Solar panels in New Haven, CT
Roofs in New Haven get about 1,472 hours of usable sunlight a year — less than 54% 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 New Haven → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical New Haven solar system costs
A 22-panel system (8.8 kW) is about right for an average New Haven home using 10,800 kWh a year. It would produce roughly 11,011 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,004 | $6,384 | $1,169 | 5.5 yrs |
| 12 panels | 4.8 kW | 6,006 | $9,576 | $1,754 | 5.5 yrs |
| 16 panels | 6.4 kW | 8,008 | $12,768 | $2,338 | 5.5 yrs |
| 20 panels | 8 kW | 10,010 | $15,960 | $2,923 | 5.5 yrs |
| 26 panels | 10.4 kW | 13,012 | $20,748 | $3,315 | 6.3 yrs |
How we worked this out for New Haven
Every number on this page comes from these seven steps. Nothing is a national average — the sunlight figure is measured from New Haven rooftops.
| # | Step | Result |
|---|---|---|
| 1 | What one panel makes here 400W ÷ 1000 × 1,472 sun hrs × 0.85 system losses |
500 kWh/yr |
| 2 | Panels needed to cover typical usage 10,800 kWh ÷ 500 kWh per panel |
22 panels |
| 3 | System size 22 panels × 400W |
8.80 kW |
| 4 | Annual production 8.80 kW × 1,472 hrs × 0.85 |
11,011 kWh/yr |
| 5 | Installed cost 8,800 W × $2.85 per watt, then −30% federal credit |
$17,556 |
| 6 | Annual saving 3,780 kWh used as generated × 29.2¢ + 7,231 kWh exported × 29.2¢ |
$3,169/yr |
| 7 | Payback $17,556 ÷ $3,169 per year |
5.5 years |
Step 6 matters more than it looks. Only 34% of what a system this size produces in New Haven is used the moment it is generated; the other 7,231 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 — 5.5 years against the 5.5 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, 29.2¢/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 New Haven gets 1,472 sun hours
That figure comes from Google's analysis of real rooftops across New Haven — 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 New Haven reaches about 1,521 hours, roughly 3% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,472 hrs/yr |
|---|---|
| Unshaded roof | 1,521 hrs/yr |
| Electricity rate (Connecticut avg) | 29.2¢/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 | 12 |
| Google imagery from | 2024 |
When New Haven actually produces
Annual totals hide the thing that catches people out: 37% of New Haven's yearly sunlight arrives in May–July, and just 13% across November–January.
| Month | Sun hrs | Share of year |
|---|---|---|
| Jan | 64 | |
| Feb | 87 | |
| Mar | 118 | |
| Apr | 151 | |
| May | 175 | |
| Jun | 184 | |
| Jul | 179 | |
| Aug | 160 | |
| Sep | 130 | |
| Oct | 96 | |
| Nov | 69 | |
| Dec | 57 |
New Haven produces about 3.2× 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 New Haven's latitude, not separately measured, so treat the monthly figures as the shape of a typical year rather than a forecast.
How New Haven compares to the other 788 cities
| Measure | New Haven | Rank of 788 |
|---|---|---|
| Usable sunlight | 1,472 hrs | 425th |
| Sunlight lost to shade | 3% | 613th most |
| Median roof size | 142 m² | 583rd largest |
| Electricity rate | 29.2¢ | 89th highest |
| Payback | 5.5 yrs | 8th fastest |
| Grid carbon | 445 kg/MWh | 623rd dirtiest |
What actually stands out about New Haven:
- Expensive electricity works in your favour. At 29.2¢/kWh, Connecticut is among the priciest places to buy power — which is exactly what makes generating your own pay back faster.
Cities with almost the same sunlight
These are the closest matches to New Haven's 1,472 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 |
|---|---|---|---|
| Davenport, IA | 1,472 | 13.2¢ | 12.3 yrs |
| Jersey City, NJ | 1,473 | 19.4¢ | 8.3 yrs |
| Toms River, NJ | 1,471 | 19.4¢ | 8.3 yrs |
| Philadelphia, PA | 1,470 | 18.1¢ | 8.9 yrs |
Nearby cities
See all of Connecticut → statewide sunlight, rates, incentives and every city we've measured.
New Haven solar questions
How many solar panels do I need in New Haven?
About 22 panels for an average home using 10,800 kWh a year. New Haven roofs get 1,472 usable sun hours, so each 400W panel produces roughly 500 kWh annually. A typical New Haven roof fits about 42 panels, so check your usable roof area before assuming that many will fit.
Is solar worth it in New Haven?
At 29.2¢/kWh and 1,472 sun hours, a typical system pays for itself in about 5.5 years and returns roughly $61,668 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 New Haven?
A 8.8 kW system costs about $25,080 before incentives and $17,556 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 Connecticut 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.