Solar panels in Grand Forks, ND
Roofs in Grand Forks get about 1,352 hours of usable sunlight a year — less than 76% 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 Grand Forks → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Grand Forks solar system costs
A 24-panel system (9.6 kW) is about right for an average Grand Forks home using 10,800 kWh a year. It would produce roughly 11,032 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 3,677 | $6,384 | $408 | 15.6 yrs |
| 12 panels | 4.8 kW | 5,516 | $9,576 | $612 | 15.6 yrs |
| 16 panels | 6.4 kW | 7,355 | $12,768 | $816 | 15.6 yrs |
| 20 panels | 8 kW | 9,194 | $15,960 | $1,020 | 15.6 yrs |
| 26 panels | 10.4 kW | 11,952 | $20,748 | $1,231 | 16.9 yrs |
How we worked this out for Grand Forks
Every number on this page comes from these seven steps. Nothing is a national average — the sunlight figure is measured from Grand Forks rooftops.
| # | Step | Result |
|---|---|---|
| 1 | What one panel makes here 400W ÷ 1000 × 1,352 sun hrs × 0.85 system losses |
460 kWh/yr |
| 2 | Panels needed to cover typical usage 10,800 kWh ÷ 460 kWh per panel |
24 panels |
| 3 | System size 24 panels × 400W |
9.60 kW |
| 4 | Annual production 9.60 kW × 1,352 hrs × 0.85 |
11,032 kWh/yr |
| 5 | Installed cost 9,600 W × $2.85 per watt, then −30% federal credit |
$19,152 |
| 6 | Annual saving 3,780 kWh used as generated × 11.1¢ + 7,252 kWh exported × 11.1¢ |
$1,205/yr |
| 7 | Payback $19,152 ÷ $1,205 per year |
15.9 years |
Step 6 matters more than it looks. Only 34% of what a system this size produces in Grand Forks is used the moment it is generated; the other 7,252 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 — 15.6 years against the 15.9 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, 11.1¢/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 Grand Forks gets 1,352 sun hours
That figure comes from Google's analysis of real rooftops across Grand Forks — 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 Grand Forks reaches about 1,482 hours, roughly 10% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,352 hrs/yr |
|---|---|
| Unshaded roof | 1,482 hrs/yr |
| Electricity rate (North Dakota avg) | 11.1¢/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 | 4 |
| Google imagery from | 2023 |
When Grand Forks actually produces
Annual totals hide the thing that catches people out: 40% of Grand Forks's yearly sunlight arrives in May–July, and just 10% across November–January.
| Month | Sun hrs | Share of year |
|---|---|---|
| Jan | 46 | |
| Feb | 71 | |
| Mar | 105 | |
| Apr | 144 | |
| May | 173 | |
| Jun | 186 | |
| Jul | 180 | |
| Aug | 155 | |
| Sep | 119 | |
| Oct | 81 | |
| Nov | 52 | |
| Dec | 40 |
That is a severe seasonal swing — Grand Forks produces roughly 4.7× as much in Jun as in Dec. A system sized to cover your annual usage will overproduce badly in summer and fall well short in winter, so how your utility credits exported power matters more here than in most places.
The annual total is measured from Google's rooftop imagery. Its split across months is calculated from solar geometry at Grand Forks's latitude, not separately measured, so treat the monthly figures as the shape of a typical year rather than a forecast.
How Grand Forks compares to the other 788 cities
| Measure | Grand Forks | Rank of 788 |
|---|---|---|
| Usable sunlight | 1,352 hrs | 598th |
| Sunlight lost to shade | 9% | 115th most |
| Median roof size | 250 m² | 212th largest |
| Electricity rate | 11.1¢ | 774th highest |
| Payback | 15.9 yrs | 739th fastest |
| Grid carbon | 832 kg/MWh | 104th dirtiest |
What actually stands out about Grand Forks:
- Every kWh counts more here. The grid serving Grand Forks emits 832 kg CO₂ per MWh, among the highest of the 788 cities measured — so the same panels displace more emissions than they would elsewhere.
- Dimmer than the rest of North Dakota. Grand Forks roofs get 10% less usable sunlight than the typical North Dakota city we've measured — statewide averages will overstate what you can expect here.
- Cheap electricity is the headwind. North Dakota power costs about 11.1¢/kWh. Low rates are good news generally, but they lengthen solar payback — there is simply less bill to displace.
Cities with almost the same sunlight
These are the closest matches to Grand Forks's 1,352 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 |
|---|---|---|---|
| Binghamton, NY | 1,352 | 24.3¢ | 7.3 yrs |
| York, PA | 1,353 | 18.1¢ | 9.7 yrs |
| Bemidji, MN | 1,351 | 14.8¢ | 11.9 yrs |
| Youngstown, OH | 1,354 | 15.2¢ | 11.6 yrs |
Nearby cities
See all of North Dakota → statewide sunlight, rates, incentives and every city we've measured.
Grand Forks solar questions
How many solar panels do I need in Grand Forks?
About 24 panels for an average home using 10,800 kWh a year. Grand Forks roofs get 1,352 usable sun hours, so each 400W panel produces roughly 460 kWh annually. A typical Grand Forks roof fits about 88 panels, so roof space is unlikely to be your limit.
Is solar worth it in Grand Forks?
At 11.1¢/kWh and 1,352 sun hours, a typical system pays for itself in about 15.9 years and returns roughly $10,979 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 Grand Forks?
A 9.6 kW system costs about $27,360 before incentives and $19,152 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 North Dakota 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.