Energy Service Partners (ESP) Reviews
A company’s ratings are a time-based and verification-based weighted average numerical calculation of the ratings submitted by consumers in the most recent 24-month period.
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About Energy Service Partners (ESP)
Energy Service Partners (ESP) specializes in residential solar installation and roofing. It offers products from Qcells, Enphase Energy, and SolarEdge. Its service area is California and Texas.
Visit www.joinesp.com
Energy Service Partners (ESP) Reviews
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Our review standards
- Our moderation team evaluates reviews to make sure they meet our guidelines.
- We require contact information to verify reviews come from real customers.
- Financial relationships do not influence whether we publish a consumer review.
Reviewed Dec. 23, 2025
The work was originally scheduled to begin on September 7, 2024, but did not commence until January 2025. I was informed that the installation would take approximately three weeks; however, the project was not completed until the end of March 2025, and only after repeated complaints regarding unfinished and defective work. The system was inspected in early April 2025, at which time I was advised that it was operational and usable. Both my contract and ESP’s representative, Geo, stated that the system would make my home self-sufficient and eliminate my electric bill. Despite these representations, I have continued to receive an electric bill every month since the system was approved.
When I raised this issue with ESP, I was repeatedly told that everything appeared normal on their end. I contacted PG&E directly to determine how much electricity I was drawing from the grid and was informed that I have been drawing power from the grid every month since the final solar inspection. After I relayed this information to ESP, they sent a third-party technician to evaluate the system. The technician determined that the system wiring had been crossed. As a result, ESP’s monitoring showed the system functioning properly, while the battery was unable to deliver power to my home.
The technician also found that four to five solar panels were not producing or registering the expected energy output. He contacted Tesla, the manufacturer of the system components, and was advised that the most likely cause was improper wiring of the panels. The technician reported these findings to ESP. Instead of correcting the wiring defects, ESP closed my service ticket. I was not contacted again for approximately two months, and only after I indicated that I would retain legal counsel. ESP has since claimed that a report from Tesla shows the system is functioning properly and has refused to correct the improperly wired panels or complete the installation as contracted.
Reviewed Aug. 20, 2024
Terrible customer service. Had some issues come up after install and they take months to get to you. Seems like they are drastically under staffed. The NEW aggregation paperwork got mixed up and now I have a massive true-up bill coming. I notified them of this issue in January 2024 and 8 months later, they have done nothing to remedy the issue. Warranty issues take several weeks for a response. Very difficult to actually speak to someone that knows how to answer a question.
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Energy Service Partners (ESP) service areas
ESP covers the state of California and Texas.
Average solar cost by service area
Solar panel costs vary based on your location and other factors. The map below shows average overall prices in Energy Service Partners’ service areas to give you a general idea of what to expect. Your specific energy needs, panel efficiency and other variables could make your costs higher or lower than these averages.
Average solar panel cost by state
| Average cost per watt | Typical system size | Average cost after ITC | Payback period | Estimated net savings | |
|---|---|---|---|---|---|
| California | $2.52 | 8.35 kW | $11,466 | 9 years | $30,000 |
| Texas | $2.25 | 12.78 kW | $21,654 | 8.9 years | $21,350 |
Note: Costs in this table are average costs for the state and do not represent specific company pricing. "Average cost after ITC” reflects the cost after receiving the full 30% solar investment tax credit (ITC). “Estimated net savings” is the average amount residents in that state will save on electricity over 25 years, including their cost of installing a solar energy system.
» EXPLORE: California solar incentives
Equipment brands sold by Energy Service Partners (ESP)
As a solar installer, ESP does not manufacture its own equipment. The company offers equipment from the following brands:
- Qcells
- Enphase Energy
- SolarEdge
- Owens Corning
FAQ
Does ESP offer a warranty?
ESP offers a 25-year limited warranty on workmanship and a 10-year limited warranty on roof work.
What payment options does ESP offer?
You can pay for products and services from ESP with cash, loans, leases or power purchase agreements.
When was ESP founded?
ESP was founded in 2015.
Still have questions?
How Energy Service Partners compares
Compare Energy Service Partners on customer reviews, availability and payment options below. Read our guide to finding the best solar energy company for more.
| Company | Customer rating | Availability | Payment options | |
|---|---|---|---|---|
Energy Service Partners (ESP) | Learn More | 1.0 | California | Cash, loan, lease, PPA |
 SunPower | Learn More | 3.3 | 21 states | Cash, loans, lease and PPA |
Energy Service Partners (ESP) Company Information
- Company Name:
- Energy Service Partners (ESP)
- Year Founded:
- 2015
- Address:
- 970 W 190th St #302
- City:
- Torrance
- State/Province:
- CA
- Postal Code:
- 90502
- Website:
- www.joinesp.com