Duke Energy Indiana: how it credits the solar power you send to the grid
Excess distributed generation (EDG): every kWh sent out is credited at 1.25 times Duke's average marginal price of energy from the year before, a few cents per kWh.
Checked November 12, 2026. Utilities change these rules; check the current tariff before you sign.
How it works
Duke Energy Indiana publishes its own EDG rate each year; we assume about 5 cents, close to AES Indiana's. That estimate is about 31% of Indiana's average electricity price.
Indiana closed retail net metering to new customers of its investor-owned utilities in July 2022.
Under EDG, exports are measured instantly, not netted over the month, so any power you don't use the moment it's made earns the low rate.
The rate is updated every year by compliance filing.
What it means for a typical Indiana home
An average Indiana home uses about 11,256 kWh a year. A 7.5 kW system costs about $19,275 at the 2026 median price and makes about 9,990 kWh in its first year, of which we assume about 5,994 kWh goes out to the grid because no one is home to use it.
| First-year savings | Payback | 25-year savings, after the price | |
|---|---|---|---|
| With Duke Energy Indiana's credit | $937 | 20 years | $8,080 |
| If every exported kWh earned the full price | $1,594 | 11 years | $29,089 |
The difference, about $21,009 over 25 years, is what Duke Energy Indiana's rules cost a typical system compared with full net metering. Using more of the power at home, while the sun is up, closes some of that gap. Uses Indiana's average electricity price; Duke Energy Indiana's own prices may be higher or lower. Paid in cash, no federal credit, prices rising 2.5% a year, one inverter replacement.
Also in Indiana: AES Indiana (5.43¢).
All 55 utilities · Solar in Indiana · Lease and PPA terms by company
Sources: PV Tech: Indiana replaces net metering with excess distributed generation; AES Indiana: Rider 16, Excess Distributed Generation (July 2026); U.S. Energy Information Administration (EIA), final 2025 data: Annual State Historical Spreadsheets (Form EIA-861, released October 7, 2026) and Electric Power Annual (October 21, 2026); EnergySage: median quoted price, first half of 2026.