Solar Companies in Glendale, CA: Installer Counts and License Checks

Installers who connected the most home solar systems in Los Angeles County in 2025

Counts from utility records, not a ranking or endorsement. Check each license's status and complaint history on the CSLB's Check a License page (checked Sept. 24, 2026). The data set covers PG&E, SCE and SDG&E customers only, so in Los Angeles County it counts the areas SCE serves.

Source: California Distributed Generation Statistics (CPUC), Interconnected Project Sites data set, data through May 31, 2026 (checked Sept. 24, 2026).

Home solar in Los Angeles County by the numbers

SCE approved 16,116 home solar systems in Los Angeles County in 2025, from 613 installers; the top three were named on 36% of them. The busiest year since 2021 was 2023, with 28,035 (2025: -43%). Another 7,647 were approved from January through May 2026.

2025 mix: 47% leased or on a power purchase agreement, 53% owned by the household; 79% with a battery; median size 6.56 kW DC.

Hiring a solar company in Glendale

In Glendale, the utility approves a solar project before the City does: Glendale Water & Power reviews the contractor's PowerClerk application in 3 to 5 business days, then Building and Safety issues the permit, and after inspection GWP reprograms the meter in 7 to 10 working days. GWP sets its own net metering and sizing rules, so compare at least three written bids built on your own GWP bills.

GWP's approval, then the City's permit

Glendale Water & Power publishes the sequence for a residential system under 15 kW CEC-AC. The contractor submits the interconnection application, with storage if any, through PowerClerk, together with a signed Interconnection Agreement whose CEC-AC rating matches PowerClerk's calculation, an executed election form, a complete plan set with equipment data sheets and photos of the service panel, a spot drawing if the panel is being upgraded, and a shading report (waived for systems of 10 kW CEC-AC or less). Since January 19, 2026, GWP accepts only its Interconnection Agreement dated January 1, 2026.

GWP reviews the application in 3 to 5 business days and then directs the contractor to submit the plan set to Building and Safety through the Glendale Permits portal, where building, electrical and fire staff review it and the permit fees are paid; Building and Safety is at (818) 548-3200. The contractor schedules the inspection through Glendale Permits. After it passes, GWP Engineering sends a work order to its field crews to reprogram the meter for net metering, which takes 7 to 10 working days, and then the system gets permission to operate.

GWP's sizing and storage rules

Since November 1, 2023, residential and commercial systems up to 10 kW CEC-AC are exempt from GWP's 110% historical-usage cap, and a system of that size may be paired with up to 30 kWh of storage. The contractor self-certifies the sizing need in PowerClerk. Above 10 kW, GWP estimates your annual load as 110% of your last 12 months of usage and compares it with the system's estimated production. GWP no longer requires a separate meter for home energy storage.

GWP credits excess solar generation to your account and applies the credit automatically when it is needed. Questions go to GWPSolarSolutions@glendaleca.gov or 818-548-2750. A bid that does not mention the 10 kW line, the 30 kWh storage allowance or the meter reprogramming step was probably written for SCE territory.

What a Glendale quote needs to explain

A comparison to ask for

Two Glendale bids for a 12 kW system and a 9.5 kW system are not only different sizes: under GWP's rules the larger one must be justified against 110% of your last 12 months of usage, while a system of 10 kW or less is exempt from that cap and self-certified. Ask each bidder to show which rule its design falls under and the usage figures it used.

Verify the company behind the Glendale quote

Match the business name and license number on each Glendale proposal to the CSLB record, then use our contractor verification steps, the quote comparison guide and the PPA, loan, lease and cash comparison. What you pay the utility today is on the Glendale rates and bills page.

Permit fees and the filing route are on the Glendale solar cost and permit page.

Glendale solar quote questions