Where ESP (Energy Service Partners) Ranks
Position among installers of home solar in each city, by installations in the most recent three years of records, and how ESP (Energy Service Partners) compares with the local market there.
Its strongest market is Norwalk, where it accounts for 5% of the home systems with a known installer.
| City | Rank | Installations | Local share | Price vs. local median | Leased (city average) |
|---|---|---|---|---|---|
| Moreno Valley, California | #3 | 129 | 4% | 9% lower | 43% (53%) |
| Santa Ana, California | #3 | 98 | 5% | 33% higher | 36% (31%) |
| Simi Valley, California | #3 | 93 | 4% | 8% higher | 70% (38%) |
| Pomona, California | #3 | 77 | 4% | about the same | 35% (41%) |
| Thousand Oaks, California | #3 | 67 | 5% | 29% higher | 57% (27%) |
| Palmdale, California | #4 | 157 | 4% | 4% higher | 62% (49%) |
| Corona, California | #4 | 96 | 2% | about the same | 26% (36%) |
| Hemet, California | #4 | 92 | 2% | 4% higher | 65% (62%) |
| Rialto, California | #4 | 76 | 3% | 6% higher | 32% (64%) |
| West Covina, California | #4 | 55 | 3% | about the same | 47% (39%) |
| Norwalk, California | #4 | 54 | 5% | 10% lower | 50% (42%) |
| Perris, California | #4 | 51 | 2% | 7% lower | 49% (52%) |
| Hawthorne, California | #4 | 14 | 4% | — | 29% (37%) |
| San Bernardino, California | #5 | 116 | 3% | about the same | 52% (52%) |
| Ontario, California | #5 | 100 | 2% | 24% higher | 38% (44%) |
| Oxnard, California | #5 | 43 | 3% | about the same | 35% (43%) |
| El Monte, California | #5 | 18 | 4% | — | 56% (42%) |
| Lancaster, California | #6 | 131 | 3% | 17% higher | 42% (46%) |
| Fontana, California | #6 | 118 | 2% | 4% higher | 59% (54%) |
| Riverside, California | #6 | 68 | 2% | 9% higher | 35% (46%) |
| Orange, California | #6 | 36 | 2% | — | 69% (28%) |
| Huntington Beach, California | #6 | 32 | 1% | 5% lower | 16% (29%) |
| Victorville, California | #7 | 96 | 2% | 13% higher | 64% (56%) |
| Santa Clarita, California | #7 | 41 | 2% | about the same | 42% (39%) |
| Fullerton, California | #7 | 34 | 2% | 11% higher | 21% (29%) |
| Richmond, California | #7 | 29 | 2% | 3% lower | 21% (33%) |
| Garden Grove, California | #7 | 28 | 2% | 21% higher | 46% (28%) |
| Salinas, California | #8 | 29 | 2% | about the same | 24% (40%) |
| Santa Maria, California | #8 | 26 | 2% | 15% lower | 39% (60%) |
| Los Angeles, California | #8 | 23 | 3% | 3% lower | 35% (37%) |
| Murrieta, California | #9 | 59 | 2% | 10% higher | 59% (47%) |
| Long Beach, California | #9 | 54 | 2% | 11% higher | 59% (32%) |
| Rancho Cucamonga, California | #9 | 22 | 1% | — | 55% (38%) |
| Downey, California | #9 | 21 | 3% | — | 43% (33%) |
| Ventura, California | #9 | 21 | 1% | — | 43% (24%) |
| Costa Mesa, California | #9 | 15 | 2% | — | 27% (28%) |
| Temecula, California | #10 | 55 | 1% | 2% lower | 51% (43%) |
What ESP (Energy Service Partners) Installs
- Typical system size
- 7.0 kW
- Leased or on a PPA
- 43%
- Installed with a battery
- 46%
Sells both owned systems and leases or PPAs.
Panel brands
- Aptos Solar (54%)
- Qcells (15%)
- Hanwha Q CELLS (11%)
Inverter brands
- SolarEdge (54%)
- Enphase Energy (37%)
- Tesla (5%)
ESP (Energy Service Partners) Prices Compared With the State
Median price per watt of systems the homeowner bought outright, before incentives.
| State | ESP (Energy Service Partners) | State median | Difference |
|---|---|---|---|
| California (2023–2025) | $4.52/W | $4.25/W | 6% higher |
Home Installations per Year
Records for the most recent year can be incomplete while utilities finish reporting.
