The Oklahoma Corporation Commission reported that 18.42% (4,056 MW) of installed capacity came from eligible renewable energy resources in 2013.
Eligible renewable energy resources include wind, solar, photovoltaics, hydropower, hydrogen, geothermal, biomass, landfill gas, distributed generation from an eligible renewable energy resource where the generating facility or any integrated cluster of such facilities has an installed generating capacity of not more than five (5) megawatts, other renewable sources approved by the Oklahoma Corporation Commission, demand side management and energy efficiency as provided in Title 17, Oklahoma Statutes, Section 801.6. Energy efficiency and demand-side management may be used to meet up to 25% of the renewable energy goal (i.e., 3.75% of total installed generation capacity).
Unlike the renewables portfolio standards adopted by other states, Oklahoma's renewable energy goal does not require utilities to purchase and retire renewable energy credits to demonstrate compliance. Instead, each utility in Oklahoma that owns or operates electricity generation facilities must file a report with the OCC each year by March 1. The report must document the total installed capacity of all generation facilities, the number of kilowatt-hours (kWh) generated by each facility, and the energy source for each facility.