Solar Panel Cost in Delaware (2026)

Net metering: Net metering to 25 kW residential, credited in kilowatt hours

All Delaware electric utilities offer net metering, and the rules work broadly the same way across Delmarva Power, Delaware Electric Cooperative and the municipal electric companies. Residential systems are eligible up to 25 kW, which is far above what an ordinary household would install, so the cap is rarely the binding constraint. The detail worth understanding is that credits are denominated in kilowatt hours rather than in dollars. That distinction is more valuable than it sounds. A dollar credit is fixed at the rate in force when it was earned, so it loses purchasing power if electricity prices rise. A kilowatt hour credit is a claim on a unit of electricity, so it holds its value against future rate increases automatically. In a state where retail rates have generally risen, that is a quiet but real advantage over the states that credit in currency. Delaware also runs a Solar Renewable Energy Credit programme through the Delaware Sustainable Energy Utility, using competitive procurement rather than an open trading market, which produces a separate income stream from the environmental attributes of your generation, reported at around $30 per SREC for the first ten years and $10 for years eleven to twenty-five, on roughly 1.35 SRECs per installed kW per year. Because net metering, the grant programme and the SREC arrangement are three separate things, ask for each to appear as its own line in a projection rather than being combined into a single savings figure.