Between 2023 and 2025, 5,517 home solar systems were installed in Fontana by 263 different companies. Sunrun installed the most (1,056, or 19% of the local market), followed by Bright Planet Solar (386) and Tesla (174). 54% 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 Fontana by Home Installations
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Serves Fontana, CA · no office address listed
- Most installations
- Mostly leases & PPAs
- Typical system
- 6.8 kW
- Median price (owned)
- $4.45/W
- Leased / PPA
- 85%
- With battery
- 66%
Sunrun mostly sells leases and power purchase agreements: 85% 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. 66% of its systems here include a home battery. Its median price for an owned system, $4.45/W, is close to the Fontana median. A typical system is 6.8 kW, about 17 panels, and it has installed in Fontana 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 Fontana, CA · no office address listed
- Mostly leases & PPAs
- Typical system
- 6.7 kW
- Median price (owned)
- $5.56/W
- Leased / PPA
- 93%
- With battery
- 62%
Bright Planet Solar mostly sells leases and power purchase agreements: 93% 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 LONGi Green Energy panels with SolarEdge inverters with power optimizers. 62% of its systems here include a home battery. Its median price for an owned system, $5.56/W, is 26% above the Fontana median of $4.43/W. A typical system is 6.7 kW, about 17 panels, and it has installed in Fontana since 2001. It is also among the top installers in 69 other cities we rank, including Stockton and Chula Vista.
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Serves Fontana, CA · no office address listed
- Mostly sells systems you own
- Lowest median price in this list
- Typical system
- 8.8 kW
- Median price (owned)
- $3.75/W
- Leased / PPA
- 1%
- With battery
- 76%
Tesla mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Tesla panels with Tesla inverters. 76% of its systems here include a home battery. Its median price for an owned system, $3.75/W, is 15% below the Fontana median of $4.43/W. A typical system is 8.8 kW, about 22 panels, and it has installed in Fontana since 2001. It is also among the top installers in 84 other cities we rank, including Fremont and Sunnyvale.
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- Mostly leases & PPAs
- Most battery installs
- (844) 837-6937
- v3electric.com
- 12402 Industrial Blvd # B7, Victorville, CA 92395
- Typical system
- 5.8 kW
- Median price (owned)
- $4.05/W
- Leased / PPA
- 82%
- With battery
- 77%
V3 Electric mostly sells leases and power purchase agreements: 82% 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 CSI Solar panels with Enphase microinverters. 77% of its systems here include a home battery. Its median price for an owned system, $4.05/W, is 9% below the Fontana median of $4.43/W. A typical system is 5.8 kW, about 15 panels, and it has installed in Fontana since 2013. It is also among the top installers in 18 other cities we rank, including San Bernardino and Concord.
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Serves Fontana, CA · no office address listed
- Typical system
- 3.6 kW
- Leased / PPA
- 30%
- With battery
- 14%
LGCY Electric sells both: 30% of its systems here were leased or on a PPA, the rest bought outright. Its most common setup here pairs CSI Solar panels with Enphase microinverters. 14% of its systems here include a home battery. A typical system is 3.6 kW, about 9 panels, and it has installed in Fontana since 2017. It is also among the top installers in 2 other cities we rank, including Norwalk and Los Angeles.
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- (866) 865-4559
- 970 West 190th Street Ste 302, Torrance, CA 90502
- Typical system
- 7.0 kW
- Median price (owned)
- $4.59/W
- Leased / PPA
- 59%
- With battery
- 52%
ESP (Energy Service Partners) sells both: 59% of its systems here were leased or on a PPA, the rest bought outright. Its most common setup here pairs Aptos Solar panels with Enphase microinverters. 52% of its systems here include a home battery. Its median price for an owned system, $4.59/W, is close to the Fontana median. A typical system is 7.0 kW, about 18 panels, and it has installed in Fontana 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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- (888) 373-9379
- betterearth.solar
- 16720 Marquardt Avenue, Cerritos, CA 90703
- Typical system
- 7.2 kW
- Median price (owned)
- $5.64/W
- Leased / PPA
- 31%
- With battery
- 54%
Better Earth sells both: 31% of its systems here were leased or on a PPA, the rest bought outright. Its most common setup here pairs Hanwha Q CELLS panels with SolarEdge inverters with power optimizers. 54% of its systems here include a home battery. Its median price for an owned system, $5.64/W, is 27% above the Fontana median of $4.43/W. A typical system is 7.2 kW, about 18 panels, and it has installed in Fontana 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
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- Mostly sells systems you own
- (866) 467-6987
- powur.com
- 5850 El Camino Real, Carlsbad, CA 92008
- Typical system
- 9.2 kW
- Median price (owned)
- $4.39/W
- Leased / PPA
- 1%
- With battery
- 20%
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. 20% of its systems here include a home battery. Its median price for an owned system, $4.39/W, is close to the Fontana median. A typical system is 9.2 kW, about 23 panels, and it has installed in Fontana since 2019. It is also among the top installers in 24 other cities we rank, including Rancho Cucamonga and Costa Mesa.
