San Antonio, TX 78221 solar market data
Updated December 13, 2024Older data · growth withheld By The SolarDNA Data Team
San Antonio 78221 has 654 solar installations at a median installed cost of $4.00/W, recent growth not yet measurable, and a Market Score of 41 — higher than 38% of U.S. zip markets.
Versus Texas
How 78221 compares with the state
Installed cost
$0.10/W above
state median $3.90/W
Market score
41 vs 42
Texas scores 42
Share of state installs
0.29%
of 224.8K tracked statewide
Battery attach
1.7%
state 1.0%
Statewide momentum
▼ 23.4%
residential solar added in Texas, 12 months through Jul 2026
Statewide market
231.6K systems
3.4% of homes · utility-reported through Jul 2026
Growth & pricing
78221 by year
85 installs in the trailing twelve months vs 136 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 78221
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | GREENSTAR POWER | 87 | 16 | 8.36 | $4.00 |
| 2 | TRISMART SOLAR | 39 | 11 | 7.27 | $4.00 |
| 3 | FREEDOM FOREVER | 37 | 2 | 9.25 | $3.97 |
| 4 | SOLAR ELECTRIC TEXAS | 34 | 3 | 8.91 | $4.00 |
| 5 | CAM SOLAR | 27 | 0 | 8.44 | $3.12 |
| 6 | SOLAR EDGE PROS | 24 | 13 | 8.9 | $3.89 |
| 7 | ION SOLAR | 24 | 4 | 6.25 | $4.26 |
| 8 | FREEDOM SOLAR POWER TX | 23 | 4 | 8.74 | $4.34 |
| 9 | ERUS ENERGY | 23 | 0 | 6.95 | $4.00 |
| 10 | MOMENTUM SOLAR | 23 | 0 | 7.67 | $3.42 |
| 11 | GREEN LIGHT SOLAR TX | 21 | 0 | 9.63 | $4.00 |
| 12 | SOUTH TEXAS SOLAR SYSTEMS | 21 | 0 | 14.92 | $3.27 |
Equipment
What gets installed in 78221
Share of systems with a recorded brand
Modules
MISSION SOLAR ENERGY32.6%
QCELLS NORTH AMERICA11.6%
SILFAB SOLAR8.0%
APTOS SOLAR TECHNOLOGY4.9%
LG ELECTRONICS4.2%
Inverters
SOLAREDGE47.6%
ENPHASE ENERGY43.3%
SUNPOWER2.5%
SMA AMERICA2.2%
ALTENERGY POWER SYSTEM1.7%
Frequently asked
Quick answers about 78221
How many solar installations are there in 78221?
SolarDNA counts 654 active solar installations in San Antonio 78221, 647 of them residential, with data through December 13, 2024.
How much does solar cost in 78221?
The median residential system in 78221 cost $4.00 per watt over the trailing twelve months, $0.10/W above the Texas median.
Is solar growing in 78221?
Recent growth cannot be measured yet for 78221: insufficient recent data (data runs through December 13, 2024).
Who installs solar in 78221?
GREENSTAR POWER, TRISMART SOLAR, FREEDOM FOREVER lead the 88 installers with systems in 78221. The full comp set is above.
Is 78221 a good market for solar sales?
78221 scores 41 out of 100 (Good, higher than 38% of U.S. zip markets).