Millis, MA solar installation & market data
Updated June 19, 2023Older data · growth withheldProvisional score · under 500 installs By The SolarDNA Data Team
Millis has 207 solar installations across 1 zip code at a median installed cost of $3.94/W, recent growth not yet measurable, and an installs-weighted Market Score of 47.
Active installations
207
Zip markets
1
Median cost
$3.94/W
12-mo growth
—
Installers active
12
City Market Score
Great · installs-weighted across 1 zips
Best zip in Millis scores higher than 76% of U.S. zip markets.
Versus Massachusetts
How Millis compares with the state
Installed cost
$0.23/W below
state median $4.17/W
Market score
47 vs 58
Massachusetts scores 58
Share of state installs
0.15%
of 142.6K tracked statewide
Battery attach
2.4%
state 3.1%
Statewide momentum
▲ 22.8%
residential solar added in Massachusetts, 12 months through Jul 2026
Statewide market
233.7K systems
13.3% of homes · utility-reported through Jul 2026
Growth & pricing
Millis by year
23 installs in the trailing twelve months vs 32 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Millis
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 54 | 11 | 1 | $3.71 |
| 2 | TESLA | 24 | 1 | 1 | $5.15 |
| 3 | TRINITY SOLAR | 14 | 0 | 1 | $4.01 |
| 4 | SECOND GENERATION ENERGY | 11 | 0 | 1 | $3.19 |
| 5 | SOLARFLAIR ENERGY | 11 | 0 | 1 | $2.92 |
| 6 | SOLECT ENERGY | 7 | 0 | 1 | $2.83 |
| 7 | FREEDOM FOREVER | 6 | 0 | 1 | $3.82 |
| 8 | BOSTON SOLAR | 5 | 1 | 1 | $4.14 |
| 9 | DIRECT ENERGY SOLAR | 5 | 0 | 1 | $4.47 |
| 10 | MASS RENEWABLES | 5 | 0 | 1 | $4.01 |
| 11 | 1ST LIGHT ENERGY | 4 | 0 | 1 | $4.04 |
| 12 | ROOF DIAGNOSTICS SOLAR | 4 | 0 | 1 | $3.55 |
Zip markets
Zips in Millis
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 02054 | 207 | $3.94 | 47 B |