Solar power in Delaware is a small industry. Delaware had 150 MW of total installed capacity in 2020. The largest solar farms in the state included the 10 MW Dover Sun Park and the 12 MW Milford Solar Farm.
The expansion of Bruce A. Henry Solar Farm near Georgetown in Sussex County from 23 to 40 acres was completed in 2020.
A 2012 study found that a typical 5 kW system would pay for itself in five years, and go on to provide a savings of $37,837 over the balance of its 25-year life. It is estimated that 19% of all electricity use in Delaware can be provided by rooftop solar panels. The state's renewable portfolio standard required 0.4% from solar in 2012, 0.6% in 2013, 3.5% from solar by 2025, and 25% from renewable sources.Renewables Portfolio Standard
Net metering is available for residential customers up to 25 kW, and others from 100 kW to 2 MW, depending on type of customer and the utility. Excess generation is credited at retail rate to next month's bill and optionally paid once a year at energy supply rate (normally referred to as "avoided cost").
Installed capacity
Delaware photovoltaic capacity (MWp)YearCapacityInstalled% change 2006 0.8 2007 1.2 0.4 50% 2008 1.8 0.6 50% 2009 3.2 1.4 78% 2010 5.6 2.4 75% 2011 26.5 20.9 373% 2012 46.1 19.6 74% 2013 54 7.9 17.1% 2014 61 7 13% 2015 70 10 16% 2016 97 18 26% 2017 117 20 20.6% 2018 131.9 14.9 12.7% 2019 142.1 10.2 7.7% 2020 150.1 8 5.6% 2021 163.2 13.1 % 2022 251 87.8 %
+ Utility-scale solar generation in Delaware (GWh) Year Total Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2011 7 0 0 0 0 0 0 1 1 2 1 1 1 2012 22 1 1 2 3 2 2 3 2 2 2 1 1 2013 46 2 3 4 3 5 5 4 4 5 5 3 3 2014 48 2 3 4 4 5 5 5 5 4 5 3 3 2015 48 2 2 4 4 6 6 6 5 4 3 2 4 2016 50 2 2 4 4 4 4 4 5 5 5 5 6 2017 50 3 4 4 5 5 5 5 5 4 4 3 3 2018 49 3 3 5 5 4 5 5 5 4 4 3 3 2019 53 3 3 5 5 6 5 5 5 5 4 4 3 2020 53 3 3 4 5 6 6 6 5 5 4 3 3 2021 57 3 3 5 6 6 6 7 5 6 4 4 3 2022 63 3 4 5 6 6 7 7 7 6 4 4 4 2023 156 6 9 14 16 20 17 18 17 12 12 9 6
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