Oklahoma Solar 30% 8th Best 2nd Worst Oklahoma is ranked 8th out of the 50 states¹ for average sunlight hours making it a great state for solar energy A 30% federal tax credit² is available for purchased home solar systems Oklahoma is ranked 2nd out of the 50 states for most hours without power³. This poor reliability makes solar power a great choice for energy security Have Us Calculate Your Total Incentives In Oklahoma Previous Next ¹ Oklahoma Sunlight Hours & Renewable Energy Information² IRS Energy Incentives for Individuals³ Based on data from U.S. Energy Information Administration (EIA) 2020