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Quick Answer
Yes — Rhode Island has $0.29/kWh rates (among the highest in the US), the REG program paying $0.27/kWh guaranteed for 15-20 years, a $5,000 REF rebate ($0.65/W), and both 7% sales tax and 20-year property tax exemptions. An 8 kW system reaches payback in approximately 4 years with REG — and generates $75,000+ in 25-year net savings. There is no federal residential tax credit in 2026.
RI Energy Rate
$0.29/kWh
48% above US avg
REG Payment
$0.27/kWh
15-20 yr guarantee
Payback (w/ REG)
~4.4 yrs
Cash purchase
25-yr Net Savings
$58K+
After all costs
Federal Residential Solar Tax Credit (Section 25D) — Expired December 31, 2025
Homeowners who purchase solar with cash or a loan receive $0 in federal tax credits. All numbers on this page reflect this reality. Rhode Island's state incentives make solar worth it anyway.
Here is exactly how the numbers work for the most common residential solar system size in Rhode Island — no rounding, no optimism, no federal credit assumed.
REG payments ($0.27/kWh × 9,600 kWh)
15-20 year guarantee
Net metering savings (80% × $0.29/kWh, ~50% exported)
Post-April 2023 rate
Property tax exemption (20-year)
RI General Laws exemption
Total Annual Value
REG + NM + property tax
Payback WITH REG
~4.4 yrs
REG + net metering + property tax savings
25-year net savings: $58K+
Payback WITHOUT REG
~12.2 yrs
Net metering + property tax savings only
Still worth it — REG enrollment is strongly recommended
Six reasons Rhode Island ranks among the top states for solar return on investment — even in a post-federal-credit environment.
Rhode Island Energy charges $0.29/kWh — 48% above the national average. Block Island residents pay $0.35/kWh. Every kilowatt-hour your system generates is worth more here than almost anywhere in the country.
The Renewable Energy Growth program pays a fixed rate for every kWh your system generates — separate from net metering. An 8 kW system earns $2,592/year. Enrollment opens April 1. This program is what makes RI solar exceptional.
Commerce RI's Renewable Energy Fund pays $0.65/W up to $5,000 for residential solar. Add a battery storage system and get an extra $2,000. REF stacks with REG payments and net metering credits.
Rhode Island exempts all solar equipment and labor from the 7% sales tax — saving $1,736 on a typical 8 kW system. Solar also does not increase your property tax assessment for 20 years under RI General Laws.
RI Energy's ConnectedSolutions program pays $225 per kilowatt of battery capacity during summer demand response events. A 10 kWh battery earns approximately $2,250/year in demand response income — a third revenue stream on top of REG and net metering.
If you lease solar through a financing company, the company can claim the Section 48/48E commercial ITC (30%+ of system cost) for projects beginning construction before July 4, 2026. This can lower your lease payment. The homeowner does not claim the credit — the financing company does.
Rhode Island solar is compelling for most homeowners, but there are situations where the economics weaken significantly.
Section 25D expired December 31, 2025. There is no federal tax credit for cash or loan purchases. This increases the upfront cost vs. prior years. Rhode Island state incentives partially compensate, but the math is different than 2022-2025.
REG enrollment opens April 1 each year on a first-come-first-served basis with a 40 MW annual capacity cap. Not all applicants are guaranteed enrollment. If you miss a round, you wait until the next year. Confirm REG availability before signing a solar contract.
Systems installed after April 15, 2023 receive net metering credits at 80% of the retail rate ($0.232/kWh), not 100%. The remaining 20% of exported generation is compensated at lower wholesale rates. Pre-April 2023 systems are grandfathered at full retail.
Heavy tree shading (over 30%) significantly reduces production and extends payback. North-facing roofs produce 25-35% less than south-facing equivalents. Microinverters or power optimizers help with partial shading but add cost. A site survey is essential before committing.
Any roof older than 15 years should be replaced before solar installation. A roof replacement adds $8,000-$18,000 depending on size and material. This cost extends payback significantly. However, solar can be installed after a new roof at no extra premium.
While solar adds resale value (RI property tax exemption for 20 years), you capture the most financial benefit over a longer period. If you plan to sell within 3-4 years, the upfront payback math is tighter. REG contracts are transferable to a new owner.
No other New England state has this combination of incentives active simultaneously in 2026.
$0.27/kWh × 15-20 yrs
~$38,880 total
Details$0.65/W up to $5,000
+$2,000 battery adder
Details80% retail rate
$1,114/yr for 8 kW
Details7% off all equipment/labor
$1,736 saved on 8 kW
Details20-year exemption
$362/yr average
Details$225/kW summer
$2,250/yr for 10 kWh battery
Details$0 for homeowners
Expired Dec 31, 2025
DetailsFinancing method dramatically affects who captures the REG income and REF rebate — the two most valuable RI-specific incentives.
| Cash Purchase | Solar Loan | Lease / PPA | |
|---|---|---|---|
| Upfront Cost | $18,064 | $0-$500 | $0 |
| You Own System | Yes | Yes | No |
| REG Income Kept By | You | You | Financing company |
| REF Rebate | $5,000 to you | $5,000 to you | Financing company |
| Section 48 ITC | Not applicable | Not applicable | Financing company claims |
| Best For | Max lifetime savings | No upfront, own system | No upfront, no ownership desired |
Bottom line: For most RI homeowners, cash purchase or a solar loan delivers the best 25-year economics because you keep all REG income and the REF rebate. A lease or PPA may make sense if you cannot qualify for financing or want absolutely no upfront cost. See full financing comparison
Your electric rate determines how much net metering saves. All RI utilities qualify for REG, REF, and the state tax exemptions.
