Porterville, CA 93257 solar market data
Updated May 5, 2026 By The SolarDNA Data Team
Porterville 93257 has 6,050 solar installations at a median installed cost of $4.31/W, installations up 19.2% over the trailing twelve months, and a Market Score of 53 — higher than 96% of U.S. zip markets.
Zip Market Score
Excellent · higher than 96% of zips
Versus California
How 93257 compares with the state
Installed cost
$0.04/W above
state median $4.26/W
Market score
53 vs 53
California scores 53
Share of state installs
0.27%
of 2.3M tracked statewide
Battery attach
17.1%
state 12.7%
Statewide momentum
▲ 1.1%
residential solar added in California, 12 months through Jul 2026
Statewide market
2.3M systems
30.9% of homes · utility-reported through Jul 2026
Next-12-month outlook: 644–788 installs (midpoint 716)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±10% band. Not a forecast of permits or policy.
Growth & pricing
93257 by year
653 installs in the trailing twelve months vs 548 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 93257
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 1,128 | 131 | 9.07 | $4.07 |
| 2 | TESLA | 627 | 3 | 9.01 | $5.12 |
| 3 | SUNPOWER | 245 | 0 | 25.22 | $4.25 |
| 4 | FREEDOM FOREVER | 212 | 35 | 8.72 | $4.12 |
| 5 | BRIGHT OPS | 209 | 53 | 7.07 | $4.81 |
| 6 | BRIGHT HOUSE ENERGY | 182 | 0 | 12.5 | $2.82 |
| 7 | LIFESTYLE SOLAR | 180 | 121 | 5.03 | $3.21 |
| 8 | ESP CONTRACTING | 132 | 0 | 7.58 | $3.82 |
| 9 | DIVINE POWER USA | 115 | 55 | 5.59 | $3.44 |
| 10 | SOLGEN CONSTRUCTION | 114 | 0 | 7.68 | $5.68 |
| 11 | INFINITY ENERGY | 96 | 0 | 8.2 | $5.32 |
| 12 | ABUNDANT ENERGY CONSTRUCTION | 85 | 0 | 7.79 | $3.00 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 93267 Strathmore | 9.7 km | 313 | $4.29 | 40 |
| 93270 Terra Bella | 12.4 km | 282 | $4.45 | 39 |
| 93247 Lindsay | 16.5 km | 1,212 | $4.38 | 43 |
| 93218 Ducor | 19.7 km | 70 | $4.76 | 36 |
| 93265 Springville | 22.4 km | 446 | $3.98 | 42 |
| 93256 Pixley | 23.8 km | 250 | $4.57 | 38 |
Same city
Other zips in Porterville
Equipment
What gets installed in 93257
Share of systems with a recorded brand
Modules
QCELLS NORTH AMERICA20.3%
CSI SOLAR11.0%
LONGI GREEN ENERGY TECHNOLOGY9.5%
SUNPOWER8.5%
TRINA SOLAR6.0%
Inverters
SOLAREDGE34.7%
ENPHASE ENERGY33.0%
ABB6.2%
SUNPOWER5.9%
TESLA4.1%
Frequently asked
Quick answers about 93257
How many solar installations are there in 93257?
SolarDNA counts 6,050 active solar installations in Porterville 93257, 5,881 of them residential, with data through May 5, 2026.
How much does solar cost in 93257?
The median residential system in 93257 cost $4.31 per watt over the trailing twelve months, $0.04/W above the California median.
Is solar growing in 93257?
Installations in 93257 are up 19.2%: 653 in the trailing twelve months versus 548 before.
Who installs solar in 93257?
SUNRUN, TESLA, SUNPOWER lead the 338 installers with systems in 93257. The full comp set is above.
Is 93257 a good market for solar sales?
93257 scores 53 out of 100 (Excellent, higher than 96% of U.S. zip markets).