Rhode Island Solar Guide 2026
Everything Rhode Island homeowners need to know: costs, incentives, net metering policy, and what makes this state unique for solar.
Quick answer
Rhode Island solar economics depend mainly on 4.1 average peak sun hours, an estimated $3.1/W installed cost, 23.0¢/kWh electricity, and the state's current net-metering rules.
Reviewed 2026-07-26
- Best for
- Rhode Island homeowners comparing solar costs, incentives, and payback assumptions.
- Inputs needed
- annual kWh usage, utility rate, installed $/W, net-metering policy
- Formula used
- Typical production = system kW × peak sun hours × 365.
- Source checked
- state incentive data, utility tariff checks, Wattcrunch price benchmarks
Key fact about Rhode Island solar
Rhode Island's DGSC program stacks on top of retail net metering, providing an additional per-kWh payment for 15 years — effectively doubling the per-kWh value for some customers.
Peak sun hours
4.1
hrs/day avg
Avg electricity rate
23.0¢
per kWh
Median install cost
$3.1/W
before incentives
Typical payback
9 yrs
8 kW system, avg usage
Typical 8 kW system in Rhode Island
Annual production
11,972 kWh
Year-1 savings
$2,754
System cost (est.)
$24,800
No federal tax credit — Section 25D expired December 31, 2025.
Rhode Island Net Metering Policy
Full retail net metering
Rhode Island offers full retail net metering. The Distributed Generation Standard Contract (DGSC) provides an additional per-kWh incentive for qualifying systems through National Grid.
Rhode Island Solar Incentives
Available in addition to any utility rebates. Federal 25D credit is $0 for homeowner-owned systems from 2026.
- ✓DGSC incentive program (~$0.02–$0.05/kWh for 15 years)
- ✓Property tax exemption (by municipality)
- ✓Sales tax exemption
Top Utilities in Rhode Island
Interconnection timeline: 5–10 weeks
State-specific decision guide
What to verify before signing a Rhode Island solar quote
In Rhode Island, the financial result depends on more than sunshine or the headline installation price. Confirm the export rule, program eligibility date, and interconnection timeline for your exact utility before treating a payback estimate as a promise.
Export value
This page models full retail net metering. Ask which tariff and export credit apply to your account, not only which program name appears in the proposal.
Incentive eligibility
Check equipment, income, installer, application, and placed-in-service rules before subtracting an incentive from the quote. Programs can close or change terms.
Interconnection
Budget for the published 5–10 weeks and confirm who pays for a required meter, service upgrade, or engineering review.
Source trail: production assumptions use NREL PVWatts; incentive discovery should be checked against DSIRE; electricity-market context is available from the EIA. Confirm final tax treatment with the IRS and your utility.
Calculate your Rhode Island solar economics
Our calculators are pre-filled with Rhode Island data. Run any tool below.