Solar Panels in Rhode Island (2026 Guide)

Q: How much do solar panels cost in Rhode Island in 2026?

Roughly $2.90 to $3.00 per watt before incentives — about $14,500 to $15,300 for a 5 kW system and $29,000 to $30,500 for 10 kW.

Q: Does Rhode Island have a solar tax credit?

No state income-tax credit, but it offers the REF grant or REG tariff, plus full sales-tax and property-tax exemptions. The 30% federal credit expired December 31, 2025.

Q: What's the difference between REF and REG?

REF is an upfront grant paired with net metering; REG is a long-term contract that pays you per kWh produced. You generally pick one. Your installer can model which is better for you.

Q: Does Rhode Island still have net metering?

Yes, but new systems earn about 80% of the retail rate on exported energy. Power used on-site still offsets full retail.

Q: Why is solar worth it in Rhode Island without the federal credit?

Rhode Island's electricity is among the priciest in the U.S. (about 29 cents per kWh), so each offset kWh saves a lot — and the state still offers grants or tariffs plus tax exemptions.

Rhode Island has some of the highest electricity rates in the country, and it still backs solar with real state programs — an upfront grant, a production-based tariff, and full sales- and property-tax exemptions. The federal credit is gone, but the local support and expensive power keep the math working. Here's what's actually available in 2026 and the one choice that shapes your payback.

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How Much Do Solar Panels Cost in Rhode Island?

Rhode Island installs average roughly $2.90–$3.00 per watt before incentives. For a typical home system:

5 kW system: ~$14,500–$15,300
10 kW system: ~$29,000–$30,500

Your real price depends on your roof, equipment, and installer. See our 2026 solar cost breakdown.

Rhode Island Solar Incentives in 2026

No federal tax credit in 2026

The 30% federal residential solar tax credit expired December 31, 2025 and is not available for systems installed in 2026. Some older pages still show it — ignore that. See our 2026 tax credit guide.

Pick one — the REF grant OR the REG tariff

Rhode Island offers two main solar programs, and you generally choose one, not both:

Renewable Energy Fund (REF) grant — an upfront rebate (your installer applies) for net-metered systems, awarded in first-come funding rounds until each round's money runs out. There's also a battery storage adder.
Renewable Energy Growth (REG) tariff — instead of net metering, you sign a 15- or 20-year contract that pays a fixed rate for every kWh your system produces. Enrollment opens annually with a capped allocation that can fill up.

Which path wins depends on your roof and usage, so model both with your installer before deciding.

Sales & property tax exemptions

Residential solar equipment and installation are fully exempt from Rhode Island's 7% sales tax, and residential renewable systems are exempt from local property-tax assessment — so adding solar doesn't raise your property tax bill.

Low-income options

Rhode Island runs income-qualified pathways (Solar for All adders and the Affordable Solar Access Pathways lease program) for eligible households. These have seen administrative changes recently, so confirm current enrollment status before counting on them.

Net Metering in Rhode Island

Rhode Island still offers net metering, but new systems no longer get the full 1-for-1 retail credit. Systems connected after April 15, 2023 earn roughly 80% of the retail rate on energy exported to the grid. Power you use in real time still offsets the full retail rate. The takeaway: size your system to match your own usage rather than overbuilding, since exports are worth a bit less than what you pay. (Customers of small municipal utilities like Block Island and Pascoag follow their own rules.)

Major Rhode Island Utility

Nearly the entire state is served by Rhode Island Energy (formerly National Grid). Rhode Island's residential rates run around 29¢ per kWh — roughly 40% above the national average, among the highest in the country. Those high rates are the single biggest reason solar pays off here.

Is Solar Worth It in Rhode Island in 2026?

For most owner-occupied homes with decent sun, yes. The federal credit is gone, so payback is longer than it was — but Rhode Island stacks up three real advantages: very high electricity rates, a choice between the REF upfront grant and the REG production tariff, and no sales or property tax on your system. The honest caveats: exports earn about 80% of retail, and both REF and REG run on capped, first-come rounds that can fill, so timing matters. A custom quote for your roof and usage shows your real payback.

Frequently Asked Questions

How much do solar panels cost in Rhode Island in 2026?
Roughly $2.90–$3.00 per watt before incentives — about $14,500–$15,300 for 5 kW and $29,000–$30,500 for 10 kW.

Does Rhode Island have a solar tax credit?
No state income credit, but the REF grant or REG tariff, plus full sales- and property-tax exemptions. The federal credit expired December 31, 2025.

What's the difference between REF and REG?
REF is an upfront grant with net metering; REG is a long-term contract paying you per kWh produced. You generally pick one.

Does Rhode Island still have net metering?
Yes, but new systems earn about 80% of retail on exported energy (on-site use still offsets full retail).

Why is solar worth it in Rhode Island without the federal credit?
Electricity is among the priciest in the U.S. (~29¢/kWh), so each offset kWh saves a lot, and the state still offers grants/tariffs plus tax exemptions.

Sources

Incentives (REF/REG): RI Commerce, RI Office of Energy Resources. Net metering: EnergySage. Costs & rates: EnergySage, ElectricChoice. Federal credit expiration: IRS OBBB guidance.