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- Mostly sells systems you own
- (866) 479-0726
- titaniumsolar.com
- 2970 Inland Empire Blvd #200, Ontario, CA 91761
- Typical system
- 8.0 kW
- Median price (owned)
- $6.11/W
- Leased / PPA
- 0%
- With battery
- 13%
Titanium Solar mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Vietnam Sunergy Joint Stock Company panels with Enphase microinverters. 13% of its systems here include a home battery. Its median price for an owned system, $6.11/W, is 38% above the Fontana median of $4.43/W. A typical system is 8.0 kW, about 20 panels, and it has installed in Fontana since 2019. It is also among the top installers in 9 other cities we rank, including Norwalk and San Bernardino.
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Serves Fontana, CA · no office address listed
- Mostly sells systems you own
- Typical system
- 3.3 kW
- Median price (owned)
- $6.40/W
- Leased / PPA
- 0%
Solara Home Energy mostly sells systems the homeowner owns, paid in cash or with a loan. Its most common setup here pairs Aptos Solar panels with Enphase microinverters. Its median price for an owned system, $6.40/W, is 44% above the Fontana median of $4.43/W. A typical system is 3.3 kW, about 8 panels, and it has installed in Fontana since 2023. It is also among the top installers in 5 other cities we rank, including Lancaster and Irvine.
Comparing quotes in Fontana?
Divide each quote's total, before incentives, by the system size in watts. Homeowners in Fontana who bought their system paid a median of $4.43/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 →Solar Battery Installers in Fontana
2,465 of the 5,517 home solar systems installed in Fontana in 2023–2025 (45%) included a home battery, put in by 167 companies. These installed the most:
| Installer | With battery | Of its installs | Median price | Leased / PPA |
|---|---|---|---|---|
| 1. Sunrun | 696 | 66% | $4.95/W | 95% |
| 2. Bright Planet Solar | 239 | 62% | — | 96% |
| 3. Tesla | 132 | 76% | $4.14/W | 1% |
| 4. V3 Electric | 112 | 77% | — | 96% |
| 5. ESP (Energy Service Partners) | 61 | 52% | — | 82% |
- Most common battery: SolarEdge (39% of those with a known brand), then Tesla (29%).
- What a battery adds: owned systems with one had a median of $5.04/W, against $4.43/W for all home systems in Fontana. The recorded price includes the battery, so the gap (+0.61 $/W on a 6.6 kW system) is roughly what it cost.
- Battery on most of their jobs: Sunrun (66%), Bright Planet Solar (62%), Tesla (76%), V3 Electric (77%), ESP (Energy Service Partners) (52%), Bryton Power (81%), Better Earth (54%), Current Home Solar (66%), Sol Nova Electric (89%), Lemondrop Solar (88%). The others add one on some jobs, not by default.
- Lowest median price among them: Tesla, at $4.14/W for systems the homeowner bought.
Ask whether a battery quote backs up the whole house or only a subpanel, and size it from your bills: one 13 kWh battery covers essentials overnight, not central air. Under California's Net Billing Tariff (from April 2023) exported solar earns little, so storing it for evening use is what makes a battery pay. More in Tesla Powerwall installation.
