Solar power in Indiana has been growing in recent years due to new technological improvements and a variety of regulatory actions and financial incentives, particularly a 30% federal tax credit for any size project.30% No Limit Federal Tax Credit!
As of 2026, Indiana ranked 11th among U.S. states for installed solar power with 6.5 GW of photovoltaic panels, up from 18th place with 136 MW in 2015.Indiana Fact Sheet, Solar Energy Industries Association, accessed May 19, 2016 The state nearly doubled its installed capacity in 2025, installing the third most capacity that year.
An estimated 18% of electricity in Indiana could be provided by rooftop solar panels.Report Argues for a Decentralized System of Renewable Power Generation
A 17.5MW plant built at the Indianapolis airport in 2013 was the largest airport solar farm in the U.S.INDSolarFarm A 9MW solar farm was built at the Indianapolis Motor Speedway in 2014. Indiana, SEIA2 new solar farms being planned in Indiana, BloombergBusinessWeek, September 19, 2014
The Mammoth Solar project in Northwest Indiana broke ground in October 2021, and when complete it will be the largest solar project in the United States, with more than 2.8 million panels producing more than 1 gigawatt of power. The first 400 MW phase was completed in July 2024.
Government policy The Government of Indiana has taken a variety of actions in order to encourage solar energy use within the state.
Net metering The state eliminated its net metering program in 2022.
Feed-in tariff Indiana's Northern Indiana Public Service Company, NIPSCO, offers a feed-in tariff of $0.30/kWh for systems from 5 to 10 kW, and $0.26/kWh for systems from 10 kW to 2 MW.NIPSCO - Feed-In Tariff AES Indiana has a Renewable Energy Production program that pays $0.24/kWh for solar from 20 kW to 100 kW and $0.20/kWh for solar arrays of from 100 kW to 10 MW. Payments are for 15 years, participation is limited, and one third of the program, 45,900 MWh/year, will be made available through a reverse auction. No new applications will be accepted beyond March 2013.Indianapolis Power & Light - Rate REP
Indiana Solar Energy Working Group The Indiana Office of Energy Development has created the Indiana Solar Energy Working Group to promote the development of solar energy, including local manufacturing.Solar Energy
Statistics Installed capacity Source: NREL
+ Grid-connected PV capacity (MWp)Indiana Solar Year Capacity Installed % change 2009 0.3 0.3 >200% 2010 0.5 0.2 67% 2011 3.5 3 600% 2012 4.4 0.9 26% 2013 49.4 45 1022% 2014 112 59 111% 2015 136 24 21% 2016 217 81 60% 2017 280 63 29% 2018 327 47 16.7% 2019 420 93 28.4% 2020 473.3 53.3 12.6% 2021 1,618.8 1,145.5 % 2022 1,640 21.2 %
Utility-scale generation + Utility-scale solar generation in Indiana (GWh) Year Total Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec 2013 29 0 0 1 1 1 1 1 1 1 1 10 11 2014 103 3 4 7 8 10 12 11 11 11 11 9 6 2015 155 7 9 13 15 15 15 16 17 14 12 12 10 2016 227 9 17 15 17 21 21 24 24 24 21 19 15 2017 276 8 19 22 22 30 35 33 31 31 18 15 12 2018 290 12 10 29 34 34 33 38 32 27 21 9 11 2019 322 13 20 29 30 31 35 43 40 29 24 15 13 2020 358 12 17 27 31 37 48 45 42 35 30 19 15 2021 532 24 25 45 63 71 69 68 69 68 52 47 68 2022 1,162 60 72 94 101 121 142 131 122 110 100 64 45 2023 243 47 86 110
Major projects
See also
Wind power in Indiana Solar power in the United States Renewable energy in the United States
References
External links Incentives and policies Indiana Renewable Energy Society