Rhode Island panels cost an ordinary price, and the power they replace is some of the most expensive in the country, so the question is how long you will stay. At full price, a typical home system pays for itself in about 9 years in our example; with the state grant, about 4. If you may move sooner than your own payback, a purchase is hard to justify.
Typical payback, full priceAbout 9 years
Without or with the grantAbout 4 to 9 years
Typical owned 7.91 kW Rhode Island system at $22,702 cash (EcoGen Solar Cost Index, September 2026), Rhode Island Energy, net metering, no grant; about 4 years with the about $13,052 state grant. EIA average price and the 22.7¢ average net metering credit; 40% used at home as it is made and $237 a year in owner costs are our assumptions. See the math.
- Time in home: set your likely moving date against the payback on your own quote.
- The grant: the last 2026 round closes October 16, 2026, or sooner if the money runs out.
- The choice: grant plus net metering, or the RE Growth payment. You cannot take both.
2026 rules: home systems installed after December 31, 2025 get no federal homeowner credit (IRS). Since June 27, 2025, a home system of 25 kW or less no longer has to be sized to past use to get net metering.
How we checked this guide
Grant rules come from Rhode Island Commerce, the RE Growth price from Rhode Island Energy’s filing, net metering from state law and the utility tariff, and the electricity price from the U.S. Energy Information Administration. The example is the EcoGen Solar Cost Index typical Rhode Island home. Where we assumed a number, the page says so.
The writer and checker shown above are EcoGen staff. EcoGen is paid when homeowners request quotes, which is explained beside the quote form. Read our editorial standards.
The Rhode Island test: will you stay past payback?
Panels cost about $2.87 per watt here, close to the national price. The power they replace averaged 29.27¢ per kWh (kilowatt-hour, the unit on your bill), one of the highest prices in the country. You pay once, up front, and save every year after. The longer you own the house, the more of those years you collect. Leave early, and the next owner keeps them. Read each row across.
How long you will stay
Worth a closer look
You expect to own the house well past the payback on your quote.
Pause and check
A move or a sale is likely within the payback years.
Check next: your realistic moving date next to the payback your installer shows.
Grant timing
Worth a closer look
Your installer can file in an open Renewable Energy Fund round and the contract names the grant.
Pause and check
The round has closed or its money is gone, and the quote still counts the grant.
Check next: the round your project goes into, and your price without the grant.
Shade
Worth a closer look
A roof that scores a TSRF of 80% or more, the grant’s shade test.
Pause and check
Shade that drops the score below 80%: no grant, and less power.
Check next: the shade report and the TSRF number on it.
Size against your use
Worth a closer look
A system sized to your own yearly use, so exports earn close to full price.
Pause and check
A system that makes far more than you use. The extra earns a low wholesale price.
Check next: twelve months of bills next to the year-one kWh on the quote.
Price and roof
Worth a closer look
A cash price near the Index’s $2.87 per watt and a roof with years of life left.
Pause and check
A roof that needs work soon, or a price far above the Index.
Check next: the roof’s age, the cash price per watt and the financed price side by side.
Full price or with the grant: how many years it takes
Simple payback is the years your savings take to cover what you paid: net cost divided by yearly savings. Start with the typical system at full price. That is your case if the grant round has closed, your roof fails the shade test, or you lease.
- Cash price
- $22,702
- Confirmed incentives
- $0
- Year-one production
- 10,625 kWh
- Used at home / exported
- 40% / 60%
- Average price (EIA, 12 months)
- $0.2927/kWh
- Export credit
- $0.227/kWh
- Owner-cost allowance
- $237/yr
- Used-at-home value
10,625 × 40% × $0.2927$1,244/yr - Export value
10,625 × 60% × $0.227$1,447/yr - Yearly savings after owner costs
$1,244 + $1,447 − $237$2,454/yr - Simple cash payback
$22,702 ÷ $2,454about 9.3 years
Inputs: the EcoGen Solar Cost Index typical Rhode Island system (7.91 kW, $22,702 cash, September 2026; about 1,343 kWh per kW a year, so about 10,625 kWh in year one), with no grant and no federal credit. The 29.27¢ EIA average includes fixed charges, so the rate you really avoid is likely a little lower. The 22.7¢ export credit is the average Rhode Island Energy net metering credit from November 2025 to October 2026; October alone was 27.553¢. It applies to the power left over under the tariff, not to every kWh sent out as it is made. Our assumptions: 40% of the solar power used at home as it is made and 60% sent to the grid, and $237 a year in owner costs ($30 per kW, including a reserve for a new inverter).
