Solar panels in Maryland
Roofs across Maryland get about 1,481 hours of usable sunlight a year, and electricity costs 18.3¢/kWh. That combination puts a typical system's payback at 8.8 years. Here's the detail, from real rooftop data across 10 Maryland cities.
Check your own roof in Maryland → These are regional figures; your roof's size, pitch and shading move them a lot.
How Maryland compares
Maryland gets more sunlight than 47% of the cities we measure, and its electricity costs more than 63% of states and provinces. Both matter, but not equally: the electricity rate usually matters more, because solar saves money by replacing power you would otherwise buy. A sunny state with cheap power often pays back slower than a cloudy state with expensive power. Why that happens →
Solar by city in Maryland
| City | Sun hrs/yr | Panels | Net cost | Payback |
|---|---|---|---|---|
| Salisbury | 1,559 | 21 | $16,758 | 8.4 yrs |
| Frederick | 1,555 | 21 | $16,758 | 8.4 yrs |
| Gaithersburg | 1,516 | 21 | $16,758 | 8.5 yrs |
| Columbia | 1,505 | 22 | $17,556 | 8.8 yrs |
| Silver Spring | 1,481 | 22 | $17,556 | 8.8 yrs |
| Baltimore County | 1,468 | 22 | $17,556 | 8.8 yrs |
| Baltimore | 1,467 | 22 | $17,556 | 8.8 yrs |
| Cumberland | 1,462 | 22 | $17,556 | 8.9 yrs |
| Rockville | 1,453 | 22 | $17,556 | 8.9 yrs |
| Annapolis | 1,419 | 23 | $18,354 | 9.2 yrs |
What a system costs in Maryland
| 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 |
Payback stops improving as systems grow, then gets worse. You can only save on electricity you were going to buy, so once a system covers your usage the extra panels mostly export at a lower rate.
Maryland solar incentives
Every US household can claim the 30% federal residential clean energy credit, which is what the "after credit" figures above assume. On a $25,080 system that is $7,524 back. How the credit works →
State, utility and municipal incentives stack on top and change often — Maryland may offer rebates, property or sales tax exemptions, or performance payments. We deliberately don't list specific state programmes here because they change several times a year and stale numbers are worse than none. The DSIRE database is the standard reference and is kept current.
Maryland solar questions
Is solar worth it in Maryland?
At 18.3¢/kWh and 1,481 usable sun hours, a typical Maryland system pays back in about 8.8 years and returns roughly $32,172 across a 25-year panel life. That is a solid return, and rising electricity prices only improve it. Individual cities in Maryland vary widely around this average.
How many solar panels do I need in Maryland?
About 22 panels for a home using 10,800 kWh a year. Each 400W panel produces roughly 504 kWh annually at Maryland sunlight levels. Your own figure depends on actual usage — pull a year of bills rather than assuming average consumption, since heating and EV charging change it a lot.
How much do solar panels cost in Maryland?
A 8.8 kW system runs about $25,080 before incentives and $17,556 after the 30% federal credit, or roughly $2.85 per watt installed. Quotes vary widely by installer, roof complexity and whether your electrical panel needs upgrading — get three before deciding.
Worth reading before you buy
Regional estimates generated 2026-08-22 from Google Solar API rooftop samples across 10 Maryland cities, and average Maryland electricity rates. Not a quote and not financial or tax advice.