Solar panels in New Rochelle, NY
Roofs in New Rochelle get about 1,478 hours of usable sunlight a year — less than 53% 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 Rochelle → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical New Rochelle solar system costs
A 22-panel system (8.8 kW) is about right for an average New Rochelle home using 10,800 kWh a year. It would produce roughly 11,055 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,020 | $6,384 | $977 | 6.5 yrs |
| 12 panels | 4.8 kW | 6,030 | $9,576 | $1,465 | 6.5 yrs |
| 16 panels | 6.4 kW | 8,040 | $12,768 | $1,954 | 6.5 yrs |
| 20 panels | 8 kW | 10,050 | $15,960 | $2,442 | 6.5 yrs |
| 26 panels | 10.4 kW | 13,066 | $20,748 | $2,762 | 7.5 yrs |
How we worked this out for New Rochelle
Every number on this page comes from these seven steps. Nothing is a national average — the sunlight figure is measured from New Rochelle rooftops.
| # | Step | Result |
|---|---|---|
| 1 | What one panel makes here 400W ÷ 1000 × 1,478 sun hrs × 0.85 system losses |
503 kWh/yr |
| 2 | Panels needed to cover typical usage 10,800 kWh ÷ 503 kWh per panel |
22 panels |
| 3 | System size 22 panels × 400W |
8.80 kW |
| 4 | Annual production 8.80 kW × 1,478 hrs × 0.85 |
11,055 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 × 24.3¢ + 7,275 kWh exported × 24.3¢ |
$2,640/yr |
| 7 | Payback $17,556 ÷ $2,640 per year |
6.7 years |
Step 6 matters more than it looks. Only 34% of what a system this size produces in New Rochelle is used the moment it is generated; the other 7,275 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 — 6.5 years against the 6.7 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, 24.3¢/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 Rochelle gets 1,478 sun hours
That figure comes from Google's analysis of real rooftops across New Rochelle — 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 Rochelle reaches about 1,565 hours, roughly 6% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,478 hrs/yr |
|---|---|
| Unshaded roof | 1,565 hrs/yr |
| Electricity rate (New York avg) | 24.3¢/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 | 11 |
| Google imagery from | 2024 |
When New Rochelle actually produces
Annual totals hide the thing that catches people out: 36% of New Rochelle's yearly sunlight arrives in May–July, and just 13% across November–January.
| Month | Sun hrs | Share of year |
|---|---|---|
| Jan | 65 | |
| Feb | 88 | |
| Mar | 119 | |
| Apr | 152 | |
| May | 175 | |
| Jun | 184 | |
| Jul | 179 | |
| Aug | 160 | |
| Sep | 131 | |
| Oct | 97 | |
| Nov | 70 | |
| Dec | 58 |
New Rochelle 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 Rochelle's latitude, not separately measured, so treat the monthly figures as the shape of a typical year rather than a forecast.
How New Rochelle compares to the other 788 cities
| Measure | New Rochelle | Rank of 788 |
|---|---|---|
| Usable sunlight | 1,478 hrs | 418th |
| Sunlight lost to shade | 6% | 354th most |
| Median roof size | 159 m² | 511th largest |
| Electricity rate | 24.3¢ | 233rd highest |
| Payback | 6.7 yrs | 30th fastest |
| Grid carbon | 482 kg/MWh | 493rd dirtiest |
What actually stands out about New Rochelle:
- Sunnier than the rest of New York. New Rochelle roofs get 8% more usable sunlight than the typical New York city we've measured — statewide averages will understate what you can expect here.
Cities with almost the same sunlight
These are the closest matches to New Rochelle's 1,478 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 |
|---|---|---|---|
| Marietta, GA | 1,477 | 14.1¢ | 11.5 yrs |
| Concord, NC | 1,479 | 13.2¢ | 12.2 yrs |
| Richmond, VA | 1,480 | 14.2¢ | 11.4 yrs |
| Silver Spring, MD | 1,481 | 18.3¢ | 8.8 yrs |
Nearby cities
See all of New York → statewide sunlight, rates, incentives and every city we've measured.
New Rochelle solar questions
How many solar panels do I need in New Rochelle?
About 22 panels for an average home using 10,800 kWh a year. New Rochelle roofs get 1,478 usable sun hours, so each 400W panel produces roughly 503 kWh annually. A typical New Rochelle roof fits about 40 panels, so check your usable roof area before assuming that many will fit.
Is solar worth it in New Rochelle?
At 24.3¢/kWh and 1,478 sun hours, a typical system pays for itself in about 6.7 years and returns roughly $48,442 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 Rochelle?
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 New York 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.