RI Energy
$0.29/kWh
Most of Rhode Island
48% above national average
Pascoag Utility District
$0.26/kWh
Burrillville area
Municipal utility, lower rate
Block Island Power
$0.35/kWh
Block Island only
Island grid premium — best NM value
$0 down. Fixed payments. Own your system by year 5. No dealer fees. No prepayment penalty.
Yes. Rhode Island is one of the best states for solar in 2026 even without a federal tax credit. With electricity rates at $0.29/kWh (among the highest in the US), the REG program paying $0.27/kWh for 15-20 years, a $5,000 REF rebate, 7% sales tax exemption, and 20-year property tax exemption, an 8 kW system reaches payback in roughly 4 years and saves $75,000+ over 25 years.
With REG enrollment, the payback period for a typical 8 kW system is approximately 4 years. Without REG (net metering only), payback extends to roughly 9-10 years. The REG program is the critical variable — it adds $2,592/year in guaranteed income on top of electricity savings and should be the first thing you confirm before going solar in RI.
No. Section 25D — the 30% residential solar tax credit for homeowners — expired on December 31, 2025 and was repealed by the One Big Beautiful Budget Act signed July 4, 2025. Homeowners purchasing solar with cash or a loan receive $0 in federal tax credits. Third-party owned systems (PPA/lease) may allow the financing company to claim the commercial Section 48/48E credit for projects beginning construction before July 4, 2026.
The Renewable Energy Growth (REG) program is Rhode Island's guaranteed production payment program. It pays $0.27/kWh for every kWh your system generates for 15-20 years — separate from and in addition to net metering. For an 8 kW system producing 9,600 kWh/year, REG adds approximately $2,592/year in guaranteed income. This program is what makes RI solar uniquely profitable even without a federal credit. Enrollment opens April 1 each year on a first-come-first-served basis.
Rhode Island has four active incentive layers in 2026: (1) REG program — $0.27/kWh guaranteed for 15-20 years; (2) REF rebate — $0.65/W up to $5,000 plus $2,000 battery adder; (3) Sales tax exemption — 7% on all solar equipment and labor; (4) Property tax exemption — 20-year exemption on increased home value from solar. Net metering at 80% retail rate adds a fifth income stream.
For most RI homeowners, cash purchase or a solar loan is better than a lease or PPA in 2026. When you own the system, you keep all REG payments ($2,592/yr for 15 years), the REF rebate ($5,000), and the full value of net metering credits. With a lease or PPA, the financing company keeps the REG income and Section 48 credit. The exception is if you cannot get REF/REG approved or have a difficult roof — then a lease with no upfront cost may be preferable.
Rhode Island Energy's ConnectedSolutions demand response program pays $225 per kilowatt of battery capacity per summer season. A 10 kWh battery typically earns $2,250/year in summer demand response payments, plus a smaller winter payment. Adding battery storage also qualifies for the $2,000 REF battery adder rebate. Combined, battery storage in RI can pay for itself in 4-5 years on top of the solar investment.
Block Island has an electricity rate of approximately $0.35/kWh due to its island grid — making solar economics even stronger there. Pascoag Utility District (in the Burrillville area) charges approximately $0.26/kWh. Most of Rhode Island is served by RI Energy at $0.29/kWh. All locations qualify for REG, REF, and the state tax exemptions.
Get a personalized estimate with REG income, REF eligibility, net metering savings, and exact payback period for your address.
How to enroll in the $0.27/kWh guaranteed payment program before April 1.
Read more$5,000 rebate + $2,000 battery adder — how to apply through Commerce RI.
Read moreCity-by-city pricing from $2.65-$3.20/W. Providence, Newport, Warwick and more.
Read moreWho keeps REG income? Who claims Section 48? Full financing comparison.
Read more7% sales tax + 20-year property tax exemption — combined $8,900+ in savings.
Read moreEarn $225/kW from RI Energy demand response. Qualified batteries and enrollment.
Read morePricing: NuWatt Energy RI installations, EnergySage Marketplace Q1 2026.
RI Energy rate: RI Energy residential tariff R-1, January 2026.
REG program: RI Public Utilities Commission, PY2026 ceiling price filings.
REF rebate: Rhode Island Commerce Corporation, Renewable Energy Fund grant program.
Tax exemptions: RI General Laws — property tax (20-year) and sales tax (7%) exemptions.
ConnectedSolutions: RI Energy demand response program, 2026 incentive rates.