Between 2023 and 2025, 865 home solar systems were installed in Costa Mesa by 164 different companies. Sunrun installed the most (209, or 24% of the local market), followed by Tesla (41) and Orange County Contracting Services (34). 28% of the systems were leased or financed through a power purchase agreement; the rest were bought outright. Every company in the ranking was still installing in 2025; installers that have since closed are left out.
Top 10 Solar Companies in Costa Mesa by Home Installations
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Serves Costa Mesa, CA · no office address listed
- Most installations
- Mostly leases & PPAs
- Typical system
- 6.7 kW
- Median price (owned)
- $4.30/W
- Leased / PPA
- 86%
- With battery
- 62%
Sunrun mostly sells leases and power purchase agreements: 86% of its systems here were leased or on a PPA, so the homeowner pays monthly and doesn't own the panels. Its most common setup here pairs JA Solar panels with SolarEdge inverters with power optimizers. 62% of its systems here include a home battery. Its median price for an owned system, $4.30/W, is 7% above the Costa Mesa median of $4.00/W. A typical system is 6.7 kW, about 17 panels, and it has installed in Costa Mesa since 2000. It is also among the top installers in 107 other cities we rank, including Bakersfield and San Diego.
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Serves Costa Mesa, CA · no office address listed
- Mostly sells systems you own
- Most battery installs
- Typical system
- 8.5 kW
- Median price (owned)
- $4.51/W
- Leased / PPA
- 0%
- With battery
- 83%
Tesla mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Hanwha Q CELLS panels with Tesla inverters. 83% of its systems here include a home battery, well above the Costa Mesa average of 38%. Its median price for an owned system, $4.51/W, is 13% above the Costa Mesa median of $4.00/W. A typical system is 8.5 kW, about 21 panels, and it has installed in Costa Mesa since 2001. It is also among the top installers in 84 other cities we rank, including Fremont and Sunnyvale.
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- (949) 427-8817
- 240 Progress Suite 100, Irvine, CA 92618
- Typical system
- 7.4 kW
- Median price (owned)
- $4.02/W
- Leased / PPA
- 21%
- With battery
- 68%
Orange County Contracting Services sells both: 21% of its systems here were leased or on a PPA, the rest bought outright. Its most common setup here pairs Panasonic panels with Tesla inverters. 68% of its systems here include a home battery. Its median price for an owned system, $4.02/W, is close to the Costa Mesa median. A typical system is 7.4 kW, about 19 panels, and it has installed in Costa Mesa since 2017. It is also among the top installers in 9 other cities we rank, including Huntington Beach and Orange.
Phone from its California contractor license, CSLB #1023627
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Serves Costa Mesa, CA · no office address listed
- Mostly sells systems you own
- Lowest median price in this list
- Typical system
- 8.8 kW
- Median price (owned)
- $2.82/W
- Leased / PPA
- 0%
- With battery
- 40%
Solar Optimum Design Electrical mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Panasonic panels with Enphase microinverters. 40% of its systems here include a home battery. Its median price for an owned system, $2.82/W, is 30% below the Costa Mesa median of $4.00/W. A typical system is 8.8 kW, about 22 panels, and it has installed in Costa Mesa since 2011. It is also among the top installers in 19 other cities we rank, including Torrance and Sunnyvale.
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- Mostly sells systems you own
- (866) 467-6987
- powur.com
- 5850 El Camino Real, Carlsbad, CA 92008
- Typical system
- 8.4 kW
- Median price (owned)
- $3.82/W
- Leased / PPA
- 5%
- With battery
- 11%
Powur mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Hanwha Q CELLS panels with Enphase microinverters. 11% of its systems here include a home battery. Its median price for an owned system, $3.82/W, is close to the Costa Mesa median. A typical system is 8.4 kW, about 21 panels, and it has installed in Costa Mesa since 2019. It is also among the top installers in 24 other cities we rank, including Rancho Cucamonga and Corona.
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- Mostly sells systems you own
- (888) 373-9379
- betterearth.solar
- 16720 Marquardt Avenue, Cerritos, CA 90703
- Typical system
- 7.2 kW
- Median price (owned)
- $4.83/W
- Leased / PPA
- 0%
- With battery
- 18%
Better Earth mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Hanwha Q CELLS panels with SolarEdge inverters with power optimizers. 18% of its systems here include a home battery. Its median price for an owned system, $4.83/W, is 21% above the Costa Mesa median of $4.00/W. A typical system is 7.2 kW, about 18 panels, and it has installed in Costa Mesa since 2018. It is also among the top installers in 44 other cities we rank, including Fremont and San Bernardino.
