
Solar Panel Cost in Rhode Island
Updated 2026 guide to solar panel prices, savings, and payback period in Rhode Island.
Estimated Solar Savings
Solar Panel System Costs in Rhode Island
Below are estimated costs for different solar panel system sizes in Rhode Island, including the 30% federal solar tax credit.
| System Size | Cost Before Incentives | Federal Tax Credit (30%) | Net Cost | Est. Annual Production |
|---|---|---|---|---|
| 4 kW | $12,400 | -$3,720 | $8,680 | 5,548 kWh |
| 6 kWMost Popular | $18,600 | -$5,580 | $13,020 | 8,322 kWh |
| 8 kW | $24,800 | -$7,440 | $17,360 | 11,096 kWh |
| 10 kW | $31,000 | -$9,300 | $21,700 | 13,870 kWh |
| 12 kW | $37,200 | -$11,160 | $26,040 | 16,644 kWh |
What Affects Solar Panel Cost in Rhode Island?
The average cost of solar panels in Rhode Island is $310/watt before incentives. For a typical 6kW residential system, that means a total cost of about $18,600 before the federal tax credit.
After applying the 30% federal Investment Tax Credit (ITC), your net cost drops to approximately $13,020.Rhode Island homeowners typically see a payback period of 7 years and save an estimated $36,000 over 25 years.
Rhode Island solar costs have dropped roughly 41% over the past decade. The Renewable Energy Growth program and high electricity rates make solar an excellent value.
Factors that affect your cost:
- System size: Larger systems cost more but have a lower cost per watt
- Equipment quality: Premium panels and inverters cost more but offer better efficiency
- Roof complexity: Steep roofs, multiple levels, or shading can increase installation costs
- Local labor rates: Installation costs vary by region within Rhode Island
- Incentives: State and local programs can significantly reduce your out-of-pocket cost

Solar Incentives in Rhode Island
Federal Solar Investment Tax Credit
30% Federal Tax Credit (ITC)
Rhode Island homeowners can combine the 30% federal ITC with the state's Renewable Energy Growth program for excellent returns.
State & Local Incentives
Renewable Energy Growth (REG) Program
RebateRhode Island's REG program provides fixed per-kWh payments for solar energy production over 15-20 years.
Rhode Island Renewable Energy Fund Incentive
RebateAdditional rebates available through the RI Renewable Energy Fund for residential solar installations.
Sales Tax Exemption
Sales TaxSolar energy equipment is exempt from Rhode Island's 7% sales tax.
Property Tax Exemption
Property TaxRhode Island exempts solar energy systems from local property taxes.
Net Metering
Rhode Island offers net metering at the full retail rate for residential solar systems. The state also has a virtual net metering program for community solar.
AvailableSRECs
Rhode Island's Renewable Energy Growth program provides a form of production-based incentive similar to SRECs, with fixed payments for solar production.
Est. Value: Fixed REG program rates
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Solar Panel Cost FAQ - Rhode Island
The cost of solar panels in Rhode Island typically ranges from $2.50 to $3.50 per watt before incentives. For a standard 6 kW residential system, homeowners in Rhode Island can expect to pay between $15,000 and $21,000 before the federal tax credit. After applying the 30% federal Investment Tax Credit, the net cost drops to approximately $10,500-$14,700. Actual costs vary based on your specific roof, chosen equipment, and installer. We recommend getting at least three quotes from local Rhode Island solar installers to find the best price.
The average solar payback period in Rhode Island depends on local electricity rates, available incentives, and sun exposure. Most Rhode Island homeowners see a payback period between 6 and 10 years. After the payback period, you essentially enjoy free electricity for the remaining 15-20+ years of your system's life. Higher local electricity rates and additional state incentives can shorten the payback period significantly. A qualified Rhode Island solar installer can calculate your specific payback period based on your energy usage and roof characteristics.
Rhode Island homeowners who install solar panels typically save between $20,000 and $50,000 over 25 years, depending on system size, electricity rates, and available incentives. These savings come from reduced or eliminated electricity bills, net metering credits, and any applicable SREC income. As electricity rates in Rhode Island continue to rise (historically averaging 2-3% annually), your savings grow each year. The combination of the 30% federal tax credit and any Rhode Island-specific incentives helps maximize your return on investment.
The right solar system size for your Rhode Island home depends on your electricity consumption, roof space, and budget. The average Rhode Island home uses approximately 10,000-11,000 kWh per year, which typically requires a 6-8 kW solar system. To determine your ideal size, review your annual electricity usage on recent utility bills. Factors like Rhode Island's average peak sun hours, your roof orientation, and any shading will affect how many panels you need. A professional Rhode Island solar installer will use satellite imagery and your usage data to recommend the optimal system size.
Yes, solar is generally worth the investment for Rhode Island homeowners in 2025. With solar panel costs at historic lows, the 30% federal tax credit still available, and electricity rates continuing to rise, the financial case for solar in Rhode Island is strong. Most Rhode Island homeowners who go solar see positive returns within 6-10 years, followed by 15-20+ years of significant savings. Additionally, solar panels increase your home value, provide energy independence, and protect against future electricity rate increases. The best way to determine if solar is right for your Rhode Island home is to get a free, customized quote from a qualified local installer.
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