Solar Renewable Energy Credit (SREC) markets are comprised almost entirely of solar photovoltaic generators. However, recent legal changes offer opportunities for solar thermal developers to participate in two of the country’s most lucrative programs.

As a background, a solar renewable energy credit is a tradable commodity like a carbon credit. However, unlike carbon credits, an SREC signifies the environmental attributes associated with 1 MWH of electricity, or its thermal equivalent, produced by a solar energy generator.

The value of an SREC is derived by a state’s Renewable Portfolio Standards (RPS). A RPS is a state-specific statute dictating that certain percentage electricity must come from renewable energy generators. Thirty-one states within the US have RPS statutes on the books. Of these thirty-one states, seven require a percentage of the renewable electricity production come from solar energy technologies (i.e. solar carve-out). These seven states also define a Solar Alternative Compliance Penalty (SACP), or the penalty a regulated utility or energy supplier must pay if they fail to acquire the dictated number of SRECs to meet the RPS. For example, energy suppliers in MD and DC must surrender $400.00 and $500.00, respectively, for each SREC they fail to acquire to meet the solar carve out defined within the RPS. The SACP functions as the price ceiling for an SREC market.

Currently, only a very small number of solar thermal generators participate in these SREC markets, because until recently solar thermal generators did not meet the definitional requirements of a solar energy generator within RPS statutes. However this is changing.

The SREC landscape for solar thermal generators is now open for system owners in MD and DC. Effective January 1, 2012, the Maryland RPS will allow solar thermal generators to earn SRECs. To earn SRECs in Maryland the following conditions must be met: (1) the system must be installed on or after June 1, 2011, (2) if the system is residentially owned, the facility must meet the Solar Rating & Certification Corporation’s (SRCC) OG-300 standards, (3) if the facility is commercially owned, the components installed must meet the SRCC’s OG-100 standards and an OIML certified meter must be installed to measure generation at the facility, and (4) the facility must be located within Maryland. To participate in the DC SREC market, (1) residentially owned systems must meet the SRCC OG-300 standards, (2) commercially owned systems must utilize components that meet the SRCC’s OG-100 standards and have an OIML meter installed to measure generation, and (3) pending new legislation, the facility must be located within the District.

In light of these recent legal changes, solar thermal developers can now participate in two lucrative SREC markets. In 2015 alone, the Maryland SREC market alone will have a ceiling value of over $100 million. Or, put another way, more than 195 MW-eq. of new compliance appetite is legislated in DC and MD over the next 3 years. To learn more about SREC options available to you, please visit As the country’s oldest and largest SREC aggregator, we can craft the solution that is right for you.