Compare solar quotes by matching the system, assumptions, and contract scope before comparing the monthly payment. A low payment can describe a different system, a longer commitment, or a proposal that leaves out work another bid includes.
A useful quote review should leave you with a clear picture of what will be installed, who is responsible for it, and what you will pay. Use the following questions to organize proposals for your Southern California home.
1. Are the proposals solving the same problem?
Write down your priorities: reducing utility purchases, adding outage backup, preparing for an electric vehicle, or a combination. Ask each provider to design around the same usage records and priorities. A backup-focused project should not be compared with a solar-only bid as if the scopes were identical.
2. What equipment and rated size are included?
Request panel quantity, panel wattage, inverter model, and total DC array capacity. Confirm the exact models in the final equipment schedule. Product names alone do not establish a system’s size or output.
3. What annual production is modeled, and why?
Ask for the production estimate plus roof orientation, shade assumptions, and modeled losses. Ask what changes after the site visit. If two proposals predict different output from similar arrays, have each provider explain the difference rather than choosing the larger number.
4. Which utility plan does the bill estimate use?
Confirm the utility, rate schedule, export-credit treatment, and any generation provider. Ask whether the comparison includes remaining electricity purchases and fixed charges. A county name is not a tariff, and an annual production total is not a complete bill model.
5. What is the complete price for the same scope?
Request itemized pricing for panels, inverters, storage, backup equipment, permitting, and electrical work. For a purchase, compare a written cash price with financing terms separately. For a lease or power purchase agreement, ask for the payment schedule, term, and escalation provisions. Review our solar financing overview alongside the actual documents.
6. Is price per watt being used fairly?
For a simple purchase example, $24,000 divided by an 8,000-watt solar array equals $3 per watt. That arithmetic is useful only after you identify what the price includes. Do not use a solar-only price per watt to judge a package containing a battery, a roof project, or major electrical work.
7. Does the battery scope include outage backup?
Request usable energy capacity, power ratings, backed-up circuits, and any required control equipment. Ask the designer to show what can operate simultaneously. A battery listed on the proposal does not, by itself, define the outage performance.
8. Which costs remain uncertain?
Ask about roof repairs, electrical upgrades, trenching, permit revisions, and equipment substitutions. Request the change-order process and identify which findings could change the price. A clear allowance is easier to evaluate than a verbal promise that additional work will probably be unnecessary.
9. Who will perform and support the work?
Identify the contracting company, installer, any subcontractors, and service contact. The CPUC’s consumer guide recommends comparing bids from at least three qualified providers and checking contractor credentials. Ask for the relevant license information and verify it independently.
10. What do the warranties actually cover?
Separate equipment, workmanship, roof-penetration coverage, and any production commitment. Ask who pays labor, diagnostic visits, shipping, and removal or reinstallation when applicable. Obtain the actual warranty documents. A long headline term is less informative than the coverage and claim process.
11. What happens if I sell or need roof work?
Have the provider point to the relevant transfer, removal, and reinstallation terms. Request a written explanation of any fees or approvals. Do not assume that an advertised transferable agreement has no conditions.
12. Which forecast assumptions drive the savings?
Ask to see the utility escalation, system degradation, storage assumptions, and excluded expenses. Request an alternative scenario with less favorable assumptions. The FTC’s solar guidance encourages detailed bid and contract comparisons and cautions that future electricity rates are difficult to predict.
Frequently asked questions
Is the cheapest solar quote always best?
No single price determines fit. Compare the complete scope, design quality, responsibilities, and contract terms before deciding.
What should I bring to a quote review?
Bring all proposal pages, 12 months of electricity use, the utility rate name, and a list of your backup or future-use goals. Include financing and warranty documents.
Our assessment can help organize questions about an Axia by Qcells proposal. It is a sales consultation, not an independent ranking of every installer.
Want to understand the options for your property? Request a free solar assessment. Los Angeles Solar Advisory helps homeowners in Los Angeles, Riverside, and Ventura counties explore solar options through consultations representing Axia by Qcells. Your proposal should reflect your home, utility, and contract terms.