Solar panels in State College, PA
Roofs in State College get about 1,201 hours of usable sunlight a year — less than 84% 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 State College → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical State College solar system costs
A 27-panel system (10.8 kW) is about right for an average State College home using 10,800 kWh a year. It would produce roughly 11,025 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 3,267 | $6,384 | $591 | 10.8 yrs |
| 12 panels | 4.8 kW | 4,900 | $9,576 | $887 | 10.8 yrs |
| 16 panels | 6.4 kW | 6,533 | $12,768 | $1,183 | 10.8 yrs |
| 20 panels | 8 kW | 8,167 | $15,960 | $1,478 | 10.8 yrs |
| 26 panels | 10.4 kW | 10,617 | $20,748 | $1,922 | 10.8 yrs |
How we worked this out for State College
Every number on this page comes from these seven steps. Nothing is a national average — the sunlight figure is measured from State College rooftops.
| # | Step | Result |
|---|---|---|
| 1 | What one panel makes here 400W ÷ 1000 × 1,201 sun hrs × 0.85 system losses |
408 kWh/yr |
| 2 | Panels needed to cover typical usage 10,800 kWh ÷ 408 kWh per panel |
27 panels |
| 3 | System size 27 panels × 400W |
10.80 kW |
| 4 | Annual production 10.80 kW × 1,201 hrs × 0.85 |
11,025 kWh/yr |
| 5 | Installed cost 10,800 W × $2.85 per watt, then −30% federal credit |
$21,546 |
| 6 | Annual saving 3,780 kWh used as generated × 18.1¢ + 7,245 kWh exported × 18.1¢ |
$1,965/yr |
| 7 | Payback $21,546 ÷ $1,965 per year |
11 years |
Step 6 matters more than it looks. Only 34% of what a system this size produces in State College is used the moment it is generated; the other 7,245 kWh is exported and credited one-for-one under net metering. Because exports here are credited at or near retail, that split changes the payback very little — 10.8 years against the 11 we show. In places where exports pay a fraction of retail the same split moves payback by years, which is why we model it explicitly rather than assuming.
Assumptions: 400W panels, 15% system losses (inverter, wiring, heat, soiling), $2.85/W installed, 10,800 kWh typical annual household use, 18.1¢/kWh electricity. Change any of those and every figure above moves — which is exactly why a single national "solar costs X" number is misleading.
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 State College gets 1,201 sun hours
That figure comes from Google's analysis of real rooftops across State College — 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 State College reaches about 1,511 hours, roughly 26% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,201 hrs/yr |
|---|---|
| Unshaded roof | 1,511 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 | 34% |
| Paid for exported power | full retail (net metering) |
| Rooftops sampled here | 7 |
| Google imagery from | 2020 |
When State College actually produces
Annual totals hide the thing that catches people out: 36% of State College's yearly sunlight arrives in May–July, and just 13% across November–January.
| Month | Sun hrs | Share of year |
|---|---|---|
| Jan | 53 | |
| Feb | 72 | |
| Mar | 97 | |
| Apr | 123 | |
| May | 142 | |
| Jun | 149 | |
| Jul | 145 | |
| Aug | 130 | |
| Sep | 106 | |
| Oct | 79 | |
| Nov | 57 | |
| Dec | 47 |
State College produces about 3.1× as much in Jun as in Dec — a normal mid-latitude swing. Expect real winter shortfall and summer surplus rather than steady year-round output.
The annual total is measured from Google's rooftop imagery. Its split across months is calculated from solar geometry at State College's latitude, not separately measured, so treat the monthly figures as the shape of a typical year rather than a forecast.
How State College compares to the other 788 cities
| Measure | State College | Rank of 788 |
|---|---|---|
| Usable sunlight | 1,201 hrs | 658th |
| Sunlight lost to shade | 21% | 1st most |
| Median roof size | 189 m² | 405th largest |
| Electricity rate | 18.1¢ | 304th highest |
| Payback | 11 yrs | 433rd fastest |
| Grid carbon | 654 kg/MWh | 337th dirtiest |
What actually stands out about State College:
- Shading is a real problem here. State College loses 21% of its potential sunlight to trees, chimneys and neighbouring buildings — the 1st-worst of the 788 cities measured. Panel placement matters more here than in most places, and a roof survey is worth more than a phone quote.
- Dimmer than the rest of Pennsylvania. State College roofs get 13% less usable sunlight than the typical Pennsylvania city we've measured — statewide averages will overstate what you can expect here.
- Older imagery. Google's aerial capture of State College dates from 2020. Tree growth and new construction since then are not reflected.
Cities with almost the same sunlight
These are the closest matches to State College's 1,201 usable sun hours from other states and provinces. Same sunlight, different electricity prices — which is usually what decides whether solar is worth it.
| City | Sun hrs | Rate | Payback |
|---|---|---|---|
| Tacoma, WA | 1,184 | 11.3¢ | 17.6 yrs |
| Bellingham, WA | 1,222 | 11.3¢ | 17 yrs |
| Bellevue, WA | 1,175 | 11.3¢ | 18.1 yrs |
| Kent, WA | 1,232 | 11.3¢ | 17 yrs |
Nearby cities
See all of Pennsylvania → statewide sunlight, rates, incentives and every city we've measured.
State College solar questions
How many solar panels do I need in State College?
About 27 panels for an average home using 10,800 kWh a year. State College roofs get 1,201 usable sun hours, so each 400W panel produces roughly 408 kWh annually. A typical State College roof fits about 52 panels, so check your usable roof area before assuming that many will fit.
Is solar worth it in State College?
At 18.1¢/kWh and 1,201 sun hours, a typical system pays for itself in about 11 years and returns roughly $27,579 over a 25-year panel life. That is slower than average, so compare several quotes before committing. Exported power earns full retail credit here.
How much do solar panels cost in State College?
A 10.8 kW system costs about $30,780 before incentives and $21,546 after the 30% federal tax credit. That works out near $2.85 per watt installed. Roof pitch, shading, electrical panel upgrades and equipment choice move the price most, which is why quotes for the same house can differ by thousands.
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.