Enphase Installers in Fontana
3,131 of the 5,517 home solar systems installed in Fontana in 2023–2025 (57%) used Enphase inverters, put in by 193 companies. These installed the most:
| Installer | With Enphase | Of its installs | Median price | Leased / PPA |
|---|---|---|---|---|
| 1. Sunrun | 199 | 19% | $3.10/W | 68% |
| 2. LGCY Electric | 120 | 96% | — | 27% |
| 3. V3 Electric | 108 | 74% | — | 93% |
| 4. Titanium Solar | 64 | 94% | $6.33/W | 0% |
| 5. ESP (Energy Service Partners) | 61 | 52% | — | 79% |
- Typical Enphase system: 4.5 kW at a median $4.43/W when bought, most often with Hanwha Q CELLS panels.
- Enphase on most of their jobs: LGCY Electric (96%), V3 Electric (74%), Titanium Solar (94%), ESP (Energy Service Partners) (52%), Solara Home Energy (100%), Bryton Power (97%), Powur (68%), SolarMax (81%), Complete Solar (86%). The others use Enphase on some jobs, not by default.
- Lowest median price among them: Sunrun, at $3.10/W for systems the homeowner bought.
Enphase puts a microinverter under each panel, with a 25-year limited warranty; if one fails, only that panel stops. If your installer has closed, any of these companies can take over the system.
Home Solar in Fontana by the Numbers
Based on 5,540 residential systems installed in Fontana between 2023 and 2025, as reported to utilities and state agencies.
Most-installed panel brands
- Hanwha Q CELLS
- CSI Solar
- JA Solar
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: $4.25/W · 2021: $4.25/W · 2022: $4.29/W · 2023: $4.25/W · 2024: $4.44/W · 2025: $4.69/W.
Solar Panel Repair in Fontana
When a system stops producing, the best first call is an established local company. The companies ranked above installed systems in Fontana 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.
56% of the home systems installed here in 2023–2025 use Enphase Energy inverters, followed by SolarEdge (27%). 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 Fontana
At least 4,549 home solar systems in Fontana 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.
- SunPower1,418 systems in Fontana
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
- Sunnova1,396 systems in Fontana
Filed for Chapter 11 bankruptcy in June 2025. Source: Houston Public Media
- Freedom Forever561 systems in Fontana
Filed for Chapter 11 in April 2026; converted to Chapter 7 liquidation in August 2026. Source: pv magazine USA
- Sungevity395 systems in Fontana
Sungevity filed for Chapter 11 bankruptcy in March 2017. Source: Solar Power World
- Solcius223 systems in Fontana
Filed for Chapter 7 bankruptcy in February 2024. Source: Solar Power World
- Verengo136 systems in Fontana
Filed for Chapter 11 bankruptcy in September 2016; its last office closed in 2019. Source: pv magazine
- PetersenDean119 systems in Fontana
Filed for Chapter 11 bankruptcy in June 2020; its assets were sold in 2021. Source: Solar Power World
- Infinity Energy88 systems in Fontana
Ceased operations in 2023. Source: Forme Solar
- Titan Solar86 systems in Fontana
Ceased operations and filed for Chapter 7 in June 2024. Source: PV Tech
- American Solar Direct51 systems in Fontana
Filed for Chapter 7 bankruptcy in June 2017. Source: pv magazine USA
- Kuubix Energy47 systems in Fontana
Closed; its California contractor license has been revoked. Source: EnergySage
- ADT Solar29 systems in Fontana
ADT exited the residential solar business in 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 Fontana: Common Questions
Who installs the most solar panels in Fontana?
In the most recent three years of records (2023–2025), Sunrun installed 1,056 home systems in Fontana, more than any other company. Bright Planet Solar (386) and Tesla (174) came next. Volume shows local experience, not workmanship, so compare quotes and reviews before choosing.
How much does a solar system cost in Fontana?
Homeowners who bought their system outright paid a median of $4.43/W before incentives, and the typical system was 5.7 kW — about $25,500 in total. Prices vary by installer: in the ranking above, the median ranges from $3.75/W to $6.40/W.
Do most people in Fontana buy or lease their panels?
46% bought their system and 54% 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 Fontana?
Start with the companies in the ranking above: Sunrun, Bright Planet Solar and Tesla 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 Fontana and what still works when an installer closes.
What do homeowners in Fontana 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 Fontana 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 Fontana?
The checks to do before you call anyone: the inverter screen, the breakers, the monitoring app and what each error code means.