Phone from its California contractor license, CSLB #1024460
- Map & reviews ↗
Enlightened Energy
Serves Costa Mesa, CA · no office address listed
- Mostly sells systems you own
- Typical system
- 10.0 kW
- Median price (owned)
- $3.04/W
- Leased / PPA
- 0%
Enlightened Energy mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Hanwha Q CELLS panels with Enphase microinverters. Its median price for an owned system, $3.04/W, is 24% below the Costa Mesa median of $4.00/W. A typical system is 10.0 kW, about 25 panels, and it has installed in Costa Mesa since 2016.
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- Mostly sells systems you own
- (562) 633-4400
- amecosolar.com
- 7623 Somerset Blvd, Paramount, CA 90723
- Typical system
- 8.3 kW
- Median price (owned)
- $3.49/W
- Leased / PPA
- 0%
- With battery
- 47%
Ameco Solar mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs REC Group panels with Enphase microinverters. 47% of its systems here include a home battery. Its median price for an owned system, $3.49/W, is 13% below the Costa Mesa median of $4.00/W. A typical system is 8.3 kW, about 21 panels, and it has installed in Costa Mesa since 2002. It is also among the top installers in 2 other cities we rank, including Torrance and Long Beach.
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- (866) 865-4559
- 970 West 190th Street Ste 302, Torrance, CA 90502
- Typical system
- 7.9 kW
- Leased / PPA
- 27%
- With battery
- 33%
ESP (Energy Service Partners) sells both: 27% of its systems here were leased or on a PPA, the rest bought outright. Its most common setup here pairs Aptos Solar panels with SolarEdge inverters with power optimizers. 33% of its systems here include a home battery. A typical system is 7.9 kW, about 20 panels, and it has installed in Costa Mesa since 2014. It is also among the top installers in 36 other cities we rank, including Moreno Valley and Santa Ana.
Phone from its California contractor license, CSLB #619149
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Serves Costa Mesa, CA · no office address listed
- Mostly sells systems you own
- Typical system
- 5.6 kW
- Leased / PPA
- 0%
Abundant Energy Construction mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Hanwha Q CELLS panels with Enphase microinverters. A typical system is 5.6 kW, about 14 panels, and it has installed in Costa Mesa since 2016. It is also among the top installers in 6 other cities we rank, including Huntington Beach and Richmond.
Comparing quotes in Costa Mesa?
Divide each quote's total, before incentives, by the system size in watts. Homeowners in Costa Mesa who bought their system paid a median of $4.00/W in 2023–2025. Reject any 2026 quote that subtracts a 30% federal tax credit from a purchase: that credit ended in 2025.
How to check a solar quote →Home Solar in Costa Mesa by the Numbers
Based on 865 residential systems installed in Costa Mesa between 2023 and 2025, as reported to utilities and state agencies.
Most-installed panel brands
- Hanwha Q CELLS
- JA Solar
- REC Group
Most-installed inverter brands
- Enphase Energy
- SolarEdge
- Tesla
How these brands compare nationwide: share, price and leasing →
Home installations per year
Median price of owned systems by year: 2020: $3.75/W · 2021: $3.50/W · 2022: $4.14/W · 2023: $3.80/W · 2024: $4.05/W · 2025: $4.67/W.
Solar Panel Repair in Costa Mesa
When a system stops producing, the best first call is an established local company. The companies ranked above installed systems in Costa Mesa through 2025, so they know the equipment on local roofs. Many will service a system they didn't install, but not all — ask before you book, and expect a diagnostic fee.
46% of the home systems installed here in 2023–2025 use Enphase Energy inverters, followed by SolarEdge (26%). Enphase systems use a microinverter under each panel, so one failure usually knocks out a single panel and the monitoring app shows which one. Systems with a central (string) inverter — SolarEdge and others — stop producing entirely when that inverter fails; a dark screen or an error code on the unit on your wall is the usual sign.
Checks to do before you call anyone: solar troubleshooting guide. Storm damage, a roof leak or a burning smell: what to do first.