Now add the Renewable Energy Fund grant. It pays $1.65 per watt on systems up to 8.8 kW, capped at $14,500. For the 7.91 kW example that is about $13,052, taken off your price, leaving about $9,650. The savings do not change. The net cost does.
| Scenario | Incentives | Net cost | Yearly savings | Simple payback |
|---|---|---|---|---|
| Full price, no grant | $0 | $22,702 | $2,454 | about 9.3 years |
| State grant reaches you | $13,052 | $9,650 | $2,454 | about 3.9 years |
The grant cuts the stay you need by more than half. The last round of 2026 closes on October 16, 2026, or sooner if its money runs out, and no 2027 dates were posted when we checked. Projects must be finished within 12 months of signing.
Run your own Rhode Island numbers
The tool starts with the full-price case. Put in the numbers from your own quote and bill, then press Calculate. Nothing you enter is sent anywhere.
Example result
about 9.3 years
simple cash payback
- Used-at-home value
- $1,244/yr
- Export value
- $1,447/yr
- Owner costs
- −$237/yr
- Yearly savings
- $2,454/yr
- Net cost
- $22,702
Starts with the full-price case. Put the grant in the incentives box to see the other case. Flat first-year values; rates, panel wear and repairs will change the result.
How Rhode Island credits the power you send out
Power used at home saves the full price. Power you send out earns a net metering credit on your bill. Rhode Island Energy, the utility for most of the state, credits solar power up to your own yearly use near the full rate. Power beyond your own use earns a lower wholesale price.
Used at home: 4,250 kWh. Each one replaces power you would have bought, so it saves the full variable rate ($0.2927 here).
Sent to the grid: 6,375 kWh. These earn whatever your utility pays for exports ($0.227 here). That can be far less.
So size matters. The typical 7.91 kW system makes about 10,625 kWh a year, and many Rhode Island homes use less. Size to twelve months of bills, plus any heat pump or electric car you plan, then negotiate the price per watt.
Block Island Utility District credits exports at 15.40 cents per kWh for 2026. Clear River Electric and Water District credits all generation at about 7.15 cents. Our example does not fit those areas; ask the installer to model their rules.
Get quotes that show both paths
A Rhode Island quote should show the grant with net metering and the RE Growth payment, priced against your own use.
Solar providers that serve your area may contact you, and they pay EcoGen for the introduction. How we make money.
Grant plus net metering, or RE Growth: a choice made once
The second path is Renewable Energy Growth, run by Rhode Island Energy. It pays a fixed 31.55 cents per kWh for every kWh your panels make, for 15 years, on systems up to 15 kW. For the typical 7.91 kW system that is about $3,352 in year one. It comes with no grant and replaces net metering instead of adding to it. Small solar has 3 MW (3,000 kW) of room this program year, first come, first served, until March 31, 2027.
The fixed price suits a household that wants a payment that does not move with electric rates. Net metering with the grant suits one whose own use absorbs most of the output. The installer files the paperwork, so the choice is often made inside the quote. Ask for both paths priced in writing against your bills.
Owning, leasing and who keeps the money
The grant is only for a system you own on a property you own. In a lease or power purchase agreement (PPA), the company owns the panels, so no grant reaches you, and an RE Growth payment can go to the company.
| Option | Who owns the panels | Upfront | Ongoing | Check before signing |
|---|---|---|---|---|
| Cash | You | Full price, less any grant | None to a lender. | The grant amount, and what you owe if it is not approved. |
| Loan | You | Often $0 | Loan payment, plus your remaining utility bill. | Cash vs financed price. A dealer fee can take back much of the grant. |
| Lease | Solar company | Often $0 | Monthly lease payment, plus your remaining utility bill. | No grant for leases; an RE Growth payment can go to the company. Ask what happens when you sell. |
| PPA | Solar company | Often $0 | A price per kWh for the power the panels make. | Same as a lease. Compare the PPA price with your own rate per kWh. |
For loan terms and a payment calculator, see our solar financing guide. Zero-down offers are covered in our free solar guide.