Where ESP (Energy Service Partners) Installs Most
| City | Installations (2023–2025) |
|---|---|
| Palmdale, CA | 157 |
| Lancaster, CA | 131 |
| Moreno Valley, CA | 129 |
| Fontana, CA | 118 |
| San Bernardino, CA | 116 |
| Hesperia, CA | 108 |
| Ontario, CA | 100 |
| Santa Ana, CA | 98 |
| Corona, CA | 96 |
| La Puente, CA | 96 |
| Victorville, CA | 96 |
| Bakersfield, CA | 95 |
| Simi Valley, CA | 93 |
| Hemet, CA | 92 |
| San Jose, CA | 82 |
Specialist Rankings
Where ESP (Energy Service Partners) ranks among the companies that install the most systems with a battery or with a given inverter brand.
- Solar Battery Installers in Palmdale, CA: #3 (80 systems)
- Solar Battery Installers in Simi Valley, CA: #3 (75 systems)
- Solar Battery Installers in Thousand Oaks, CA: #3 (44 systems)
- SolarEdge Installers in Palmdale, CA: #4 (80 systems)
- SolarEdge Installers in Lancaster, CA: #4 (61 systems)
- Solar Battery Installers in West Covina, CA: #4 (24 systems)
- Solar Battery Installers in Lancaster, CA: #5 (65 systems)
- Enphase Installers in Palmdale, CA: #5 (64 systems)
- Solar Battery Installers in Fontana, CA: #5 (61 systems)
- Enphase Installers in Fontana, CA: #5 (61 systems)
- Solar Battery Installers in Hemet, CA: #5 (45 systems)
- Solar Battery Installers in Moreno Valley, CA: #5 (37 systems)
Other Top Installers in Moreno Valley
The companies ranked next to ESP (Energy Service Partners) in Moreno Valley, by home installations in 2023–2025.
| Company | Installations | Median price | Leased / PPA |
|---|---|---|---|
| Sunrun | 862 | $4.47/W | 89% |
| Bright Planet Solar | 373 | $5.48/W | 90% |
| Better Earth | 87 | $5.88/W | 43% |
| Exo Energy | 79 | — | 99% |
| Tesla | 69 | $3.83/W | 0% |
| Greenspire | 66 | $5.10/W | 0% |
ESP (Energy Service Partners): Common Questions
Is ESP (Energy Service Partners) still in business?
ESP (Energy Service Partners) 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: its California license (CSLB #619149) shows whether it is active, and recent Google reviews show whether it is still answering customers.
Does ESP (Energy Service Partners) lease solar panels or sell them?
43% of its home systems in 2023–2025 were leased or on a power purchase agreement, and 57% were bought by the homeowner. Sells both owned systems and leases or PPAs.
What solar panels and inverters does ESP (Energy Service Partners) install?
Panels: Aptos Solar (54%), Qcells (15%) and Hanwha Q CELLS (11%). Inverters: SolarEdge (54%), Enphase Energy (37%) and Tesla (5%). Shares of its home systems in 2023–2025 with a known brand.
How much does ESP (Energy Service Partners) charge for solar?
In California (2023–2025), homeowners who bought a system from ESP (Energy Service Partners) paid a median of $4.52/W before incentives — 6% higher than the state median of $4.25/W. For its typical 7.0 kW system, that is about $32,000. By city: 9% lower than the Moreno Valley median; 33% higher than the Santa Ana median; 8% higher than the Simi Valley median.
Does ESP (Energy Service Partners) install solar batteries?
46% of its home systems in 2023–2025 included a battery. It ranks among the top battery installers in Palmdale, CA, Simi Valley, CA, Thousand Oaks, CA.
Where does ESP (Energy Service Partners) install solar?
Most of its recent work is in Palmdale (157), Lancaster (131), Moreno Valley (129), Fontana (118) and San Bernardino (116). It is ranked in 37 cities in California.
Before You Sign With ESP (Energy Service Partners)
- California license: CSLB #619149 (B, C-10), issued 05/11/1991, registered to ESP CONTRACTING in Torrance. It appears in the state's list of active licenses. Check its current status on the CSLB site.
- Reviews and contact details: call (866) 865-4559 (the number on its license) or see ESP (Energy Service Partners) 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 ESP (Energy Service Partners) with other installers
The Moreno Valley ranking puts ESP (Energy Service Partners) next to the other companies that install the most there, with each one's price and leasing share.
Top solar installers in Moreno Valley →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.