Solar Panels in Decatur, IN: Cost, Payback & Savings
A typical 8.4 kW home solar system in Decatur costs about $30,240 and pays for itself in about 23.7 years, saving roughly $2,043 over 25 years at Indiana's average electricity price of 17.0¢/kWh. Power you send back to the grid earns only about 4.0¢/kWh here, which is built into these numbers.
Monthly solar production in Decatur
Estimated output of a 8.4 kW south-facing roof system. Jun is the strongest month (1,210 kWh); Dec the weakest (496 kWh).
Solar production (kWh) Typical home use, 901 kWh/month
Solar payback calculator for Decatur
Pre-filled with Decatur's sunshine and Indiana's average electricity price. Enter your own bill and an installer's price per watt to see your payback.
Leave export credit blank where the utility offers full net metering. Where exports earn less, solar used at home as it's produced is worth the full price and the rest earns the export credit.
How Decatur compares
- Each kW of panels here produces about 1,304 kWh a year — 2% less than the Indiana median and 5% less than the US median city (1,371 kWh).
- Payback ranks #76 of 88 Indiana places we cover.
- Sunshine varies little across a state; electricity price, installed cost and how utilities credit exported power drive most of the difference between states.
Net metering, tax credits and incentives in 2026
Indiana pays less than retail for exported solar power. Under Excess distributed generation (EDG), power you send to the grid earns about 4.0¢/kWh, against 17.0¢ for power you buy. We assume 40% of a no-battery system's output is used at home as it's produced (worth the full price) and the rest is exported, so each solar kWh is worth about 9.2¢. Using more of your solar yourself, by running appliances midday or adding a battery, raises that.
Indiana utilities credit exports at 1.25 times their average wholesale energy price, about 3.5-4.5¢, updated each year. Source.
There is no federal tax credit for buying home solar installed in 2026. The 30% Residential Clean Energy Credit (Section 25D) ended for systems placed in service after December 31, 2025, so the costs and paybacks on this page include no federal credit.
Indiana and local utilities may still offer rebates, performance payments, property-tax or sales-tax exemptions. Search the DSIRE incentives database for Indiana and ask installers which programs they apply for you.
Frequently asked questions
Is solar worth it in Decatur, IN?
For a typical home, a solar system pays for itself in about 23.7 years and then keeps saving money. Over 25 years the estimated net savings are $2,043. Verdict: hard to justify on savings alone. Your own payback depends on your roof, your bill and the quotes you get.
How many solar panels do I need in Decatur, IN?
A home using 901 kWh a month (the Indiana average) needs about 21 panels of 400 W — a 8.4 kW system — to cover its annual use. Divide your own yearly kWh by 1,304 to get the kW you need.
How much do solar panels cost in Decatur, IN?
At 3.60 dollars per watt, a 8.4 kW system costs about $30,240 before any state or utility incentives. There is no federal tax credit for systems installed in 2026.
How much sun does Decatur get?
Decatur averages 4.6 peak sun hours per day, so each kilowatt of panels produces about 1,304 kWh a year.
Does Indiana have net metering?
Not full retail net metering. Under Excess distributed generation (EDG), exported solar power earns about 4.0¢ per kWh, versus 17.0¢ for power bought from the grid. Solar you use at home as it's produced still saves the full price.
How much does electricity cost in Indiana?
Residential electricity in Indiana averages 17.0¢ per kWh, and a typical home uses 901 kWh a month (EIA).
Solar payback in nearby places
- Bluffton23.8 yrs
- New Haven23.6 yrs
- Fort Wayne23.8 yrs
- Huntington24.0 yrs
- Auburn23.7 yrs
- Marion23.6 yrs
- Kendallville23.9 yrs
- Wabash23.7 yrs