Solar Renewable Energy Certificate. SRECs are tradable credits that represent all the clean energy benefits of electricity generated from a solar system. Each time a solar system generates 1,000 kWhs (1MWh) of electricity, an SREC is issued which is sold or traded separately from the power. SREC aggregators are often consulted to maximize and monetize your SRECs on your behalf. Currently in Maryland, the SREC program is available for net metered solar systems through 2030!