2026 · No Federal Tax Credit · NREL + EIA Data
Solar Panels in Rhode Island: Cost, Payback & ROI (2026)
Is solar still worth it in Rhode Island after the 30% federal tax credit expired? These pre-computed estimates use NREL PVWatts production data and current 27.8¢/kWh Rhode Island electricity rates for a typical home using 900 kWh/month.
Section 25D (30% federal solar tax credit) expired December 31, 2025
All numbers below reflect 2026 math with no federal residential credit. State incentives, where applicable, are noted in the section below.
Rhode Island Solar at a Glance
Based on a 900 kWh/month home ($250/mo electric bill at 27.8¢/kWh), 100% offset, no state rebate applied.
8.8 kW
For 900 kWh/month home
$25,902
At $2.95/W (LBNL 2024 avg)
8.0 years
Without state rebate
$3,002
Estimated annual savings
$96,014
Cumulative before rebate
$70,112
Savings minus system cost
27.8¢/kWh
very high vs. 16.0¢ U.S. avg · EIA 2025
1,230 kWh/kW/yr
limited · 3.8 peak sun hrs/day · NREL PVWatts
Is Solar Worth It in Rhode Island in 2026?
Rhode Island's 27.8¢/kWh electricity rate is one of the highest in the country, driven by similar infrastructure constraints as the rest of New England. The state's Renewable Energy Growth (REG) program and robust net metering policy have made solar one of the faster-growing markets in the Northeast relative to its small size.
For a typical Rhode Island home consuming 900 kWh per month, our calculation shows a 8.8 kW system needed for 100% offset. At the current national average installed cost of $2.95/W (LBNL Tracking the Sun 2024), that's $25,902 gross before any state rebates. Year-one savings of $3,002 grow each year as electricity rates escalate — the model assumes 2.5%/year (EIA AEO 2024).
The 8.0 years payback period is solid — at or below the national average of 8–12 years. Over 25 years — the standard warranty period for most premium panels — a Rhode Island homeowner following this profile would save an estimated $96,014 total, for a net benefit of $70,112 after recovering the system cost.
Year-by-Year Savings Snapshot: First 10 Years
Based on 8.8 kW system, 0.5%/yr degradation, 2.5%/yr rate escalation, no state rebate.
| Year | Production (kWh) | Annual Savings | Cumulative |
|---|---|---|---|
| Year 1 | 10,800 | $3,002 | $3,002 |
| Year 2 | 10,746 | $3,062 | $6,064 |
| Year 3 | 10,692 | $3,123 | $9,187 |
| Year 4 | 10,639 | $3,185 | $12,372 |
| Year 5 | 10,586 | $3,248 | $15,621 |
| Year 6 | 10,533 | $3,313 | $18,934 |
| Year 7 | 10,480 | $3,379 | $22,312 |
| Year 8 | 10,428 | $3,446 | $25,758 |
| Year 9✓ Paid off | 10,375 | $3,514 | $29,272 |
| Year 10 | 10,324 | $3,584 | $32,857 |
System cost to recover: $25,902. Table shows savings without state rebate applied. Use the interactive calculator to enter your actual bill and any rebate.
Solar Incentives in Rhode Island (2026)
Rhode Island's Renewable Energy Growth program pays a fixed rate for exported solar over 15–20 years, offering long-term revenue certainty beyond net metering.
- Renewable Energy Growth (REG) program — fixed export rate
- Net metering at retail rate
- Property tax exemption on solar
- Sales tax exemption on solar equipment
Incentive programs change frequently. Verify current offerings at dsireusa.org or directly with your utility before making any purchasing decision.
How We Calculate Rhode Island Solar ROI
These estimates use the same methodology as our interactive solar ROI calculator, applied to Rhode Island-specific data:
System cost
$2.95/W installed
LBNL Tracking the Sun 2024
Solar production
1,230 kWh/kW/yr
NREL PVWatts v8
Electricity rate
27.8¢/kWh
EIA Residential Rates 2025
Rate escalation
2.5%/year
EIA Annual Energy Outlook 2024
Panel degradation
0.5%/year
NREL (Jordan & Kurtz, median)
System lifetime
25 years
Standard warranty period
No Section 25D (federal residential solar credit) is included — it expired December 31, 2025. State incentives are not reflected in these pre-computed figures; use the interactive calculator to enter specific rebate amounts.
Calculate With Your Actual Numbers
The figures above use statewide averages. Enter your actual monthly bill, any Rhode Island rebate amounts, and your offset target in our interactive calculator for a personalized estimate.
Frequently Asked Questions — Solar in Rhode Island
Compare Other States
Estimates are based on NREL PVWatts v8 production data, EIA 2025 electricity rates, and LBNL 2024 installed cost benchmarks. Actual savings vary by roof pitch, shading, utility rate structure, and local permit costs. This is not financial advice. Consult a licensed solar installer before making any purchasing decision.