Solar panels in Montpelier, VT
Roofs in Montpelier get about 1,328 hours of usable sunlight a year — less than 91% 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 Montpelier → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Montpelier solar system costs
A 24-panel system (9.6 kW) is about right for an average Montpelier home using 10,800 kWh a year. It would produce roughly 10,836 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 3,612 | $6,384 | $798 | 8 yrs |
| 12 panels | 4.8 kW | 5,418 | $9,576 | $1,197 | 8 yrs |
| 16 panels | 6.4 kW | 7,224 | $12,768 | $1,597 | 8 yrs |
| 20 panels | 8 kW | 9,030 | $15,960 | $1,996 | 8 yrs |
| 26 panels | 10.4 kW | 11,740 | $20,748 | $2,439 | 8.5 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 Montpelier gets 1,328 sun hours
That figure comes from Google's analysis of real rooftops across Montpelier — 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 Montpelier reaches about 1,437 hours, roughly 8% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,328 hrs/yr |
|---|---|
| Unshaded roof | 1,437 hrs/yr |
| Electricity rate (Vermont avg) | 22.1¢/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 | 12 |
| Google imagery from | 2024 |
When Montpelier actually produces
Annual totals hide the thing that catches people out: 38% of Montpelier's yearly sunlight arrives in May–July, and just 12% across November–January.
| Month | Sun hrs | Share of year |
|---|---|---|
| Jan | 52 | |
| Feb | 75 | |
| Mar | 105 | |
| Apr | 139 | |
| May | 163 | |
| Jun | 173 | |
| Jul | 168 | |
| Aug | 148 | |
| Sep | 117 | |
| Oct | 84 | |
| Nov | 57 | |
| Dec | 46 |
Montpelier produces about 3.8× 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 Montpelier's latitude, not separately measured, so treat the monthly figures as the shape of a typical year rather than a forecast.
Cities with almost the same sunlight
These are the closest matches to Montpelier's 1,328 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 |
|---|---|---|---|
| Scranton, PA | 1,327 | 18.1¢ | 9.8 yrs |
| Presque Isle, ME | 1,329 | 24.8¢ | 7.1 yrs |
| Levis, QC | 1,326 | 7.9¢ | 32.1 yrs |
| Manchester, NH | 1,331 | 25.3¢ | 7 yrs |
Nearby cities
See all of Vermont → statewide sunlight, rates, incentives and every city we've measured.
Montpelier solar questions
How many solar panels do I need in Montpelier?
About 24 panels for an average home using 10,800 kWh a year. Montpelier roofs get 1,328 usable sun hours, so each 400W panel produces roughly 452 kWh annually. A typical Montpelier roof fits about 45 panels, so check your usable roof area before assuming that many will fit.
Is solar worth it in Montpelier?
At 22.1¢/kWh and 1,328 sun hours, a typical system pays for itself in about 8 years and returns roughly $40,568 over a 25-year panel life. That is a solid return, and it improves further if electricity prices rise. Exported power earns full retail credit here.
How much do solar panels cost in Montpelier?
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 Vermont 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.