What it is
A renewable energy certificate, or REC, is generally a tradable record that represents the environmental attributes of electricity generated from a renewable source. It is separate from the electricity itself. Other renewable energy certificates come from sources outside solar and wind, including hydro RECs, geothermal RECs and biomass energy credits.
These certificates are different from carbon credits, which usually represent a measured reduction or removal of greenhouse gases. Some people use the terms loosely, so it helps to ask exactly what a listing represents and how it is tracked.
Eligibility varies. Whether a hydro, geothermal or biomass facility qualifies depends on the program, the tracking system, the facility's age and design, and local rules. These details differ by region and change over time, so confirm them directly with the seller and the relevant tracking system.
How it’s traditionally been approached
Many owners of these projects have sold RECs alongside their power, bundled into a power purchase agreement or utility contract. Others have sold them separately, as unbundled certificates, to companies and organizations that want to support renewable electricity.
Buyers have often come through brokers, marketers, utilities or direct relationships. Some agreements are one-time sales, while others are multi-year offtake arrangements covering future output.
Sources outside solar and wind can bring extra questions. Hydropower may involve questions about facility type and environmental conditions. Biomass may involve questions about fuel source. Different buyers and programs treat these questions differently.
How the right buyer may help
The right independent buyer may help you understand how your certificates could be viewed in the market. A good buyer may explain which programs or buyer preferences your project type tends to fit, and where it may not.
A first conversation is usually informational. Expect questions about your facility, its location, its generation records and how the certificates are tracked and transferred. Have your documentation ready, and ask for any terms in writing.
Useful questions to ask include: Which tracking systems and programs do you work with? How do you treat hydro, geothermal or biomass? Who handles transfer and retirement? How are fees structured, and when are they disclosed? Nothing here guarantees a match or a sale.
The bigger picture
Deciding what to do with a project's certificates can bring both hope and stress. Revenue questions, paperwork and unfamiliar terms may weigh on you, especially if the project is central to your livelihood or your community. Taking time to learn the basics may bring some calm and confidence.
It can help to talk with trusted advisors, and to remember that no single approach is right for everyone. If financial pressure is affecting your wellbeing, Providers.plus may help you find supportive resources. Move at a pace that feels sustainable.
Keep in mind
- Carbon Credit Offtakers is an independent directory. It does not verify, issue, hold, guarantee or trade any certificate, credit or agreement.
- Confirm registry or tracking-system status, verification and any double-counting or corresponding-adjustment treatment directly with the seller and the registry before relying on any listing.
- Rules for RECs, carbon markets and climate disclosure vary by state and country and change over time. This page is not legal, financial, tax or investment advice.
- No buyer match, sale or specific fee is guaranteed. Review every term carefully and consider a qualified professional.
Buyers
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Frequently asked questions
What are other renewable energy certificates?
Other renewable energy certificates are RECs generated by renewable sources besides solar and wind, such as hydro, geothermal and biomass. Each one generally represents the environmental attributes of electricity produced, separate from the power itself. Eligibility depends on the program and region.
Can I sell hydro RECs?
Possibly, depending on your facility and the program or market involved. Eligibility rules for hydro vary by location and may change. Confirm requirements with the relevant tracking system and a qualified professional before listing.
Are geothermal RECs the same as carbon credits?
No, they are generally different. A geothermal REC represents attributes of renewable electricity generated, while a carbon credit usually represents a measured greenhouse gas reduction or removal. Ask any seller or buyer exactly what is being transferred.
How are biomass energy credits treated?
Treatment varies by program and region. Questions about fuel source and sustainability are often part of the review. Confirm how a given program views your project before relying on any listing.
How do I monetize a renewable energy project's credits?
Project owners have traditionally sold certificates bundled with power or separately through independent buyers, brokers or utilities. The right buyer may help explain options, but no sale or outcome is guaranteed. Compare terms and confirm everything independently.
What should I ask a buyer of other renewable energy certificates?
Ask which programs and tracking systems they use, how they treat your project type, how transfer and retirement work, and how fees are handled. Request terms in writing. Verify registry status directly with the registry.
Educational resource. Carbon Credit Offtakers shares general information and connects people with independent buyers. It is not professional advice. Talk with a qualified professional about your own situation.