La Mesa, CA 91941 solar market data
Updated March 23, 2026 By The SolarDNA Data Team
La Mesa 91941 has 4,820 solar installations at a median installed cost of $4.14/W, installations down 14.1% over the trailing twelve months, and a Market Score of 45 — higher than 69% of U.S. zip markets.
Versus California
How 91941 compares with the state
Installed cost
$0.12/W below
state median $4.26/W
Market score
45 vs 53
California scores 53
Share of state installs
0.21%
of 2.3M tracked statewide
Battery attach
6.3%
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: 163–199 installs (midpoint 181)
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
91941 by year
195 installs in the trailing twelve months vs 227 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 91941
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 574 | 30 | 5.86 | $4.58 |
| 2 | TESLA | 340 | 9 | 6.62 | $5.12 |
| 3 | SEMPER SOLARIS | 260 | 0 | 6.17 | $4.01 |
| 4 | BAKER ELECTRIC SOLAR | 255 | 0 | 7.28 | $4.30 |
| 5 | SULLIVAN SOLAR POWER | 181 | 0 | 7.35 | $4.24 |
| 6 | STELLAR SOLAR | 145 | 9 | 7.01 | $4.21 |
| 7 | SOLARTECH ENERGY SYSTEMS | 130 | 0 | 7.45 | $3.86 |
| 8 | BRIGHT PLANET SOLAR | 101 | 5 | 6.16 | $4.59 |
| 9 | SUNPOWER | 88 | 0 | 7.68 | $4.52 |
| 10 | SUNLINE ENERGY | 80 | 2 | 6.52 | $3.64 |
| 11 | ASI HEATING AIR | 72 | 0 | 6.19 | $3.70 |
| 12 | HOME ENERGY SYSTEMS | 72 | 0 | 6.42 | $3.83 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 91942 La Mesa | 2.7 km | 3,308 | $4.27 | 46 |
| 91945 Lemon Grove | 3.6 km | 2,658 | $4.49 | 40 |
| 91977 Spring Valley | 4.3 km | 6,527 | $4.40 | 39 |
| 92119 San Diego | 5.0 km | 3,511 | $4.19 | 46 |
| 92020 El Cajon | 5.5 km | 5,062 | $4.17 | 54 |
| 92115 San Diego | 5.7 km | 3,794 | $4.30 | 44 |
Same city
Other zips in La Mesa
Equipment
What gets installed in 91941
Share of systems with a recorded brand
Modules
LG ELECTRONICS17.1%
QCELLS NORTH AMERICA14.1%
SUNPOWER14.0%
SILFAB SOLAR3.9%
KYOCERA SOLAR3.9%
Inverters
ENPHASE ENERGY36.9%
SOLAREDGE28.4%
SMA AMERICA8.2%
SUNPOWER8.1%
TESLAINC2.8%
Frequently asked
Quick answers about 91941
How many solar installations are there in 91941?
SolarDNA counts 4,820 active solar installations in La Mesa 91941, 4,751 of them residential, with data through March 23, 2026.
How much does solar cost in 91941?
The median residential system in 91941 cost $4.14 per watt over the trailing twelve months, $0.12/W below the California median.
Is solar growing in 91941?
Installations in 91941 are down 14.1%: 195 in the trailing twelve months versus 227 before.
Who installs solar in 91941?
SUNRUN, TESLA, SEMPER SOLARIS lead the 480 installers with systems in 91941. The full comp set is above.
Is 91941 a good market for solar sales?
91941 scores 45 out of 100 (Good, higher than 69% of U.S. zip markets).