Solar Panel Cost in Rhode Island (2026): Price, Payback, Incentives

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

At the state median installed price of $3.50 per watt (estimate), a 5.3 kW (estimate) system that covers a typical home's use costs about $18,600 (estimate) before incentives. Quotes vary with roof, equipment and installer.

Solar Panel Cost in Rhode Island

A typical Rhode Island home uses 567 kWh a month^[1] of electricity. Covering that with solar takes a system of about 5.3 kW est.^[1,2], which costs roughly $16,000 to $21,500 est.^[1,2,3] before incentives at the state's median installed price. With Rhode Island's average residential price of 29.05¢ per kWh^[4], our model puts payback at about 9 years est.^[1,2,3,4,5]. Your quote, roof and utility plan will move these numbers, so treat them as a starting point.

Rhode Island solar at a glance

Average electricity price29.05¢/kWh^[4]Jan–Aug 2026 average (preliminary)

Average home use567 kWh/mo^[1]2024 average

Solar output per kW1,294 kWh/yr^[2]PVWatts estimate for Providence

Median installed price$3.50/W^[3]Estimate, before incentives

Typical system5.3 kWSized to cover 100% of use

Typical price$18,600Estimate, before incentives

Year-1 savings$1,980Estimate

Payback9 yearsEstimate, cash purchase

Estimates use the inputs above and the assumptions in our methodology: Rhode Island net metering: exports credited at the retail rate (statewide rule; your utility's tariff may differ). Prices rise 2.5% a year; panels lose 0.5% a year.

Solar cost in Rhode Island by system size

Same assumptions as the typical home above; only the system size changes. Prices are the state median before incentives and include the incentives our calculator applies by default in Rhode Island.

Estimated cost, output and payback by system size in Rhode Island
System	Price before incentives^[3]	After incentives	kWh in year 1^[2]	Year-1 savings^[4]^[5]	Payback (years)
4 kW	$14,000	$14,000	5,180	$1,500	9
6 kW	$21,000	$21,000	7,760	$1,980	10
8 kW	$28,000	$28,000	10,350	$1,980	12
10 kW	$35,000	$35,000	12,940	$1,980	15
12 kW	$42,000	$42,000	15,530	$1,980	17

Incentives that lower the price in Rhode Island

Federal · tax creditEnding soon

Business credit for leased and PPA systems (48E)

Claimed by the system owner, not the homeowner; solar must begin construction by July 4, 2026 or be in service by December 31, 2027^[6]

If a company owns the panels on your roof (a lease or power purchase agreement), that company may claim the business clean electricity investment credit and can reflect it in your price. You cannot claim it yourself.

Who: Third-party-owned systems (leases and PPAs). Ask the provider whether the price assumes this credit.
Deadline: December 31, 2027
Checked: November 5, 2026

State · performance paymentAvailable

Renewable Energy Growth (REG) Program - Rhode Island Energy

15- or 20-year fixed per-kWh tariff paid on all production instead of net metering. The Commerce RI page cites 33.85 or 32.35 cents/kWh for small solar 'this year', depending on size and term.^[7]

Alternative to net metering run by Rhode Island Energy. It cannot be combined with the REF grant, and the year of the quoted rates was not stated.

Who: Alternative to net metering run by Rhode Island Energy. It cannot be combined with the REF grant, and the year of the quoted rates was not stated.
Deadline: None set in the source
Checked: November 5, 2026

State · tax exemptionAvailable

Sales Tax Exemption for Renewable Energy Products (R.I. Gen. Laws 44-18-30(57))

100% exemption from Rhode Island sales tax on solar PV modules, inverters, manufactured mounting racks and manufacturer-specified monitoring equipment^[8]

Applies to the listed renewable energy products (panels, DC-to-AC inverters, manufactured racks and ballast pans, manufacturer-specified monitoring and control equipment), not to generic electrical materials. No sunset appears in the statute text.

Who: Applies to the listed renewable energy products (panels, DC-to-AC inverters, manufactured racks and ballast pans, manufacturer-specified monitoring and control equipment), not to generic electrical materials. No sunset appears in the statute text.
Deadline: None set in the source
Checked: November 5, 2026

All Rhode Island incentives, including utility and local programs →

How Rhode Island utilities credit your solar

Rhode Island Energy must net meter rooftop solar. Output up to your own usage in each billing period earns a renewable net-metering credit worth the per-kWh supply (last resort service), distribution, transmission and transition charges. Since a 2025 law (effective June 27, 2025), production above your monthly usage earns only the wholesale ISO-New England energy clearing price instead of the old avoided-cost rate. A credit balance left after the annual reconciliation can be cashed out.^[5]

We have not added every Rhode Island utility yet, so the estimates on this page use the state-level rule: Rhode Island net metering: exports credited at the retail rate (statewide rule; your utility's tariff may differ).

Full Rhode Island net metering and export-credit rules →

Next steps

Run the solar calculator with Rhode Island defaults and your own bill.
Rhode Island solar incentives
Rhode Island net metering and export credits
How to vet installers in Rhode Island
Spot solar sales red flags and compare financing before you sign.

Frequently asked questions

How much do solar panels cost in Rhode Island?

At the state median installed price of $3.50 per watt est.^[3], a 5.3 kW est.^[1,2] system that covers a typical home's use costs about $18,600 est.^[1,2,3] before incentives. Quotes vary with roof, equipment and installer.

How long does solar take to pay for itself in Rhode Island?

For a cash purchase at the state's average electricity price of 29.05¢ per kWh^[4], our model estimates about 9 years est.^[1,2,3,4,5]. Your utility's export credit and rate plan matter a lot; see the export-credit table above.

Is there still a federal solar tax credit?

Not for homeowners who buy. The Federal Residential Clean Energy Credit (25D)^[9] does not apply to systems whose installation is completed after December 31, 2025. Leased and PPA systems are different: the company that owns the system may still claim a business credit.

Change log

Nov 5, 2026Monthly output per kW in Providence updated to [83.2, 87.1, 118.2, 128.1, 135.1, 128.8, 138.2, 128.2, 114.1, 95.4, 70.9, 66.4] kWh/kW/month (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).

Nov 5, 2026Average solar radiation on the panels in Providence updated to 4.7 kWh/m2/day (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).

Nov 5, 2026Solar output per kW in Rhode Island (PVWatts, Providence) updated to 1293.6 kWh/kW/yr (NREL/NLR PVWatts v8 (1 kW-DC, fixed roof mount, 20° tilt, south-facing, 14% losses, TMY weather)).

Nov 5, 2026Renewable Energy Fund (REF) Small-Scale Solar Grant (Commerce RI): now "$1.65 per watt DC for systems up to 8.8 kW; larger systems get the maximum of $14,500 per project (paid to the installer, who passes it through)" (closed).

Nov 5, 2026What the rule says updated to “excess renewable net-metering credits shall be equal to the wholesale electricity rate, which is hereby declared to be the ISO-New England energy clearing price” (R.I. Gen. Laws § 39-26.4-2(8) (as amended by P.L. 2025, ch. 256 and ch. 269, effective June 27, 2025), read via web.archive.org snapshot of 2026-10-14 (rilegislature.gov refuses direct fetches)).