Installers That Closed or Went Bankrupt in Costa Mesa
At least 313 home solar systems in Costa Mesa were installed by companies that have since closed, liquidated or filed for bankruptcy. They are left out of the ranking above. If one of them installed your system, its workmanship warranty is likely gone — but panel and inverter warranties come from the manufacturer and usually survive the installer.
- Freedom Forever89 systems in Costa Mesa
Filed for Chapter 11 in April 2026; converted to Chapter 7 liquidation in August 2026. Source: pv magazine USA
- SunPower80 systems in Costa Mesa
Filed for Chapter 11 bankruptcy in August 2024. Its assets were sold off. The SunPower brand now belongs to Complete Solaria, a different company that renamed itself SunPower in 2025. Source: Utility Dive
- Verengo36 systems in Costa Mesa
Filed for Chapter 11 bankruptcy in September 2016; its last office closed in 2019. Source: pv magazine
- Sungevity30 systems in Costa Mesa
Sungevity filed for Chapter 11 bankruptcy in March 2017. Source: Solar Power World
- PetersenDean28 systems in Costa Mesa
Filed for Chapter 11 bankruptcy in June 2020; its assets were sold in 2021. Source: Solar Power World
- Sullivan Solar Power28 systems in Costa Mesa
Shut down abruptly in November 2021. Source: Solar Power World
- Solcius22 systems in Costa Mesa
Filed for Chapter 7 bankruptcy in February 2024. Source: Solar Power World
See the full list of solar companies that went out of business and what still works if yours is one of them.
Solar in Costa Mesa: Common Questions
Who installs the most solar panels in Costa Mesa?
In the most recent three years of records (2023–2025), Sunrun installed 209 home systems in Costa Mesa, more than any other company. Tesla (41) and Orange County Contracting Services (34) came next. Volume shows local experience, not workmanship, so compare quotes and reviews before choosing.
How much does a solar system cost in Costa Mesa?
Homeowners who bought their system outright paid a median of $4.00/W before incentives, and the typical system was 7.2 kW — about $28,500 in total. Prices vary by installer: in the ranking above, the median ranges from $2.82/W to $4.83/W.
Do most people in Costa Mesa buy or lease their panels?
72% bought their system and 28% leased it or signed a power purchase agreement (PPA). With a lease or PPA you pay little upfront, but you don't own the panels and the savings are smaller over the contract. Some installers sell almost only one way — check the "Leased / PPA" figure for each company in the ranking.
Who repairs solar panels in Costa Mesa?
Start with the companies in the ranking above: Sunrun, Tesla and Orange County Contracting Services did the most work here, and an installer that knows the equipment on local roofs can usually diagnose a fault faster. If your system was leased or is on a PPA, call the company you pay each month first — maintenance is normally its job.
Can I still get the federal solar tax credit in 2026?
Not as a homeowner buying the system: the 30% residential credit (Section 25D) ended on December 31, 2025. Be wary of any quote that still subtracts it from the price. See our 2026 solar tax credit guide for what's left.
What if my solar installer went out of business?
Your panels and inverters are still covered by their manufacturers' warranties; what you lose is the installer's workmanship and roof-leak warranty. If the system is leased or on a PPA, the company you pay each month is usually responsible for repairs, and any active company in the ranking can take over service. See the installers that closed in Costa Mesa and what still works when an installer closes.
What do homeowners in Costa Mesa pay for electricity?
Residential customers in California pay an average of 34.74¢ per kWh, 99% above the national average. The higher the rate, the faster solar pays for itself. Source: EIA, Electric Power Monthly, Table 5.6.A.
No company pays to be listed or to rank higher, and any ad on this site is labeled. Before you sign, confirm the contractor license, insurance and recent reviews, and get at least three quotes. If a company in Costa Mesa has closed, moved or changed its phone number, tell us and we'll check it.
How This Ranking Works
Companies are ranked by the home solar systems they installed here in 2023–2025, from utility and state records; each needs at least 10 local installations and must still have been installing in 2025. Closed or bankrupt companies are removed and listed separately. The count shows local experience, not workmanship or service.
Source: Tracking the Sun, Lawrence Berkeley National Laboratory (2026 edition), licensed CC BY 4.0. In New York and New Jersey, recent years come from the state programs' own records (NYSERDA and New Jersey's Clean Energy Program). Company names were standardized and closures checked against news reports by Solar Power Fix. More about our methodology.
Solar system not producing in Costa Mesa?
The checks to do before you call anyone: the inverter screen, the breakers, the monitoring app and what each error code means.