Gaithersburg, MD 20878 solar market data
Updated December 29, 2022Older data · growth withheldProvisional score · under 500 installs By The SolarDNA Data Team
Gaithersburg 20878 has 97 solar installations at a median installed cost of $2.85/W, recent growth not yet measurable, and a Market Score of 55 — higher than 98% of U.S. zip markets.
Zip Market Score
Excellent · higher than 98% of zips
Versus Maryland
How 20878 compares with the state
Installed cost
$0.86/W below
state median $3.71/W
Market score
55 vs 68
Maryland scores 68
Share of state installs
0.31%
of 31.5K tracked statewide
Battery attach
0.0%
state 0.0%
Statewide momentum
▲ 35.7%
residential solar added in Maryland, 12 months through Jul 2026
Statewide market
127.7K systems
7.8% of homes · utility-reported through Jul 2026
Growth & pricing
20878 by year
50 installs in the trailing twelve months vs 47 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 20878
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| No installer has recorded systems here yet. | |||||
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 20874 Germantown | 3.7 km | 57 | $3.53 | 51 |
| 20877 Gaithersburg | 6.3 km | 26 | $3.88 | 50 |
| 20850 Rockville | 7.7 km | 63 | $2.80 | 55 |
| 20876 Germantown | 8.5 km | 54 | $3.45 | 52 |
| 20879 Gaithersburg | 8.8 km | 39 | $3.75 | 50 |
| 20886 Montgomery Village | 8.9 km | 30 | $3.97 | 49 |
Same city
Other zips in Gaithersburg
Frequently asked
Quick answers about 20878
How many solar installations are there in 20878?
SolarDNA counts 97 active solar installations in Gaithersburg 20878, 97 of them residential, with data through December 29, 2022.
How much does solar cost in 20878?
The median residential system in 20878 cost $2.85 per watt over the trailing twelve months, $0.86/W below the Maryland median.
Is solar growing in 20878?
Recent growth cannot be measured yet for 20878: insufficient recent data (data runs through December 29, 2022).
Who installs solar in 20878?
No installer has enough recorded systems in 20878 to rank yet.
Is 20878 a good market for solar sales?
20878 scores 55 out of 100 (Excellent, higher than 98% of U.S. zip markets). With under 500 installations the score is provisional.