Tolland County, CT solar installation & market data
Updated November 5, 2024Older data · growth withheld By The SolarDNA Data Team
Tolland County has 643 solar installations across 3 zip codes at a median installed cost of $3.71/W, recent growth not yet measurable, and an installs-weighted Market Score of 46.
Active installations
643
Zip markets
3
Median cost
$3.71/W
12-mo growth
—
Installers active
46
County Market Score
Great · installs-weighted across 3 zips
Best zip in Tolland County scores higher than 76% of U.S. zip markets.
Versus Connecticut
How Tolland County compares with the state
Installed cost
$0.08/W below
state median $3.79/W
Market score
46 vs 51
Connecticut scores 51
Share of state installs
1.28%
of 50.1K tracked statewide
Battery attach
1.2%
state 0.4%
Statewide momentum
▼ 5.6%
residential solar added in Connecticut, 12 months through Jul 2026
Statewide market
128.1K systems
13.6% of homes · utility-reported through Jul 2026
Growth & pricing
Tolland County by year
11 installs in the trailing twelve months vs 4 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Tolland County
Summed across every zip in the county
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | TRINITY SOLAR | 155 | 0 | 3 | $3.37 |
| 2 | TESLA | 109 | 0 | 3 | $5.25 |
| 3 | EARTHLIGHT TECHNOLOGIES | 75 | 1 | 3 | $3.69 |
| 4 | SUNRUN | 53 | 0 | 3 | $2.52 |
| 5 | CTEC SOLAR | 42 | 0 | 3 | $3.83 |
| 6 | SUNPOWER | 35 | 0 | 3 | $3.67 |
| 7 | SUNLIGHT SOLAR ENERGY | 32 | 0 | 3 | $7.20 |
| 8 | ROOF DIAGNOSTICS SOLAR | 16 | 0 | 3 | $3.41 |
| 9 | POSIGEN | 15 | 0 | 3 | $4.34 |
| 10 | MOMENTUM SOLAR | 11 | 0 | 3 | $3.03 |
| 11 | JD SOLAR SOLUTIONS | 10 | 0 | 2 | $3.56 |
| 12 | SUNGEVITY | 9 | 0 | 3 | $4.14 |
| 13 | SUMMER HILL SOLAR | 9 | 0 | 3 | $4.08 |
| 14 | ROSS SOLAR GROUP | 9 | 0 | 3 | $4.39 |
| 15 | GM INDUSTRIES | 7 | 0 | 3 | $5.25 |
| 16 | RGS ENERGY | 6 | 0 | 3 | $7.14 |
| 17 | AEGIS ELECTRIC SYSTEMS | 4 | 0 | 3 | $3.11 |
| 18 | SHIPPEE SOLAR CONSTRUCTION | 4 | 0 | 1 | $3.00 |
| 19 | VENTURE HOME SOLAR | 4 | 0 | 2 | $4.09 |
| 20 | EASTERN CT SOLAR | 3 | 0 | 2 | $4.38 |
| 21 | ECOSMART HOME SERVICES | 3 | 0 | 1 | $3.43 |
| 22 | EDF RENEWABLE ENERGY | 3 | 0 | 2 | $8.52 |
| 23 | AKEENA SOLAR | 3 | 0 | 1 | $9.24 |
| 24 | HARNESS THE SUN | 2 | 0 | 2 | $6.05 |
| 25 | 31SOLAR | 2 | 0 | 1 | $4.29 |