Solar Companies in Corona, CA: Who Installed the Most Systems in 2025

Installers who connected the most home solar systems in Corona 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).

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

Home solar in Corona by the numbers

SCE approved 1,121 home solar systems in Corona in 2025, from 144 installers; the top three were named on 48% of them. The busiest year since 2021 was 2023, with 2,422 (2025: -54%). Another 447 were approved from January through May 2026.

2025 mix: 54% leased or on a power purchase agreement, 46% owned by the household; 74% with a battery; median size 7.44 kW DC. Riverside County: 57% leased or PPA, 75% with a battery, median 6.48 kW.

Hiring a solar company in Corona

Corona is split between two electric utilities: Southern California Edison serves most of the city, and the City's own Utilities Department serves its electric service area. Solar companies file the permit with the City through eTRAKiT, as an expedited plan check or a Symbium permit, and need the serving utility's approval before starting work. City of Corona customers no longer get net metering at first. Compare at least three written bids built on your own bill.

Start with your Corona electricity bill

Find the utility's name on your bill before you compare any estimate. Most Corona homes are Southern California Edison customers, but the City of Corona runs its own electric utility in part of town, and the two have different prices and different solar rules. A proposal that uses SCE's numbers for a City of Corona account, or the reverse, is modeling a bill you do not have.

Two utilities in one city

Corona's electric utility dates to April 4, 2001, when the City Council created it by Resolution No. 2001-25 in response to the statewide rolling blackouts and electric price instability. It provides fully bundled service to homes and businesses within the City's electric service area, and new developments inside that area become its customers if capacity is available. The City puts its current peak demand at 25.8 MW. Everywhere else in Corona, SCE delivers the power and sends the bill. On the California Energy Commission's utility map, about 97% of the city's area lies in SCE territory and about 3% in the City's.

The City's residential rate is tiered: a $16.54 monthly fixed charge, then $0.10504 per kWh up to baseline, $0.11544 from 101% to 130% of baseline and $0.21840 above that, plus a public benefits charge of $0.00405 per kWh. Those are the City's prices, not SCE's. A proposal for an SCE address should use the SCE rate schedule printed on your bill.

The City's net metering cap and the ERG schedule

The City of Corona offered net energy metering first come, first served, until the solar capacity on its system reached 5 percent of its aggregate customer peak demand. The City says total capacity, counting pending applications, reached that level in March 2024. New applications now go on the Eligible Renewable Generation (ERG) rate schedule, which the City Council approved on June 5, 2024, and onto a waiting list for net metering. The utility reviews its solar customers once a year, and if capacity opens, ERG customers move to net metering in order of their original permission-to-operate date. Under the ERG agreement, the City pays for power sent to the grid only if the customer assigns the system's renewable energy credits to the City.

The City's interconnection steps run in a fixed order. The utility needs a completed application, the solar review fee, a building permit pulled at the time of application and signed off before permission to operate, an electrical single-line diagram, a load schedule and a site plan. The load schedule compares 12 months of kWh use with the system's estimated monthly production: the estimated output may not exceed the previous year's use, and with less than 12 months of history the City applies a standard of 2 watts per square foot of the premises. Once the application is approved, the City drafts the agreement, installs and tests a bi-directional meter, and only then issues permission to operate.

Filing the permit in eTRAKiT

For an expedited plan check, the City's package includes an application form, an eligibility checklist, a standard plan and a structural criteria form, with separate versions for central-inverter and microinverter systems. The submittal also needs a roof plan and installation or spec sheets for every component, as PDFs printed at no larger than 11 by 17 inches. Plan check processing does not begin until the fee is paid.

The Symbium route starts outside the City: the contractor gets Symbium's approval documents, then applies in eTRAKiT under the Symbium Solar permit type with those documents and the City's forms, and pays the fees. The City's guide says staff review the submittal within one business day at the latest and issue the permit immediately if nothing is missing. Both routes start by confirming the address is inside Corona city limits. On a City of Corona meter, the Utilities Department does not allow a Tesla Backup Switch or similar device on the meter itself; it has to go downstream in a separate panel or meter enclosure, with the utility's design approval first.

SCE's Solar Billing Plan for the rest of Corona

On an SCE account, a new system goes on SCE's Solar Billing Plan. Power sent to the grid earns Energy Export Credits that change by hour and season, with higher values in June through September, and SCE locks the values for nine years based on the year a new customer starts. Customers who enroll before 2028 also get an Energy Export Bonus Credit of about $0.04 per kWh, or about $0.09 for income-qualified customers. The credits cannot pay the Base Services Charge, and the once-a-year settlement bill arrives in the month the system started service.

SCE itself says its export credits are worth less than what you pay for power from the grid, and that storing daytime output to use in the expensive evening hours is now worth more than exporting it. That is why a Corona bid for an SCE home should show how much of the output the house uses directly, and whether a battery changes the result.

What a Corona quote needs to explain

A comparison to ask for

Ask two bidders to size the system from your last 12 months of kWh use and to show the monthly output next to it. On a City of Corona account the utility will not accept a system whose estimated annual output is larger than that usage, so a design sized for a future EV or pool may have to wait. On an SCE account, ask how much of the output the house uses directly, because SCE says export credits are worth less than the power you buy.

Verify the company behind the Corona quote

Match the business name and license number on each Corona proposal to the CSLB record, then use our contractor verification steps, the quote comparison guide and the PPA, loan, lease and cash comparison.

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

Corona solar quote questions