Solar panels in Warwick, RI
Roofs in Warwick get about 1,518 hours of usable sunlight a year — less than 55% of the cities we've measured. Here's what that means in cost, savings and payback, using real rooftop data rather than a national average.
Check your specific roof in Warwick → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Warwick solar system costs
A 21-panel system (8.4 kW) is about right for an average Warwick home using 10,800 kWh a year. It would produce roughly 10,839 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,129 | $6,384 | $1,168 | 5.5 yrs |
| 12 panels | 4.8 kW | 6,193 | $9,576 | $1,753 | 5.5 yrs |
| 16 panels | 6.4 kW | 8,258 | $12,768 | $2,337 | 5.5 yrs |
| 20 panels | 8 kW | 10,322 | $15,960 | $2,921 | 5.5 yrs |
| 26 panels | 10.4 kW | 13,419 | $20,748 | $3,242 | 6.4 yrs |
Notice that payback barely improves as systems get bigger, and eventually gets worse. That's because you can only save money on electricity you were going to buy anyway. Once a system covers your usage, extra panels mostly generate exports at a much lower rate.
Why Warwick gets 1,518 sun hours
That figure comes from Google's analysis of real rooftops across Warwick — it already accounts for shading from trees, chimneys and neighbouring buildings, which is why it's lower than the raw "hours of daylight" figures you'll see elsewhere. An unusually open, unshaded roof in Warwick reaches about 1,586 hours, roughly 4% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,518 hrs/yr |
|---|---|
| Unshaded roof | 1,586 hrs/yr |
| Electricity rate (Rhode Island avg) | 28.3¢/kWh |
| Installed cost assumed | $2.85/W |
| Panel size assumed | 400 W |
| Federal tax credit | 30% |
| Typical household usage | 10,800 kWh/yr |
| Power used as generated | 35% |
| Paid for exported power | full retail (net metering) |
| Rooftops sampled here | 12 |
| Google imagery from | 2023 |
Nearby cities
See all of Rhode Island → statewide sunlight, rates, incentives and every city we've measured.
Warwick solar questions
How many solar panels do I need in Warwick?
About 21 panels for an average home. Warwick roofs get 1,518 usable sun hours a year, so each 400W panel produces roughly 516 kWh annually.
Is solar worth it in Warwick?
At 28.3¢/kWh and 1,518 sun hours, a typical system pays for itself in about 5.5 years and returns roughly $59,720 over 25 years. That is a solid return.
How much do solar panels cost in Warwick?
A 8.4 kW system costs about $23,940 before incentives and $16,758 after the 30% federal tax credit. Prices vary by installer, roof complexity and equipment.
Worth reading before you buy
Estimates only, generated 2026-08-22 from Google Solar API rooftop samples and average Rhode Island electricity rates. Not a quote and not financial advice. Your roof, usage, utility plan and local incentives will change these numbers — get real quotes before buying.