Ione, CA solar installation & market data
Updated April 3, 2026 By The SolarDNA Data Team
Ione has 1,826 solar installations across 1 zip code at a median installed cost of $3.92/W, installations down 23.8% over the trailing twelve months, and an installs-weighted Market Score of 43.
Active installations
1,826
Zip markets
1
Median cost
$3.92/W
12-mo growth
▼ 23.8%
Installers active
12
City Market Score
Good · installs-weighted across 1 zips
Best zip in Ione scores higher than 57% of U.S. zip markets.
Versus California
How Ione compares with the state
Installed cost
$0.34/W below
state median $4.26/W
Market score
43 vs 53
California scores 53
Share of state installs
0.08%
of 2.3M tracked statewide
Battery attach
10.4%
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: 85–107 installs (midpoint 96)
Trailing-12-month installs carried forward at half the observed growth rate (capped at ±30%), with a ±12% band. Not a forecast of permits or policy.
Growth & pricing
Ione by year
109 installs in the trailing twelve months vs 143 before
Installations by year
Median installed cost, $/W DC by year
Installer comp set
Who installs in Ione
Summed across every zip in the city
| # | Installer | Installs | 12-mo | Zips | $/W |
|---|---|---|---|---|---|
| 1 | V3 ELECTRIC | 298 | 4 | 1 | $3.04 |
| 2 | SUNRUN | 251 | 25 | 1 | $3.81 |
| 3 | CITADEL ROOFING AND SOLAR | 130 | 7 | 1 | $2.85 |
| 4 | SUNPOWER | 91 | 0 | 1 | $4.78 |
| 5 | VILLARA BUILDING SYSTEMS | 90 | 0 | 1 | $3.80 |
| 6 | TESLA | 83 | 2 | 1 | $5.12 |
| 7 | BRIGHT OPS | 70 | 7 | 1 | $4.22 |
| 8 | GOLD RUSH ENERGY SOLUTIONS | 48 | 0 | 1 | $4.02 |
| 9 | I LOVE MY SOLAR | 42 | 15 | 1 | $4.59 |
| 10 | FREEDOM FOREVER | 36 | 2 | 1 | $4.62 |
| 11 | SENGA ENERGY | 35 | 6 | 1 | $4.60 |
| 12 | FUTURE ENERGY SAVERS | 32 | 1 | 1 | $5.83 |
Zip markets
Zips in Ione
Ranked by installations · click for the zip market
| Zip | Installs | $/W | Score |
|---|---|---|---|
| 95640 | 1,826 | $3.92 | 43 C |