Solar Panel Cost in Indiana (2026 Estimate)

BySunMetricLab Editorial Team·Independent solar research and calculators

Data last updated September 10, 2026 · ranks #34 of 50 states for modeled payback

Indiana averages about 4.2 peak sun hours a day (below the national average) with an approximate residential electricity rate near 15¢/kWh, in the mid-range nationally. In the model used here, an 8 kW system in Indiana produces roughly 9,810 kWh a year and trims about $1,500 off annual electricity costs, paying back its net cost in about 11.4 years. That is a middle-of-the-pack payback, so whether solar is worth it in Indiana often comes down to your specific rate, roof, and any state or utility incentives.

Estimated system cost and payback in Indiana

Costs assume roughly $3.00/watt installed for Indiana; the net column applies a 30% federal credit for comparison with quotes that include it. Savings and payback use the state's sun hours and rate above.

The 30% federal Residential Clean Energy Credit ended for systems paid for after December 31, 2025 under the 2025 federal budget law. Net-after-credit figures apply only if you still qualify (for example a 2025 expenditure, or a leased system where the installer passes a credit through). Confirm with a tax professional.

What moves the numbers in Indiana

Two inputs drive most of the difference between states: how much sun a system sees and what each offset kilowatt-hour is worth. Indiana's 4.2 sun hours set production, and its roughly 15¢/kWh rate sets what that production saves. The bigger unknowns are your roof, shading, and how your utility compensates exported power, since a lower export rate can pull real savings below the retail-rate figure above.

Net metering and export credits in Indiana

Indiana ended traditional net metering for customers of its investor-owned utilities through Senate Enrolled Act 309 of 2017, with the program closing to new enrollees no later than July 1, 2022. Homes that signed up before the cutoff keep retail net metering for a grandfathering period, until 2047 for systems interconnected before 2018 and until 2032 for those interconnected after. New rooftop systems at Duke Energy Indiana, AES Indiana, NIPSCO, CenterPoint and Indiana Michigan Power instead fall under an excess distributed generation (EDG) tariff.

Under EDG, exports are credited at 125 percent of the utility's average wholesale energy price, which has typically worked out to only a few cents per kilowatt-hour, a fraction of the retail rate, and the netting happens instantaneously rather than over a month, a method the Indiana Supreme Court upheld in 2022. That makes exported energy much less valuable than power you consume as it is produced, so systems in Indiana are best sized to daytime loads or paired with storage. Rural electric cooperatives and municipal utilities were never covered by the statute and offer their own arrangements, some of them more favorable.

Indiana solar incentives beyond the federal credit

State-level support in Indiana is thin. The most useful item is a property tax exemption: the assessed value added by a solar system can be excluded from your property taxes if you file the deduction with your county assessor, so the installation should not raise your bill.

There is no state income tax credit, no rebate program, no SREC market and no sales tax exemption for solar equipment, though some utilities and co-ops have run small efficiency or demand-response incentives. The Indiana Office of Energy Development periodically administers grants aimed at public entities and businesses rather than homeowners; verify current residential options before assuming any state money beyond the property tax treatment.

Utilities and rate plans in Indiana

Duke Energy Indiana is the largest provider and covers much of central and southern Indiana, AES Indiana serves Indianapolis, NIPSCO covers the northern third of the state, CenterPoint Energy serves the Evansville area and Indiana Michigan Power serves the Fort Wayne and South Bend regions. Roughly a third of Hoosiers get power from cooperatives or municipal utilities with their own solar rules. Residential rates have risen sharply over the past decade and sit above the regional average at several IOUs, which improves the value of self-consumed solar. Most residential tariffs are flat-rate with a fixed monthly charge and no demand charge, though several utilities offer optional time-of-use plans; with low EDG export credits, the goal is to use as much of your production on site as possible.