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.
Is Plug-In Solar Legal in Indiana?
A dedicated statewide plug-in solar pathway is not currently active in Indiana; SB 74 / HB 1084 is listed as deferred. Before installing or connecting equipment, confirm current utility or interconnection rules, local code or permit requirements, property or lease conditions, outlet and electrical suitability, and the equipment listing and manufacturer instructions.
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 |
Explore Your Next Steps in Indiana
Use these tools and guides alongside the state-specific rules above to evaluate your space, potential savings, and the right connection approach.
- Compare every state — Return to the national tracker to compare enacted laws, pending bills, and unclear jurisdictions.
- Check your IN setup readiness — Review placement, outlet, property, and state-rule questions before choosing equipment.
- Estimate savings in Indiana — Use your location and setup assumptions to estimate bill savings and storage value.
- Understand off-grid and grid-connected use — Separate truly off-grid or portable solar from equipment that connects to a building circuit or utility grid.