Comparing Solar Companies in Los Angeles: What Matters More Than a Top-10 List

Two installers can promise similar savings for a Los Angeles home while relying on different utility rates, equipment and financing assumptions. Ask each one to show the numbers behind the promise.

First confirm which utility serves the property—LADWP and Southern California Edison do not use identical solar billing rules. Then compare contractor credentials, the same project scope, annual production estimates, remaining electric bills and service obligations.

Quick answer: how should Los Angeles homeowners compare solar companies?

Compare at least three written proposals built from the same electricity-use history and the same plans, specifications and scope of work. Verify the legal contractor and any applicable salesperson registration, confirm the home's actual electric utility, then compare cash price, equipment, modeled annual production, remaining utility bill, financing and service responsibilities.

This guide does not rank Los Angeles solar companies or claim that every provider shown on Home Solar Simplified has been independently vetted. A ranked list cannot establish which design fits a particular roof, utility account and budget. Use official records and written proposals to answer four questions: Can this contractor legally do the work? Does the proposed equipment fit this property? Is the total cost defensible? And who is responsible after installation?

First, confirm whether you have LADWP or another utility

Los Angeles is not one interchangeable electric-service market. Many City of Los Angeles properties receive power from the Los Angeles Department of Water and Power (LADWP), while parts of greater Los Angeles County are served by Southern California Edison or other municipal utilities. Check the provider and rate schedule printed on the actual bill before allowing any salesperson to calculate savings.

CPUC's Solar Billing Plan or Net Billing Tariff for participating investor-owned utilities should not automatically be applied to LADWP accounts. The installers you compare must name the exact applicable utility program, interconnection process and export-credit assumptions. If a quote contains only 'California NEM 3.0' without checking your utility, ask for a corrected calculation.

Compare the same solar design specifications

Request at least three bids based on the same twelve months of electricity usage and the same plans, specifications and scope of work. Ask for the proposed DC system size, expected annual kWh output, roof layout, shade estimate, inverter arrangement, panel model, battery model if applicable, and a description of work outside the equipment installation.

Pay attention to roof age and structural requirements. Flat roofs, tile roofs, multistory access, electrical upgrades and battery locations can affect cost and timing. If one company recommends a much larger system, ask how it arrived at that size and whether it expects future loads such as an electric vehicle or heat pump. Bigger does not necessarily mean better.

The comparison sheet that cuts through marketing

For each bid, record: contracting legal name and CSLB license; total cash price; system size (kW DC); annual estimated production (kWh); roof, permit and electrical-work exclusions; panel/inverter/battery equipment; utility tariff; predicted remaining utility bill; financing APR and total payments if applicable; workmanship warranty; equipment warranty; maintenance contact; and expected permission-to-operate schedule.

A company offering a lower monthly payment may be extending the loan term, increasing financed principal through dealer fees, or assuming a future principal reduction from an incentive that is not available. Compare the cash price, loan disclosures and total repayment without assuming a tax credit. Conversely, the highest cash price may include necessary roof or electrical work missing from competing proposals. Get written revisions before treating those offers as comparable.

Verify contractor credentials through the state

Use the California Contractors State License Board's public lookup to check the actual contracting company. Confirm active licensing and the appropriate classification, and review available bond, insurance and disciplinary information. The CPUC Solar Consumer Protection Guide also advises checking home improvement salesperson registration where applicable.

Do not assume an installer is licensed merely because it has a Los Angeles address, glowing testimonials, manufacturer badges or advertisements in local search results. Check which entity signs the agreement, obtains permits and guarantees workmanship. For work subcontracted to another business, request that subcontractor's details too.

Scrutinize electricity-savings predictions

Ask each installer to show the expected remaining utility charges after solar using the rate schedule on your own bill. Separate electricity used directly at home, avoided grid purchases, electricity exported, and any applicable export compensation. The time when your home uses electricity matters, particularly when rate schedules vary by hour. If the company proposes a battery, ask for separate estimates with and without storage using the same household assumptions.

Be suspicious of any 'zero electric bill guaranteed' claim. Utility accounts may retain minimum, fixed or other charges; consumption and generation can change; and financing payments are additional obligations. Assess combined household energy spending, not just the portion of the utility bill highlighted in an advertisement.

Understand LA permitting and the installation timeline

Ask who prepares the plans, submits the permit, schedules inspections and applies to the actual utility for interconnection. For an LADWP project, require the installer to identify the applicable interconnection pathway and obtain LADWP Permission to Operate before representing the system as ready for normal grid-connected operation. The relevant building department depends on the property's jurisdiction; not every mailing address that says 'Los Angeles' is within the City of Los Angeles. Do not accept a guaranteed approval date unless the contract actually provides a clear remedy.

Have the contractor specify whether roof reinforcement, service-panel upgrades, battery-related electrical work or utility changes are included in the quoted price. Require written change orders before paying for work that was not in the original scope.

Consider service after the system is switched on

Ask whether the contractor has technicians who service existing customers in your community. Establish how a monitoring alert becomes a service visit, whether warranty labor is covered, who pays for roof access and what happens if a manufacturer replaces a component with a different model.

Also ask what happens if the installer ceases operations. Manufacturer warranties may still apply, but labor and workmanship promises may depend on the business that issued them. Save your equipment list, permits, permission-to-operate notice, monitoring credentials and complete contract package.

When solar may not be the right next purchase

A damaged roof, heavy shade, a very short expected ownership period, unusually expensive financing or a low-energy household can make the project less attractive. Sometimes the first action should be investigating abnormal electric use, improving efficiency or replacing an aging roof.

A credible company should be willing to recommend further analysis, a smaller system, efficiency improvements or postponing installation when the numbers do not justify the project. If every quote promises identical savings despite different designs, ask where the numbers came from.

Compare warranty promises with actual service responsibilities

For each Los Angeles installer, list the manufacturer equipment warranty, installation workmanship coverage, roof-penetration coverage and any production guarantee separately. Ask which legal company handles each claim and whether labor, travel, shipping or panel removal is excluded.

Confirm the name of the service contact and what happens if the original installer closes or the equipment maker changes its warranty process. Save the contract, equipment serial numbers, commissioning records and permission-to-operate notice so a future service company can identify the system.

Compare bids only after each contractor explains the same roof work, permit responsibilities, utility-specific billing assumptions and post-installation service. A longer warranty headline is not automatically better if the actual remedy and exclusions are unclear.

Choose based on evidence—not a leaderboard

Begin with the actual utility bill and roof conditions. Verify a shortlist of contractors with CSLB, gather three written bids, compare like-for-like designs and read every finance and warranty term. Home Solar Simplified's guides and provider resources can help you prepare and discover options, but they are not substitutes for independent verification.

A well-chosen installer should be able to defend its design even after you remove the rankings, incentives and sales language from the proposal.

Frequently asked questions

Questions worth asking

• What utility serves my Los Angeles home—LADWP or SCE?
• Does NEM 3.0 apply to LADWP customers?
• What licenses should a Los Angeles solar installer have?
• How do I compare solar quotes with different system sizes?
• What permits and utility approvals are needed?
• How many bids should I obtain before signing?