Solar panels in Silver Spring, MD
Roofs in Silver Spring get about 1,481 hours of usable sunlight a year — less than 57% 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 Silver Spring → City averages are a starting point; your own roof's size, pitch and shading change the answer a lot.
What a typical Silver Spring solar system costs
A 22-panel system (8.8 kW) is about right for an average Silver Spring home using 10,800 kWh a year. It would produce roughly 11,078 kWh annually and offset 100% of that usage.
| System | Size | kWh/yr | Net cost | Saves/yr | Payback |
|---|---|---|---|---|---|
| 8 panels | 3.2 kW | 4,028 | $6,384 | $737 | 8.7 yrs |
| 12 panels | 4.8 kW | 6,042 | $9,576 | $1,106 | 8.7 yrs |
| 16 panels | 6.4 kW | 8,057 | $12,768 | $1,474 | 8.7 yrs |
| 20 panels | 8 kW | 10,071 | $15,960 | $1,843 | 8.7 yrs |
| 26 panels | 10.4 kW | 13,092 | $20,748 | $2,081 | 10 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 Silver Spring gets 1,481 sun hours
That figure comes from Google's analysis of real rooftops across Silver Spring — 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 Silver Spring reaches about 1,587 hours, roughly 7% better than typical.
The numbers behind this page
| Typical usable sunlight | 1,481 hrs/yr |
|---|---|
| Unshaded roof | 1,587 hrs/yr |
| Electricity rate (Maryland avg) | 18.3¢/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 | 15 |
| Google imagery from | 2018 |
Nearby cities
See all of Maryland → statewide sunlight, rates, incentives and every city we've measured.
Silver Spring solar questions
How many solar panels do I need in Silver Spring?
About 22 panels for an average home. Silver Spring roofs get 1,481 usable sun hours a year, so each 400W panel produces roughly 504 kWh annually.
Is solar worth it in Silver Spring?
At 18.3¢/kWh and 1,481 sun hours, a typical system pays for itself in about 8.8 years and returns roughly $32,172 over 25 years. That is a solid return.
How much do solar panels cost in Silver Spring?
A 8.8 kW system costs about $25,080 before incentives and $17,556 after the 30% federal tax credit. Prices vary by installer, roof complexity and equipment.
Worth reading before you buy
Estimates only, generated 2026-08-22 from Google Solar API rooftop samples and average Maryland 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.