Palo Alto, CA 94303 solar market data
Updated April 23, 2026 By The SolarDNA Data Team
Palo Alto 94303 has 1,001 solar installations at a median installed cost of $5.02/W, installations up 77.3% over the trailing twelve months, and a Market Score of 52 — higher than 95% of U.S. zip markets.
Zip Market Score
Excellent · higher than 95% of zips
Versus California
How 94303 compares with the state
Installed cost
$0.75/W above
state median $4.26/W
Market score
52 vs 53
California scores 53
Share of state installs
0.04%
of 2.3M tracked statewide
Battery attach
8.0%
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: 77–103 installs (midpoint 90)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±15% band. Not a forecast of permits or policy.
Growth & pricing
94303 by year
78 installs in the trailing twelve months vs 44 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in 94303
Ranked by systems recorded in this zip
| # | Installer | Installs | 12-mo | Avg kW | $/W |
|---|---|---|---|---|---|
| 1 | SUNRUN | 202 | 22 | 5.87 | $4.38 |
| 2 | TESLA | 144 | 4 | 6.3 | $5.12 |
| 3 | RGS ENERGY | 87 | 0 | 2.69 | $9.23 |
| 4 | BRIGHT OPS | 33 | 29 | 5.23 | $5.93 |
| 5 | COBALT POWER SYSTEMS | 22 | 0 | 28.73 | $6.08 |
| 6 | BETTER EARTH | 21 | 0 | 6.05 | $4.81 |
| 7 | FREEDOM FOREVER | 21 | 0 | 4.76 | $4.61 |
| 8 | PALO ALTO SOLAR | 18 | 0 | 3.12 | $6.83 |
| 9 | SUNWORK RENEWABLE ENERGY | 16 | 0 | 6.48 | $2.29 |
| 10 | AMERICAN ARRAY SOLAR | 14 | 0 | 4.28 | $3.57 |
| 11 | ASTRO POWER | 13 | 0 | 2.2 | $7.34 |
| 12 | SUNPOWER | 13 | 0 | 5.57 | $4.45 |
Neighboring zips
The nearest zip markets
By distance between zip centroids
| Zip | Distance | Installs | $/W | Score |
|---|---|---|---|---|
| 94301 Palo Alto | 2.7 km | 192 | $7.42 | 29 |
| 94025 Menlo Park | 5.2 km | 2,472 | $4.68 | 48 |
| 94305 Stanford | 5.3 km | 246 | $5.21 | 35 |
| 94304 Palo Alto | 5.5 km | 23 | $6.38 | 29 |
| 94027 Atherton | 5.6 km | 740 | $5.10 | 34 |
| 94306 Palo Alto | 5.6 km | 258 | $6.80 | 30 |
Same city
Other zips in Palo Alto
Equipment
What gets installed in 94303
Share of systems with a recorded brand
Modules
TRINA SOLAR11.8%
QCELLS NORTH AMERICA11.2%
YINGLI ENERGY CHINA9.4%
CSI SOLAR8.6%
SUNPOWER8.5%
Inverters
ENPHASE ENERGY38.9%
SOLAREDGE25.5%
SMA AMERICA7.9%
TESLA5.5%
FRONIUS USA5.3%
Frequently asked
Quick answers about 94303
How many solar installations are there in 94303?
SolarDNA counts 1,001 active solar installations in Palo Alto 94303, 963 of them residential, with data through April 23, 2026.
How much does solar cost in 94303?
The median residential system in 94303 cost $5.02 per watt over the trailing twelve months, $0.75/W above the California median.
Is solar growing in 94303?
Installations in 94303 are up 77.3%: 78 in the trailing twelve months versus 44 before.
Who installs solar in 94303?
SUNRUN, TESLA, RGS ENERGY lead the 152 installers with systems in 94303. The full comp set is above.
Is 94303 a good market for solar sales?
94303 scores 52 out of 100 (Excellent, higher than 95% of U.S. zip markets).