Solar panels in Harrisburg, PA
Roofs in Harrisburg get about 1,446 hours of usable sunlight a year — less than 70% 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 Harrisburg → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Harrisburg solar system costs
A 22-panel system (8.8 kW) is about right for an average Harrisburg home using 10,800 kWh a year. It would produce roughly 10,816 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 3,933 | $6,384 | $712 | 9 yrs |
| 12 panels | 4.8 kW | 5,900 | $9,576 | $1,068 | 9 yrs |
| 16 panels | 6.4 kW | 7,866 | $12,768 | $1,424 | 9 yrs |
| 20 panels | 8 kW | 9,833 | $15,960 | $1,780 | 9 yrs |
| 26 panels | 10.4 kW | 12,783 | $20,748 | $2,045 | 10.1 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 Harrisburg gets 1,446 sun hours
That figure comes from Google's analysis of real rooftops across Harrisburg — 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 Harrisburg reaches about 1,541 hours, roughly 7% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,446 hrs/yr |
|---|---|
| Unshaded roof | 1,541 hrs/yr |
| Electricity rate (Pennsylvania avg) | 18.1¢/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 | 35% |
| Paid for exported power | full retail (net metering) |
| Rooftops sampled here | 14 |
| Google imagery from | 2024 |
Nearby cities
See all of Pennsylvania → statewide sunlight, rates, incentives and every city we've measured.
Harrisburg solar questions
How many solar panels do I need in Harrisburg?
About 22 panels for an average home. Harrisburg roofs get 1,446 usable sun hours a year, so each 400W panel produces roughly 492 kWh annually.
Is solar worth it in Harrisburg?
At 18.1¢/kWh and 1,446 sun hours, a typical system pays for itself in about 9 years and returns roughly $31,332 over 25 years. That is a solid return.
How much do solar panels cost in Harrisburg?
A 8.8 kW system costs about $25,080 before incentives and $17,556 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 Pennsylvania 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.