Solar power in Ohio has been increasing, as the cost of photovoltaics has decreased. Ohio installed 10 MW of solar in 2015.[1] Ohio adopted a net metering rule which allows any customer generating up to 25kW to use net metering, with the kilowatt hour surplus rolled over each month, and paid by the utility once a year at the generation rate upon request. For hospitals there is no limit on size, but two meters are required, one for generation, the other for utility supplied power.[2] As of March 2026, Ohios installed solar passed 6,330 MW, marking a significant surge in solar capacity. Solar now produces 5.75% of the states overall power generation. [3]
In 2010, the 12 MW solar farm in Upper Sandusky was the largest solar farm in the state.[4][5] It was later surpassed by the 20MW DG AMP Solar Bowling Green farm, which was completed in January 2017.[6] In December 2024 Fox Squirrel Solar came online in Madison County, Generating 577 MWs. Becoming the largest solar operation in the state.[7] In 2025 construction began on Oak Run Solar Farm. This project will deliver up to 800 MWs in the coming years. The Oak Run project will also feature a 300 MW battery energy storage facility in Madison County[8] The Oak Run Solar project plans to implement an agrivoltaic program for grazing and crops. This will be the nations largest and first of kind utility scale solar energy plan for live stock and animal grazing.[9] The Oak Run Solar Project will occupy approximately 4,400 acres.
Costs have decreased to the point that the average consumer may save approximately $17,527 over a 20-year period by installing solar panels.[10] Euclid's City Hall and library installed solar panels and expects to save $25,000 over the next 15 years. The panels were installed at no cost to the city by Ohio Cooperative Solar, which is leasing the rooftops.[11]
Overall capacity of Ohio's utility-scale solar projects was estimated at 100 MW in December 2020, with an additional 400 MW projected to come online within a year.[12]
Toledo area
In 2009, ground broke on what was then one of the largest solar fields in the United States, located in Wyandot County, near Upper Sandusky. The 12-MW plant, finished in September 2010,[13] was constructed by Germany-based Juwi Solar and is called Wyandot Solar LLC., leasing its energy to AEP.[14][15]
In 2009, University of Dayton graduate Zachary Layman's company Solar Roadways received a $100,000 grant from the U.S. Department of Energy to develop his solar road prototype, which embeds solar panels into driving surfaces.[22] It won General Electric's Ecomagination Challenge Award in 2010.[23]
Another of the state's largest solar arrays was constructed by The Dayton Power and Light Company in Dayton.[24] The solar field generates 1.1 Megawatts of power.[25] The facility will consist of 9,000 solar panels constructed over 7 acres (28,000m2), and will generate enough electricity to power nearly 150 homes.[25][needs update]
Columbus area
Central Ohio in recent years has seen a surge in the number of solar projects. The largest project approved and currently under construction is Oak Run Solar. Located in Madison County this project will generate up to 800 MW of power. Marking the largest solar project ever approved in the states history.[26] Currently, the largest operating solar project in the state is Fox Squirrel Run, which generates 577 MW of power.[27]
Elsewhere
In September 2009, Third Sun Solar in collaboration with the Akron Metro Regional Transit Authority and Sharp Solar Energy Solutions Group installed the largest rooftop solar array in the state, comprising 2,076 solar modules producing 488kW.[28][29]
Cincinnati Zoo and Melink Corporation announced the opening of a new 1.56 MW solar canopy in 2011. The 6,400 solar panels, located in the Zoo's Vine Street Parking Lot, provide 20% of the Zoo's power needs.[30]
HB6, which passed the state legislature in July 2019, phases out Ohio's renewable portfolio standard completely.[33] A referendum petition has been started to overturn HB6. Ohio had a renewable portfolio standard which calls for 0.06% from solar by 2012, 0.09% by 2013, and 0.5% from solar and 12.5% from renewable sources by 2026.[34] However, the standard was frozen in government in 2014 and no further increases were required.[1] Ohio used 154,145 million kWh in 2010.[35] Approximately 75 MW is required to generate 0.5% of the state's demand. Covering rooftops with solar panels in Ohio (46,800 MW) would generate 35.3% of demand.[36][needs update]
↑Sherwood, Larry (June 2011). "U.S. Solar Market Trends 2010"(PDF). Interstate Renewable Energy Council (IREC). Retrieved 2011-06-29.
↑Sherwood, Larry (July 2010). "U.S. Solar Market Trends 2009"(PDF). Interstate Renewable Energy Council (IREC). Archived from the original(PDF) on 2010-09-25. Retrieved 2010-07-28.
↑Sherwood, Larry (July 2009). "U.S. Solar Market Trends 2008"(PDF). Interstate Renewable Energy Council (IREC). Archived from the original(PDF) on 2009-11-23. Retrieved 2010-07-24.
↑Sherwood, Larry (July 2009). "U.S. Solar Market Trends 2008"(PDF). Interstate Renewable Energy Council (IREC). p.16. Archived from the original(PDF) on 2009-11-23. Retrieved 2010-07-24.
↑Sherwood, Larry (July 2012). "U.S. Solar Market Trends 2012"(PDF). Interstate Renewable Energy Council (IREC). p.16. Retrieved 2013-10-11.
↑Sherwood, Larry (July 2014). "U.S. Solar Market Trends 2013"(PDF). Interstate Renewable Energy Council (IREC). Retrieved 2014-09-26.
