In SREC states, the Renewable Portfolio Standard (RPS) requires electricity suppliers to secure a portion of their electricity from solar generators. The SREC program provides a means for Solar Renewable Energy Certificates (SRECs) to be created for every megawatt-hour of solar electricity created.Some states will certify solar electric systems from out-of-state and allow the SRECs from those facilities to count towards the RPS. The map above shows what state individuals can sell their SRECs into.

The SREC is sold separately from the electricity and represents the "solar" aspect of the electricity that was produced. The value of an SREC is determined by the market subject to supply and demand constraints. SRECs can be sold to electricity suppliers needing to meet their solar RPS requirement. The market is typically capped by a fine or solar alternative compliance payment (SACP) paid by any electricity suppliers for every SREC they fall short of the requirement. The sale of SRECs is intended to promote the growth of distributed solar by shortening the time it takes to earn a return on the investment.Once the installation of a solar system is complete, the system must then be certified by the state(s) in which it is eligible to sell SRECs and then must create an account with the tracking platform used by that state. Once registered, every month, the tracking platform will issue SRECs based on the generation of your system. In some states, estimated generation is used for systems under 10kW, while all other systems are required to submit generation on a monthly basis. One SREC is created for every 1000kWh of electricity created. For example, a 10kW system can generate approximately 1 SREC per month. However, it is up to the solar installation owner to decide how to manage the SRECs that are produced.