Solar panels in El Centro, CA
Roofs in El Centro get about 1,973 hours of usable sunlight a year — more than 94% 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 El Centro → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical El Centro solar system costs
A 17-panel system (6.8 kW) is about right for an average El Centro home using 10,800 kWh a year. It would produce roughly 11,404 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 5,367 | $6,384 | $1,278 | 5 yrs |
| 12 panels | 4.8 kW | 8,050 | $9,576 | $1,446 | 6.6 yrs |
| 16 panels | 6.4 kW | 10,733 | $12,768 | $1,613 | 7.9 yrs |
| 20 panels | 8 kW | 13,416 | $15,960 | $1,781 | 9 yrs |
| 26 panels | 10.4 kW | 17,441 | $20,748 | $2,032 | 10.2 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 El Centro gets 1,973 sun hours
That figure comes from Google's analysis of real rooftops across El Centro — 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 El Centro reaches about 2,093 hours, roughly 6% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,973 hrs/yr |
|---|---|
| Unshaded roof | 2,093 hrs/yr |
| Electricity rate (California avg) | 31.2¢/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 | 33% |
| Paid for exported power | 20% of retail |
| Rooftops sampled here | 7 |
| Google imagery from | 2013 |
When El Centro actually produces
Annual totals hide the thing that catches people out: 33% of El Centro's yearly sunlight arrives in May–July, and just 16% across November–January.
| Month | Sun hrs | Share of year |
|---|---|---|
| Jan | 105 | |
| Feb | 131 | |
| Mar | 163 | |
| Apr | 194 | |
| May | 214 | |
| Jun | 222 | |
| Jul | 218 | |
| Aug | 202 | |
| Sep | 174 | |
| Oct | 140 | |
| Nov | 111 | |
| Dec | 98 |
Output is unusually steady — only about 2.3× between Jun and Dec. El Centro is close enough to the equator that seasonal variation is mild, which makes sizing a system considerably more predictable.
The annual total is measured from Google's rooftop imagery. Its split across months is calculated from solar geometry at El Centro's latitude, not separately measured, so treat the monthly figures as the shape of a typical year rather than a forecast.
How El Centro compares to the other 673 cities
| Measure | El Centro | Rank of 673 |
|---|---|---|
| Usable sunlight | 1,973 hrs | 40th |
| Sunlight lost to shade | 6% | 302nd most |
| Median roof size | 205 m² | 342nd largest |
| Electricity rate | 31.2¢ | 71st highest |
| Payback | 8.2 yrs | 115th fastest |
| Grid carbon | 631 kg/MWh | 438th dirtiest |
What actually stands out about El Centro:
- Plenty of roof to work with. Typical roofs here fit around 85 panels — roughly 5× what an average home needs. Roof size will not be what limits your system in El Centro.
- Expensive electricity works in your favour. At 31.2¢/kWh, California is among the priciest places to buy power — which is exactly what makes generating your own pay back faster.
- Older imagery. Google's aerial capture of El Centro dates from 2013. Tree growth and new construction since then are not reflected.
Cities with almost the same sunlight
These are the closest matches to El Centro's 1,973 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 |
|---|---|---|---|
| Santa Fe, NM | 1,977 | 14.8¢ | 8.4 yrs |
| Durango, CO | 1,978 | 14.8¢ | 8.4 yrs |
| Moab, UT | 1,967 | 11.2¢ | 11.1 yrs |
| Rio Rancho, NM | 1,965 | 14.8¢ | 8.4 yrs |
Nearby cities
See all of California → statewide sunlight, rates, incentives and every city we've measured.
El Centro solar questions
How many solar panels do I need in El Centro?
About 17 panels for an average home using 10,800 kWh a year. El Centro roofs get 1,973 usable sun hours, so each 400W panel produces roughly 671 kWh annually. A typical El Centro roof fits about 85 panels, so roof space is unlikely to be your limit.
Is solar worth it in El Centro?
At 31.2¢/kWh and 1,973 sun hours, a typical system pays for itself in about 8.2 years and returns roughly $27,811 over a 25-year panel life. That is a solid return, and it improves further if electricity prices rise. Exports earn only 20% of retail, so using power as you generate it matters.
How much do solar panels cost in El Centro?
A 6.8 kW system costs about $19,380 before incentives and $13,566 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 California 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.