricity-use of this building over two years with Green-E RECs in order to achieve an innovation point for exemplary performance in this category (based on the errata dated June 29, 2006). The electricity use was estimated by using the energy model provided by the engineer.
Sorry, that should read "corrected by the Errata", rather than "by 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". This should apply to Schools, but it is worth checking the Schools 2007 Errata on the USGBC website here: http://www.usgbc.org/DisplayPage.aspx?CMSPageID=1586
Purchasing Direct vs. RECs
If it's possible to buy green power directly from a plant which also sells REC's, aren't they selling the "green" twice? What am I missing here?
It's not possible to sell RECs twice for same unit of power generated, so you shouldn't see a power plant doing this.
Some utilities sell RECs, which is the same as saying that some utilities sell green power.
Not sure if I'm answering your question—what are you referring to?
"It's not possible to sell RECs twice for same unit of power generated, so you shouldn't see a power plant doing this"
I believe that answers it. Thanks.
Project A buys green power directly from a plant, since they are within the district.
Project B buys RECs from the plant, since they are not.
Both projects apply their "green power" to their LEED submittal. My question was that it appears that the power used to obtain two seperate LEED points could in fact be the same power. There is no way to know.
Yes, there IS a way to know. Green power used for LEED compliance must be Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. certifed. Green-e contains checks to prevent such double-counting.
If the power plant is selling RECs for the same unit of electricity twice, they're also committing fraud.
I believe I understand:
the Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. program is a mechanism tracking the assignment of green power (RECA Renewable Energy Certificate (REC) is a certificate representing proof that a given unit of electricity was generated from a renewable energy source such as solar or wind. These certificates are able to be sold, traded, or bartered as environmental commodities, where an electricity consumer can buy the renewable energy attributes of electricty to support renewable energy, even if they are consuming generic grid-supplied electricity that may be supplied by nonrenewable sources. and non-REC) produced by a plant and ensuring that they dont overlap.
In my scenerio above, the power Project A buys would not be available as REC purchase for Project B.
Right.
Also, utilities in the U.S. are required to produce a certain percentage of their power (like 5%) from renewable sources. This is called portfolio renewables, or something like that. "Green power" like this that is already legally mandated to be produced cannot be used for Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. certified RECs. The idea is that the Green-e RECs represent green power going above and beyond the norm—it's not "business as usual."
PV Array Excluded From Electrical Usage?
In EA c1, Table 1.8.2b, can I subtract the Photovoltaic Array 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. value from the total Electricity Energy Use to calculate the necessary RECA Renewable Energy Certificate (REC) is a certificate representing proof that a given unit of electricity was generated from a renewable energy source such as solar or wind. These certificates are able to be sold, traded, or bartered as environmental commodities, where an electricity consumer can buy the renewable energy attributes of electricty to support renewable energy, even if they are consuming generic grid-supplied electricity that may be supplied by nonrenewable sources. purchase? This would make sense to me, but I can't find it documented anywhere.
Thanks!
PS, I am asking specifically regarding an NC 2.2 project; it seems like they've clarified it for v3.
Yes you can. The annual electricity consumption for the facility is less because of the PV array. The final result for EAc1 includes the PV array, so while it is not explicitly stated in the Reference Guide or via 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, the EAc6 purchasing requirement is based on that final result.
RECs - Timing of Purchase
While this is a great credit to hold until the last minute, we want to take advantage of the current prices before they rise. Is there any requirements of when the 1 yr 70-% contract or 2yr/35% contract is executed?
For this credit in particular, your project would need to offset 35% of the annual electricity usage for 2 years (1 LEED credit), or 70% of the annual electricity usage for 2 years (1 LEED Credit + 1 ID credit). Typically both years are purchased up front. Please contact me if you'd like to have a discussion about your project in question.
Thanks!
We aren't yet completed with construction documents, can we purchase the RECs now for a 2 year period beginning now? IE: when can we begin the 2 year period, does it have to be post construction, or post CD's, or anytime after project registration with USGBC? Is there any requirement on the timing of the purchase?
I don't believe there is any specific start date - as long as it is within a reasonable time frame. Purchasing RECs during DD can contribute to off-setting the construction carbon release as well as the building's direct energy consumption. During either purchase time, the credit intent is still being met. That being said, I would be very interested to know if anyone has had any trouble with this credit.
RECs - Tier 1 or Tier 2
When purchasing RECs does it matter if they are tier 1 or tier 2?
Hi Matthew-
This is a tough question to answer, as different states have different definitions for what Tier 1 and Tier 2 are. Normally, tiers are used to designate green power for state Renewable Portfolio Standards, so it varies by state. Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. does not certify all Tiers, so most importantly, if the RECs you are purchasing are Green-e certified, they will be accepted by the USGBC. Let me know if this answers your question, or feel free to email me at lmalone@renewablechoice.com
Thanks Lana. We're checking with the RECA Renewable Energy Certificate (REC) is a certificate representing proof that a given unit of electricity was generated from a renewable energy source such as solar or wind. These certificates are able to be sold, traded, or bartered as environmental commodities, where an electricity consumer can buy the renewable energy attributes of electricty to support renewable energy, even if they are consuming generic grid-supplied electricity that may be supplied by nonrenewable sources. provider to ensure that we purchase the right ones.
The Golden Standard as certification?
Would a power purchase contract from a wind power plant certified by The Gold Standard (www.cdmgoldstandard.org - scheme for certifying carbon credits) be acceptable for this credit?
Hi Omer!
According to the LEED NC 2.2 Reference Guide, other sources of green power are eligible if they satisfy the Green-eGreen-e is a program established by the Center for Resource Solutions to both promote green electricity products and provide consumers with a rigorous and nationally recognized method to identify those products. program’s technical requirements.The Gold Standard is a high quality carbon credit label for both Kyoto and voluntary markets, and would most likely be accepted with proper documentation. Gold Standard RECs are typically much more expensive than Green-e RECs as well.
I hope this helps!
Omer,
You may be interested to learn that the USGBC has recently approved carbon offsets from a renewable energy project for this credit. http://www.greenbiz.com/news/2010/04/28/haworth-turns-offets-over-recs-e...
In line with the intent of EAc6, carbon offsets from renewable energy projects encourage the development and use of grid-source, renewable energy technologies on a net zero pollution basis. They also have the added benefit of ensuring a fully additional increase in renewable energy capacity on the grid as well as unambiguous ownership of greenhouse gas emissions reductions.
Yes, it is true that high quality carbon offsets certified to a robust international consensus based standard will likely cost more (especially in regions with high grid emissions factors) but there is a strong case to be made that they deliver significantly more tangible and documentable environmental benefit. I do think it is fair to correlate the current historical low prices for RECs to the actual benefit that is being delivered. This paper from a group of leading climate NGOs provides more background. http://www.offsetqualityinitiative.org/OQI%20REC%20Brief%20Web.pdf
If you need help with the GHG conversions or submittal language I would be happy to help.
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