Solar panels in Roseville, CA
Roofs in Roseville get about 1,712 hours of usable sunlight a year — more than 74% 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 Roseville → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Roseville solar system costs
A 19-panel system (7.6 kW) is about right for an average Roseville home using 10,800 kWh a year. It would produce roughly 11,060 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,657 | $6,384 | $1,234 | 5.2 yrs |
| 12 panels | 4.8 kW | 6,985 | $9,576 | $1,379 | 6.9 yrs |
| 16 panels | 6.4 kW | 9,313 | $12,768 | $1,525 | 8.4 yrs |
| 20 panels | 8 kW | 11,642 | $15,960 | $1,670 | 9.6 yrs |
| 26 panels | 10.4 kW | 15,134 | $20,748 | $1,888 | 11 yrs |
How we worked this out for Roseville
Every number on this page comes from these seven steps. Nothing is a national average — the sunlight figure is measured from Roseville rooftops.
| # | Step | Result |
|---|---|---|
| 1 | What one panel makes here 400W ÷ 1000 × 1,712 sun hrs × 0.85 system losses |
582 kWh/yr |
| 2 | Panels needed to cover typical usage 10,800 kWh ÷ 582 kWh per panel |
19 panels |
| 3 | System size 19 panels × 400W |
7.60 kW |
| 4 | Annual production 7.60 kW × 1,712 hrs × 0.85 |
11,060 kWh/yr |
| 5 | Installed cost 7,600 W × $2.85 per watt, then −30% federal credit |
$15,162 |
| 6 | Annual saving 3,780 kWh used as generated × 31.2¢ + 7,280 kWh exported × 6.2¢ |
$1,634/yr |
| 7 | Payback $15,162 ÷ $1,634 per year |
9.3 years |
Step 6 is where most calculators quietly overstate things. Only 34% of what a system this size produces in Roseville is used the moment it is generated; the other 7,280 kWh is exported and credited at 20% of retail under net billing. Valuing every kWh at the full 31.2¢ retail rate — which many calculators do — would show a payback of 4.4 years instead of the 9.3 we show. That 4.9-year difference is the single biggest reason our figures look worse than other sites' for Roseville.
Assumptions: 400W panels, 15% system losses (inverter, wiring, heat, soiling), $2.85/W installed, 10,800 kWh typical annual household use, 31.2¢/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 Roseville gets 1,712 sun hours
That figure comes from Google's analysis of real rooftops across Roseville — 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 Roseville reaches about 1,842 hours, roughly 8% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,712 hrs/yr |
|---|---|
| Unshaded roof | 1,842 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 | 34% |
| Paid for exported power | 20% of retail |
| Rooftops sampled here | 15 |
| Google imagery from | 2024 |
When Roseville actually produces
Annual totals hide the thing that catches people out: 35% of Roseville's yearly sunlight arrives in May–July, and just 14% across November–January.
| Month | Sun hrs | Share of year |
|---|---|---|
| Jan | 79 | |
| Feb | 106 | |
| Mar | 139 | |
| Apr | 174 | |
| May | 198 | |
| Jun | 207 | |
| Jul | 202 | |
| Aug | 183 | |
| Sep | 151 | |
| Oct | 115 | |
| Nov | 85 | |
| Dec | 72 |
Roseville produces about 2.9× 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 Roseville's latitude, not separately measured, so treat the monthly figures as the shape of a typical year rather than a forecast.
How Roseville compares to the other 788 cities
| Measure | Roseville | Rank of 788 |
|---|---|---|
| Usable sunlight | 1,712 hrs | 200th |
| Sunlight lost to shade | 7% | 207th most |
| Median roof size | 232 m² | 262nd largest |
| Electricity rate | 31.2¢ | 43rd highest |
| Payback | 9.3 yrs | 280th fastest |
| Grid carbon | 429 kg/MWh | 694th dirtiest |
What actually stands out about Roseville:
- Plenty of roof to work with. Typical roofs here fit around 82 panels — roughly 4× what an average home needs. Roof size will not be what limits your system in Roseville.
- The case here is financial, not environmental. Roseville's grid is already clean at 429 kg CO₂ per MWh, so the carbon saving from solar is modest. Judge this one on payback.
- Dimmer than the rest of California. Roseville roofs get 11% less usable sunlight than the typical California city we've measured — statewide averages will overstate what you can expect here.
- 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.
Cities with almost the same sunlight
These are the closest matches to Roseville's 1,712 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 |
|---|---|---|---|
| Sebring, FL | 1,712 | 15.3¢ | 9.1 yrs |
| Arlington, TX | 1,710 | 15.1¢ | 9.2 yrs |
| Denver, CO | 1,708 | 14.8¢ | 9.4 yrs |
| Hattiesburg, MS | 1,707 | 13.3¢ | 10.5 yrs |
Nearby cities
See all of California → statewide sunlight, rates, incentives and every city we've measured.
Roseville solar questions
How many solar panels do I need in Roseville?
About 19 panels for an average home using 10,800 kWh a year. Roseville roofs get 1,712 usable sun hours, so each 400W panel produces roughly 582 kWh annually. A typical Roseville roof fits about 82 panels, so roof space is unlikely to be your limit.
Is solar worth it in Roseville?
At 31.2¢/kWh and 1,712 sun hours, a typical system pays for itself in about 9.3 years and returns roughly $25,678 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 Roseville?
A 7.6 kW system costs about $21,660 before incentives and $15,162 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.