Where GAF Ranks
Position among installers of home solar in each city, by installations in the most recent three years of records, and how GAF compares with the local market there.
Its strongest market is Rialto, where it accounts for 3% of the home systems with a known installer.
| City | Rank | Installations | Local share | Price vs. local median | Leased (city average) |
|---|---|---|---|---|---|
| Rialto, California | #3 | 84 | 3% | 41% higher | 25% (64%) |
| Santa Clarita, California | #5 | 60 | 2% | 57% higher | 12% (39%) |
| Ontario, California | #6 | 89 | 2% | 83% higher | 24% (44%) |
| Irvine, California | #7 | 109 | 2% | 67% higher | 6% (32%) |
| Perris, California | #7 | 42 | 2% | 39% higher | 17% (52%) |
| Madera, California | #10 | 111 | 2% | 76% higher | 18% (34%) |
What GAF Installs
- Typical system size
- 4.5 kW
- Leased or on a PPA
- 14%
- Installed with a battery
- 60%
Sells both owned systems and leases or PPAs.
Panel brands
- Qcells (62%)
- GAF Energy (28%)
- Hanwha Q CELLS (7%)
Inverter brands
- Enphase Energy (46%)
- Tesla (30%)
- Delta Electronics (24%)
GAF Prices Compared With the State
Median price per watt of systems the homeowner bought outright, before incentives.
| State | GAF | State median | Difference |
|---|---|---|---|
| California (2023–2025) | $6.69/W | $4.25/W | 57% higher |
Home Installations per Year
Records for the most recent year can be incomplete while utilities finish reporting.
Where GAF Installs Most
| City | Installations (2023–2025) |
|---|---|
| San Diego, CA | 221 |
| Madera, CA | 111 |
| Irvine, CA | 109 |
| Ontario, CA | 89 |
| Rialto, CA | 84 |
| Fresno, CA | 82 |
| Clovis, CA | 79 |
| Tracy, CA | 77 |
| Stockton, CA | 67 |
| Desert Hot Springs, CA | 66 |
| Plumas Lake, CA | 66 |
| Shafter, CA | 66 |
| San Jose, CA | 64 |
| Santa Clarita, CA | 60 |
| Menifee, CA | 54 |
Specialist Rankings
Where GAF ranks among the companies that install the most systems with a battery or with a given inverter brand.
- Solar Battery Installers in Irvine, CA: #3 (104 systems)
- Solar Battery Installers in Ontario, CA: #3 (89 systems)
- Solar Battery Installers in Rialto, CA: #3 (83 systems)
- Solar Battery Installers in Perris, CA: #3 (42 systems)
- Solar Battery Installers in Santa Clarita, CA: #4 (60 systems)
- Solar Battery Installers in Madera, CA: #5 (111 systems)
- Enphase Installers in Irvine, CA: #5 (79 systems)
- Enphase Installers in Ontario, CA: #5 (59 systems)
- Enphase Installers in Riverside, CA: #5 (32 systems)
- Solar Battery Installers in Riverside, CA: #6 (32 systems)
- Enphase Installers in Madera, CA: #7 (68 systems)
- Enphase Installers in Stockton, CA: #7 (53 systems)
Other Top Installers in Rialto
The companies ranked next to GAF in Rialto, by home installations in 2023–2025.
| Company | Installations | Median price | Leased / PPA |
|---|---|---|---|
| Sunrun | 570 | $4.21/W | 79% |
| Bright Planet Solar | 219 | — | 95% |
| ESP (Energy Service Partners) | 76 | $5.41/W | 32% |
| Better Earth | 74 | $5.53/W | 39% |
| V3 Electric | 60 | — | 92% |
| Tesla | 44 | $3.83/W | 0% |
GAF: Common Questions
Is GAF still in business?
GAF was still installing home solar in 2025, the latest year in the public records we use, and it is not on our list of installers that closed or went bankrupt. Records lag a year or two, so confirm before you sign: recent Google reviews show whether it is still answering customers.
Does GAF lease solar panels or sell them?
14% of its home systems in 2023–2025 were leased or on a power purchase agreement, and 86% were bought by the homeowner. Sells both owned systems and leases or PPAs.
What solar panels and inverters does GAF install?
Panels: Qcells (62%), GAF Energy (28%) and Hanwha Q CELLS (7%). Inverters: Enphase Energy (46%), Tesla (30%) and Delta Electronics (24%). Shares of its home systems in 2023–2025 with a known brand.
How much does GAF charge for solar?
In California (2023–2025), homeowners who bought a system from GAF paid a median of $6.69/W before incentives — 57% higher than the state median of $4.25/W. For its typical 4.5 kW system, that is about $30,000. By city: 41% higher than the Rialto median; 57% higher than the Santa Clarita median; 83% higher than the Ontario median.
Does GAF install solar batteries?
60% of its home systems in 2023–2025 included a battery. It ranks among the top battery installers in Irvine, CA, Ontario, CA, Rialto, CA.
Where does GAF install solar?
Most of its recent work is in San Diego (221), Madera (111), Irvine (109), Ontario (89) and Rialto (84). It is ranked in 6 cities in California.
Before You Sign With GAF
- California license: ask for the license number and look it up on the CSLB site; solar work needs a C-46, C-10 or B license.
- Reviews and contact details: see GAF on Google Maps, where recent reviews tell you more than any ranking.
- Quotes: get at least three, and compare price per watt, equipment brands and the workmanship warranty — not just the monthly payment.
Compare GAF with other installers
The Rialto ranking puts GAF next to the other companies that install the most there, with each one's price and leasing share.
Top solar installers in Rialto →Where These Numbers Come From
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.