Plug-In Solar in Indiana — Status: deferred
Bill: SB 74 / HB 1084 — Plug-In Solar Device Consumer Access Act
Sponsor: Sen. Mark Messmer (SB 74)
Legislative Status: Deferred until 2027. Did not receive a hearing this session.
Last Updated: March 2026
Key Information
| Average Electricity Rate | 13.2¢/kWh |
| Estimated Annual Savings | $145/year |
| TOU Rate Spread | 4¢/kWh |
| Peak Sun Hours/Day | 4.2 |
| Retail Choice | none |
Key Provisions
Would have exempted certified plug-in solar devices from IURC interconnection requirements.
What You Can Do
No specific plug-in solar law. Traditional solar is available with standard interconnection.
What You Can't Do (Yet)
Utilities currently require interconnection agreements. No plug-in solar exemption.
Available Rebates & Incentives
Indiana sales tax exemption for solar equipment. Property tax exemption for residential solar systems. Net metering available through Duke Energy Indiana and AES Indiana. The federal 30% ITC (Section 25D) expired December 31, 2025.
Incentive Program Links
- DSIRE — Indiana Solar Incentives — Full list of Indiana state and utility solar incentive programs, including sales and property tax exemptions.
Demographics (US Census 2023)
| Population | 6,973,333 |
| Total Households | 2,756,009 |
| Owner-Occupied | 1,922,707 |
| Renter-Occupied | 833,302 |
| Single-Family Homes | 2,175,794 |
| Apartment Units (5+) | 398,012 |
| Median Household Income | $71,957 |
| Median Home Value | $218,200 |
Solar Resource Data (NREL PVWatts)
| Peak Sun Hours/Day | 4.9 |
| Optimal Tilt Angle | 32° |
| Optimal Azimuth | Due South (180°) |
| Est. Annual kWh (800W system) | 1149 kWh |
| Best Solar Months | July-August |
Major Utilities
| Utility | Customers | Net Metering |
|---|---|---|
| NIPSCO | ~500,000 customers | No |
| Duke Energy Indiana | ~820,000 customers | No |
| AES Indiana | ~530,000 customers | No |
| CenterPoint Energy Indiana | ~150,000 customers | No |
| Indiana Michigan Power | ~600,000 customers | No |