Solar Optimum Inc
Solar installer working in Marin County. Licensed since 2012.
- License active
- Workers' comp on file
25 jobs on Marin County permits, 2021 to 2025: 23 solar installations, 2 EV charger installations. 20th most solar system permits of 82 contractors in Marin County.
What the public records show
From the state's license records and the city's permits, one question at a time.
| Question | Records show | Mark |
|---|---|---|
| Licensed? | License 972228, active in the state's records on Sep 23, 2026General engineering, general building, electricalNo complaints or citations on the board's public record. | Checks out |
| Workers' comp? | Workers' comp policy on file with the stateThis covers their crew if someone is hurt. It is not insurance for your home. | On file |
| In business? | Licensed since 2012 | |
| Jobs on record | 25 jobs on Marin County permits, 2021 to 2025: 23 solar installations, 2 EV charger installations20th most solar system permits of 82 licensed contractors in Marin County. That counts jobs, not quality.Our Marin County permit records cover October 2021 to July 2026.Of their 23 solar system permits, 12 mention a battery. |
Records: the state license board and City of Marin County permits.
State license board record
Last checked Oct 4, 2026. This may have changed. Check it on CSLB.
No complaints or citations on the board's public record.
Source: California Contractors State License Board, checked Oct 4, 2026. Look up license 972228 on CSLB
Cost and timing
All solar system jobs in Marin County: $17,000 to $44,000
Half of 2,700 city permits list an amount in this range. Permit amounts are often lower than what you pay.
- Solar with a battery in Marin County: $24,000 to $56,000 (869 permits)
How to read this range
Contractors write a job value on the permit form, and the city uses it to set the permit fee. It is not the contract price, and it is often lower than what you pay. A quarter of the permits list less than this range, and a quarter list more. Use it to see if a quote is in the normal range.
Permit value (not a price)
Their typical permit lists $27,000 (half list more, half less)
That is the figure written on the permit form, which can be far from what you pay. What solar system jobs cost in Marin County.
Get 2 or 3 written quotes.
Track record
2 jobs in the last 12 months, down from 5 the year before
Where they work most
- 949417 jobs
- 949306 jobs
- 949604 jobs
- 949034 jobs
- 949042 jobs
Jobs by kind of work
Latest jobs
Permit values are what the contractor wrote on the permit form, not what the owner paid.
| Date | Work | ZIP | On the permit form |
|---|---|---|---|
| Oct 30, 2025 | Solar, 11.31 kWRoof mounted 11.31 kw pv system 26 pv modules 1-tesla powerwall 3 ess 1-tesla backup switch… | 94960 | $39,000 |
| Oct 6, 2025 | Solar, 12.18 kWResidential Roof Mount PV System 28 modules / 12.18kW (2) Tesla Powerwall 3 | 94904 | $40,000 |
| Sep 4, 2025 | Solar, 12.62 kWResidential Roof Mount PV System 29 modules / 12.62kW (1) Tesla Powerwall 3 | 94930 | $32,000 |
| Sep 3, 2025 | Solar, 15.225 kWInstall Roof Mount PV Solar at (15.225 KW) 35 Modules, New (27KWH) Tesla Energy Storage System with… | 94941 | $115,000 |
| Jun 12, 2025 | Solar, 16.97 kWResidential Roof Mount PV System with Storage 39 modules / 16.97kW (1) Tesla Powerwall 3 (1) Tesla… | 94960 | $50,000 |
| Mar 28, 2025 | SolarInstall 1-tesla powerwall 3 expansion unit (13.5 kwh ) (adding to an existing solar system) | 94903 | $24,000 |
| Oct 25, 2024 | Solar, 10.0 kWInstall a 10.0 kw | 94941 | $30,000 |
| Sep 24, 2024 | Solar, 7.98 kW | 94938 | $30,000 |
| Sep 19, 2024 | Solar, 12.40 kW | 94903 | $41,000 |
| Apr 2, 2024 | Solar, 8.20 kWInstallation of an 8.20 kW Roof-Mounted Solar PV System consisting of (20) Modules, and (1) 11.5… | 94930 | $27,000 |
| Jan 23, 2024 | EV chargerInstall (2) tesla powerwall 2.0 AC 27 kWh / (1) 50A EV Outlet | 94930 | $21,000 |
| Aug 21, 2023 | Solar, 7.20 kWInstall 7.20kw roof mounted pv system with 18 mdules and 18 microinverters / 225a main panel… | 94930 | $25,000 |
| Mar 28, 2023 | Solar, 4.92 kWPV Roof mounted system: 4.92 kw with (12) modules and (12) microinverters | 94904 | $10,000 |
| Mar 23, 2023 | Solar, 9.2 kW9.2 kW Roof Mounted PV system, consist of 23 microinverters/modules, (1)125A IQ Combiner box | 94960 | $18,500 |
| Mar 10, 2023 | Solar, 5.4 kW5.4 kW Roof Mounted PV system, consist of 15 microinverters/modules, (1)125A IQ Combiner box | 94960 | $11,000 |
| Feb 23, 2023 | Solar, 16.00 kWInstall 40 Roof Mount Solar Panels 16.00KW | 94941 | $40,000 |
| Feb 21, 2023 | Solar, 10.66 kWPV Roof Mounted system: 10.66kw with (26) modules and (26) microinverters | 94941 | $21,000 |
| Dec 6, 2022 | Solar, 9.6 kW9.6 kW Roof-Mounted PV System, composed of 24 modules, 24 microinverters, (1)125A combiner box, … | 94930 | $43,000 |
| Dec 6, 2022 | EV charger, 9.6 kW9.6 kW Roof-Mounted PV System, composed of 24 modules, 24 microinverters, (1)125A combiner box, … | 94930 | $43,000 |
| Oct 7, 2022 | Solar, 8.8 kW8.8 kW Roof-Mounted PV Solar system, comprised of 22 modules, 22 microinverters, (1)125A Combiner… | 94949 | $21,000 |
| Sep 16, 2022 | Solar, 9.6 kW9.6 kW Roof-Mounted PV Solar system, comprised of 24 modules, 24 microinverters, (1)125A Combiner… | 94903 | $19,000 |
| Aug 2, 2022 | Solar, 10.80 kW | 94941 | $21,000 |
| May 12, 2022 | SolarInstallation of (1) Enphase Encharge Battery, (1) 200A Enphase switch, and (1) 125A Backup Panel | 94903 | $11,000 |
| Mar 8, 2022 | Solar, 9.62 kW | 94941 | $31,000 |
| Oct 27, 2021 | Solar, 5.84 kW | 94941 | $10,000 |
What to ask before you hire
About Solar Optimum Inc
- Ask what the warranty covers and for how long, in writing.
Worth asking any solar installer
- Can you show me proof of liability insurance and your bond?
- What size system, which panels and inverter, and what will it make in a year?
- Is my roof good for 25 more years, and what if it needs work first?
- Who handles the permit and the utility's approval to turn it on?
Get a quote from Solar Optimum Inc
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