Questions are informed by public homeowner discussions. Answers use the sources below; community stories are context, not verified diagnoses. About the research.
What should I check before signing with a solar installer?
Match the contractor’s legal name and license number on the proposal with CSLB’s live record. Review the license status, classifications, bond information and workers’ compensation information, then identify who will actually perform the roofing and electrical work. A salesperson’s brand name may not be the contracting business.
Request a written scope, equipment schedule, exclusions, project milestones and warranty documents before committing. Ask how changes discovered after the site visit will be priced. Read recent service experiences as well as installation reviews, but verify specific claims independently. Strong sales communication does not establish who will answer a service request several years later.
How much deposit can a California solar contractor request?
For a California home improvement contract, CSLB states that the down payment cannot exceed the lesser of $1,000 or 10% of the contract price, excluding finance charges. Residential solar work falls within the home improvement rules. A new label such as a scheduling payment does not, by itself, explain why a larger upfront demand would be acceptable.
Check the signed payment schedule and what each later installment represents. Ask the contractor to correct a questionable payment request in writing before paying it. Financing disbursements and equipment-delivery claims deserve the same careful review; get CSLB guidance if the proposed arrangement is unclear.
Sources for the answer: California Contractors State License Board: Home improvement contract requirements
Community context: r/solar discussion (2025-08-29) · r/solar discussion (2023-09-21)
Link to this answerWhy can installed panels wait months for permission to operate?
Physical installation is only one milestone. Required inspections, correction work, the interconnection application and utility approval may still be outstanding. “Waiting on the utility” is not a useful explanation unless the responsible party can identify the submission, the current status and the next action.
Request the permit number, inspection result, utility application reference and a dated list of missing items. Assign an owner and expected response date to each item. Keep loan-start dates and any promised delay reimbursement visible in that record. This makes it possible to distinguish a utility processing delay from paperwork or commissioning the installer has not completed.
My panels are installed. Must I wait for utility approval before switching them on?
Do not assume that completed installation or a passed building inspection authorizes parallel operation with the utility. Follow the utility’s written permission and the installer’s approved commissioning process. SCE specifically addresses updated permission to operate when additional equipment is installed.
If someone says temporary operation is permitted, ask for the applicable written authorization and the conditions it imposes. Do not rely on forum suggestions to flip a switch or hide exports while waiting. The constructive route is to identify the outstanding approval and have the responsible installer or utility contact resolve it.
What if loan payments start before the solar system is working?
Read the loan agreement and installation contract together. The event that starts financing may differ from the event that makes the system usable. Identify any written commitment to reimburse delays and the conditions for claiming it. Do not assume that an installation dispute automatically suspends a separate loan obligation.
Create a dated record of installation, inspection, interconnection and commissioning. Ask the installer and lender, in writing, what remedies apply to the unfinished work and the payment schedule. For a financing problem, the CFPB complaint process is a separate avenue from a California contractor complaint. Keep records of both tracks.
Sources for the answer: Consumer Financial Protection Bureau: Solar financing report (2024; financing practices, not current tax eligibility) · California Contractors State License Board: Solar complaint process
Community context: r/solar discussion (2021-06-10) · r/solar discussion (2025-08-29) · r/solar discussion (2024-12-29)
Link to this answerWho fixes my solar system if the original installer goes out of business?
Start by separating the manufacturer’s equipment warranty from the installer’s workmanship and service obligations. A manufacturer may still support a covered component, while diagnosis, roof access, shipping or labor are handled differently. Closure of the installer does not tell you which parts of the original protection remain usable.
Gather serial numbers, purchase documents, warranty terms, permit records and monitoring access. Ask the manufacturer which qualified providers can service the system and what it will cover. Obtain a written quote from a replacement provider. If there is a California contract or workmanship dispute, CSLB can explain its complaint process; recovery should not be assumed.
Sources for the answer: Tesla: Solar service and warranty terms · California Contractors State License Board: Solar complaint process
Community context: r/solar discussion (2026-03-19) · r/solar discussion (2024-05-05)
Link to this answerWhat is the difference between a panel warranty and a system warranty?
A panel warranty may address a manufacturing defect or a stated decline in output under defined conditions. Workmanship coverage concerns installation work. Roof penetration coverage, inverter coverage, battery coverage and any whole-system production promise can have separate terms and different parties responsible.
Make a one-page table listing each promise, its provider, duration, exclusions and claim process. Add who pays for diagnosis, access and labor, and whether coverage transfers to a buyer. Avoid compressing all of this into “25-year warranty.” The useful question is what happens when a particular component fails or the roof needs work in a particular year.
Why am I being charged for a visit when the system is under warranty?
Coverage may depend on what caused the problem, and the service provider may charge for diagnosis before that is established. A warranty also may cover a component without covering every labor or access cost. A quoted visit fee is therefore a reason to clarify the terms, not immediate proof that the warranty is worthless.
Before booking, ask what the fee includes, when it is waived or refunded, and what further work requires your approval. Request the diagnosis in writing, with the warranty clause used to accept or deny coverage. Keep the original quote and any changes so the invoice can be checked against the agreed scope.
Sources for the answer: Tesla: Solar service and warranty terms · Tesla: Panel removal and reinstallation: scope and responsibilities
Community context: r/solar discussion (2023-07-12)
Link to this answerWhat evidence helps when the system underperforms or the installer will not respond?
Keep the signed production promise, its measurement period and exclusions alongside actual production records. Separate a forecast from a contractual guarantee. A weather model that estimated a certain output is not necessarily a promise to pay compensation if that output is missed.
Build a concise timeline containing dates, system alerts, service requests, responses and any independent inspection findings. State the remedy you are requesting and ask for a written answer. California’s solar complaint process accepts supporting contracts, payment records and other evidence. Avoid relying on a public review as the only record; a clear file is more useful for diagnosis, negotiation and a formal complaint.
Sources for the answer: California Contractors State License Board: Solar complaint process · National Laboratory of the Rockies: PVWatts: production estimates and model limitations
Community context: r/solar discussion (2026-08-08) · r/solar discussion (2024-12-29) · r/solar discussion (2023-07-28)
Link to this answer