Six lines a Rhode Island quote needs
Get two or three quotes. One that cannot answer these gives a payback you cannot check.
- The path in writing. Grant plus net metering, or RE Growth. The quote should name one.
- The grant line. Grant amount, the round it is filed in, and your price if it is not approved.
- Shade score. The TSRF from the shade report. The grant needs 80% or more.
- Size against your bills. Year-one kWh next to your own yearly use from twelve months of bills.
- Cash and financed prices. Both totals side by side, with any dealer fee shown.
- Coastal build. Design wind speed and corrosion-resistant parts near the shore.
Compare Rhode Island solar quotes
Ask each installer which path the quote uses and when the grant would be filed. Enter your ZIP code to request quotes from solar providers that serve your area.
How EcoGen is paid
EcoGen America does not sell or install solar. When you request quotes, we pass your request to solar providers serving your area, and they pay us for the introduction. Providers can include installers, solar marketplaces and lead exchanges, and more than one may contact you. You never pay us. This is not an application to the Renewable Energy Fund.
More on solar in Rhode Island
- Rhode Island solar incentives: the grant or the RE Growth payment
- What solar costs in Rhode Island
- Free solar panels in Rhode Island: zero-down deals and who gets paid
- Are solar panels worth it? The national guide and payback calculator
All 51 state guides
Rhode Island solar questions
Are solar panels worth it in Rhode Island?
Often, if you will stay long enough. In our example a typical owned system pays back in about 9 years at full price and about 4 with the state grant. Expensive power keeps adding to the savings after that. If you may move before your own payback, a purchase is hard to justify.
Is solar worth it in Rhode Island despite the high cost?
The panels are not the expensive part. The Index puts Rhode Island at $2.87 per watt, an ordinary price. The power is what costs a lot: 29.27¢ per kWh on average. Solar replaces that power, so high rates help the case. Time in the home decides how much of it you collect.
Which should I choose, net metering or the RE Growth payment?
The one your use supports, priced both ways in writing. The grant comes with net metering. RE Growth pays 31.55 cents per kWh for every kWh for 15 years on systems up to 15 kW and replaces net metering. You cannot take both.
Does the federal tax credit still help in Rhode Island?
No, not for a system you own. The homeowner credit does not apply to systems installed after December 31, 2025. That leaves the state grant or RE Growth, net metering and the price you negotiate. Rhode Island also exempts home solar from sales tax and property tax.
How does selling my house work with solar in Rhode Island?
A system you own goes with the house, and state law (R.I. Gen. Laws 44-3-3(a)(48)) keeps it off your property tax bill. A leased system must be taken over by the buyer or bought out, and an RE Growth contract runs for its full term. If a sale is likely soon, read those terms before you sign.
Is coastal weather a reason to skip solar in Rhode Island?
No, but it is a reason to build for it. Near the shore, ask the quote to name the design wind speed and corrosion-resistant racking and hardware. A system that lasts protects the long stretch of savings that makes solar pay here.
Sources, method and corrections
The example uses the EcoGen Solar Cost Index typical Rhode Island system (September 2026), current program rules and the EIA average price. The export credit is the 22.7¢ average Rhode Island Energy net metering credit from November 2025 to October 2026. Our assumptions: 40% of the solar power used at home as it is made and 60% sent to the grid, and $237 a year in owner costs ($30 per kW, including a reserve for a new inverter). Simple payback uses flat first-year values and counts the grant at the start. The calculator runs in your browser and sends nothing.
Spotted an error? Tell us through our corrections and feedback process.
- Rhode Island Commerce: Renewable Energy Fund (grant rounds)
- Rhode Island Commerce: REF Small-Scale Program flyer
- Rhode Island Energy: RE Growth 2026-27 filing (price and term)
- Rhode Island Energy: net metering tariff RIPUC No. 2279
- Rhode Island General Laws 39-26.4-2: net metering
- Block Island Utility District: net metering policy
- Clear River Electric and Water District: 2026 rate change
- U.S. EIA: average residential electricity price by state
- IRS: Residential Clean Energy Credit
- EcoGen Solar Cost Index, September 2026: Rhode Island
