El Cajon, CA 92019 solar market data
Updated March 30, 2026 By The SolarDNA Data Team
El Cajon 92019 has 5,676 solar installations at a median installed cost of $4.09/W, installations up 2.2% over the trailing twelve months, and a Market Score of 50 — higher than 88% of U.S. zip markets.
Versus California
How 92019 compares with the state
Installed cost
$0.18/W below
state median $4.26/W
Market score
50 vs 53
California scores 53
Share of state installs
0.25%
of 2.3M tracked statewide
Battery attach
5.7%
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: 172–210 installs (midpoint 191)
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
92019 by year
189 installs in the trailing twelve months vs 185 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 92019
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 867 | 32 | 6.29 | $4.58 |
| 2 | TESLA | 427 | 7 | 7.16 | $5.12 |
| 3 | SEMPER SOLARIS | 327 | 0 | 6.88 | $4.04 |
| 4 | BAKER ELECTRIC SOLAR | 317 | 0 | 12.67 | $3.96 |
| 5 | SOLARTECH ENERGY SYSTEMS | 206 | 0 | 7.89 | $3.65 |
| 6 | SUNPOWER | 120 | 1 | 30.33 | $4.95 |
| 7 | SULLIVAN SOLAR POWER | 117 | 0 | 9.74 | $4.27 |
| 8 | BRIGHT PLANET SOLAR | 109 | 8 | 6.44 | $4.83 |
| 9 | STELLAR SOLAR | 108 | 2 | 7.96 | $3.98 |
| 10 | BLALOCK ELECTRIC | 90 | 8 | 7.9 | $3.27 |
| 11 | ASI HEATING AIR | 90 | 0 | 7.51 | $3.64 |
| 12 | SUNGEVITY | 67 | 0 | 7.01 | $4.09 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 92021 El Cajon | 4.5 km | 6,149 | $4.26 | 43 |
| 92020 El Cajon | 4.7 km | 5,062 | $4.17 | 54 |
| 91978 Spring Valley | 6.3 km | 1,135 | $4.22 | 44 |
| 92040 Lakeside | 8.7 km | 6,414 | $4.15 | 48 |
| 91941 La Mesa | 8.9 km | 4,820 | $4.14 | 45 |
| 91942 La Mesa | 9.4 km | 3,308 | $4.27 | 46 |
Same city
Other zips in El Cajon
Equipment
What gets installed in 92019
Share of systems with a recorded brand
Modules
LG ELECTRONICS16.1%
QCELLS NORTH AMERICA14.7%
SUNPOWER14.1%
CSI SOLAR4.8%
KYOCERA SOLAR3.7%
Inverters
ENPHASE ENERGY35.6%
SOLAREDGE29.9%
SMA AMERICA8.3%
SUNPOWER7.8%
ABB3.2%
Frequently asked
Quick answers about 92019
How many solar installations are there in 92019?
SolarDNA counts 5,676 active solar installations in El Cajon 92019, 5,625 of them residential, with data through March 30, 2026.
How much does solar cost in 92019?
The median residential system in 92019 cost $4.09 per watt over the trailing twelve months, $0.18/W below the California median.
Is solar growing in 92019?
Installations in 92019 are up 2.2%: 189 in the trailing twelve months versus 185 before.
Who installs solar in 92019?
SUNRUN, TESLA, SEMPER SOLARIS lead the 496 installers with systems in 92019. The full comp set is above.
Is 92019 a good market for solar sales?
92019 scores 50 out of 100 (Great, higher than 88% of U.S. zip markets).