Solar panels in Brockton, MA
Roofs in Brockton get about 1,269 hours of usable sunlight a year — less than 96% 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 Brockton → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Brockton solar system costs
A 26-panel system (10.4 kW) is about right for an average Brockton home using 10,800 kWh a year. It would produce roughly 11,218 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 3,452 | $6,384 | $1,039 | 6.1 yrs |
| 12 panels | 4.8 kW | 5,178 | $9,576 | $1,558 | 6.1 yrs |
| 16 panels | 6.4 kW | 6,903 | $12,768 | $2,078 | 6.1 yrs |
| 20 panels | 8 kW | 8,629 | $15,960 | $2,597 | 6.1 yrs |
| 26 panels | 10.4 kW | 11,218 | $20,748 | $3,282 | 6.3 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 Brockton gets 1,269 sun hours
That figure comes from Google's analysis of real rooftops across Brockton — 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 Brockton reaches about 1,446 hours, roughly 14% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,269 hrs/yr |
|---|---|
| Unshaded roof | 1,446 hrs/yr |
| Electricity rate (Massachusetts avg) | 30.1¢/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 | 34% |
| Paid for exported power | full retail (net metering) |
| Rooftops sampled here | 14 |
| Google imagery from | 2022 |
Nearby cities
See all of Massachusetts → statewide sunlight, rates, incentives and every city we've measured.
Brockton solar questions
How many solar panels do I need in Brockton?
About 26 panels for an average home. Brockton roofs get 1,269 usable sun hours a year, so each 400W panel produces roughly 431 kWh annually.
Is solar worth it in Brockton?
At 30.1¢/kWh and 1,269 sun hours, a typical system pays for itself in about 6.3 years and returns roughly $61,308 over 25 years. That is a solid return.
How much do solar panels cost in Brockton?
A 10.4 kW system costs about $29,640 before incentives and $20,748 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 Massachusetts 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.