Maxum Energy
Recently activeSolar installer based in California · installer record #7840 resolved from 100 public installation records.
At a glance
Maxum Energy is a solar installer with 100 recorded installations totalling 1.7 MW, dated 2008 to 2025. All of its records are in California, where it ranks 1377th of 6,010 profiled installers by volume and 2,278th of 10,537 nationally. Its median installed price for solar-only systems in 2023–2025 is $3.00/W before incentives, across 24 priced systems.
Track record
Install volume by year
Recorded installs per year; prices by year are in the table below.
Pricing
Price by year (solar only)
| Year | Priced systems | Maxum Energy | California median | vs state |
|---|---|---|---|---|
| 2025 | 5 | $3.00/W | $3.29/W | −9% |
| 2024 | 10 | $3.10/W | $3.80/W | −18% |
| 2023 | 9 | $2.85/W | $4.06/W | −30% |
| 2022 | 5 | $2.82/W | $4.11/W | −31% |
| 2020 | 6 | $3.05/W | $3.97/W | −23% |
| 2018 | 7 | $2.87/W | $4.01/W | −28% |
Median installed price per DC watt before incentives, systems without a battery, by the year in the public record. Years with fewer than five priced systems are left out.
Why a company's own figure can differ from this one
- Timing. These prices come from state incentive filings, published about once a year, so the latest full year here is 2025. Prices moved down in many states after 2023; a company's current quotes can be lower (or higher) than its last full year on record.
- Dates. A filing is dated when the program processed it, not when the job was sold, so jobs can land in a different month or year than in the company's own books.
- What the price includes. The filed price is the whole project as reported to the program, which can include loan dealer fees, electrical panel upgrades or roof work. A company's internal figure often leaves those out.
- Batteries. Systems flagged with a battery are excluded here; a battery the filing didn't flag can still raise a year's median.
Latest records
Most recent recorded installs
| Date | Location | Size | Price | Ownership |
|---|---|---|---|---|
| Dec 22, 2025 | Compton, CA | 8.5 kW | $21,000 | Host-owned |
| Dec 17, 2025 | San Diego, CA | 9.7 kW | $48,620 | Host-owned · battery |
| Dec 3, 2025 | Malibu, CA | 7.1 kW | $47,026 | Host-owned · battery |
| Dec 3, 2025 | Carson, CA | 2.8 kW | $8,000 | Host-owned |
| Nov 27, 2025 | Westlake Village, CA | 6.2 kW | $37,560 | Host-owned · battery |
| Nov 7, 2025 | Malibu, CA | 4.2 kW | $40,350 | Host-owned · battery |
| Oct 24, 2025 | Thousand Oaks, CA | 4 kW | $29,000 | Host-owned · battery |
| Oct 11, 2025 | Malibu, CA | 4.4 kW | $34,440 | Host-owned · battery |
| Sep 24, 2025 | Westlake Village, CA | 9.8 kW | $36,000 | Host-owned · battery |
| Aug 8, 2025 | Simi Valley, CA | 7.1 kW | $20,000 | Host-owned · battery |
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Service geography
- California
- 100
Busiest cities
Record
- Installer ID
- PC-7840
- First recorded install
- Dec 23, 2008
- Last recorded install
- Dec 22, 2025
- Priced records
- 96
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How does Maxum Energy compare with other installers in California?
By recorded installations Maxum Energy ranks 1377th among the 6,010 installers based in California with five or more records. Its 2023–2025 solar-only median of $3.00/W is about 24% below the California median of $3.95/W on the same basis. Its median system, 8.6 kW, is about 46% above the state median of 5.9 kW. 3% of its recorded installations are third-party owned (lease or power-purchase agreement), against 29% across California. 20% include battery storage, compared with 16% of California records. Installers of similar recorded volume in California include RACHAEL WILLIAMS (101), Homerun Solar (100) and Lennar Homes (100).
How has Maxum Energy's installation volume changed?
Maxum Energy's earliest dated installation on record is from 2008. It has recorded installations in 16 calendar years. The busiest year was 2025, with 17 installations. Its median price per watt moved from $8.49/W in 2008 to $5.02/W in 2025. The most recent recorded installation is dated Dec 22, 2025.
Where does Maxum Energy install solar?
All recorded installations are in California. The cities with the most of its installations are Westlake Village, CA (9), Santa Monica, CA (8), Malibu, CA (6), Redlands, CA (6) and Thousand Oaks, CA (6).
Frequently asked questions
How many solar installations has Maxum Energy completed?
PanelCensus records 100 installations by Maxum Energy, from Dec 23, 2008 to Dec 22, 2025, totalling 1.7 MW of capacity. Public reporting varies by state, so the company's true total may be higher.
What does Maxum Energy charge for solar?
For solar-only systems installed in 2023–2025, the median reported price is $3.00/W before incentives, across 24 priced systems. The California median on the same basis is $3.95/W. Across all 96 priced systems since 2008, including battery systems, the median is $3.28/W. Prices are the total project cost reported to state incentive programs, divided by the system's DC watts, so they can include electrical upgrades or other work billed with the solar.
Where does Maxum Energy install solar?
All 100 recorded installations are in California, the most of them in Westlake Village.
Is Maxum Energy still installing solar?
The most recent installation attributed to Maxum Energy in the public records is dated Dec 22, 2025; 2025 has 17 recorded installations. Records reach PanelCensus months to a couple of years after installation, so recent activity may not appear yet.
Does Maxum Energy install leased or PPA solar systems?
3 recorded installations by Maxum Energy (3%) are third-party owned — a lease or power-purchase agreement; across California the share is 29%.
Does Maxum Energy install battery storage?
20 recorded installations by Maxum Energy (20%) include a battery.
Related installers and places
- All solar installers in California· 6,010 profiles
- Solar installations in California· 2,408,542 records
- RACHAEL WILLIAMS· 101 installations
- Homerun Solar· 100 installations
- Lennar Homes· 100 installations
- Osullivan Green Solar· 100 installations
- Sensible Construction· 100 installations
- GUBRUD'S ELECTRICAL CONTRACTING INC· 100 installations
Dataset updated . Sources: LBNL Tracking the Sun + permit and program records; installer resolved by exact-normalized name matching.
About this data
Source: Lawrence Berkeley National Laboratory's Tracking the Sun, merged with city permit records, state incentive programs and the USGS U.S. Large-Scale Solar Photovoltaic Database / EIA-860 plant registers, as published September 21, 2026 — PanelCensus refreshes it as each source publishes new records. See the methodology for how records are matched, cleaned and scored.
Cite as: PanelCensus, “Maxum Energy, solar installer (California)”, https://panelcensus.com/installers/california/maxum-energy-7840 (data as of September 21, 2026).