Our Methodology: How We Evaluate California Solar Installers
How we research, what data we use, what disqualifies a recommendation, and how often we refresh content.
California Rate Relief evaluates solar installers, financing options, and rate programs available to California homeowners. We are a research-led publication; we read CSLB licensing records, BBB complaint files, court records, financing contracts, and homeowner reports, then write what we find. This page documents how we do that.
What we evaluate
License & insurance status
CSLB C-46 license active and in good standing; bond filed; workers-comp on file; appropriate liability coverage for the installer's service area.
Complaint patterns
BBB complaint volume relative to install count, not raw count. CSLB disciplinary actions. Small-claims court filings. Pattern-of-conduct, not a single bad install.
Financing transparency
Whether the company quotes cash price, loan price, and lease/PPA price clearly; whether dealer fees are disclosed; whether escalator clauses are explained.
Installation quality signals
Permitting compliance, inspection pass rate, equipment vendor relationships, employee vs subcontractor crews, monitoring quality.
Customer service post-install
Warranty claims handling, monitoring response, the "what happens when it breaks in year 12" question.
Data sources we use
- California Contractors State License Board (CSLB) public records
- Better Business Bureau (BBB) complaint files
- California Department of Insurance bond and license registry
- Court of California Superior Court records (small claims and civil)
- Public NEM 3 enrollment data from CPUC
- Direct interviews with homeowners (when arranged)
What disqualifies a recommendation
If any of the following are true, we will either decline to recommend the product, downgrade its rating, or publish a cautionary page rather than a normal review:
- Inactive or suspended CSLB license
- Pattern of unresolved complaints exceeding 1.5% of install count
- Bankruptcy filing or shutdown announcement (we publish a defunct-cautionary page rather than a normal review)
- Documented bait-and-switch financing or dealer-fee non-disclosure
- Refusal to provide written contracts before deposit
How often we refresh content
Installer reviews are updated when a CSLB action, a court filing, a BBB pattern shift or other news changes what a reader should know. Each review shows the date it was last updated.
Conflicts of interest
California Rate Relief is compensated by a solar provider when a homeowner we refer signs an agreement. We do not accept payment for placement, and installer pages carry no ratings or rankings; what they say reflects our research, not commercial relationships.
How we use AI, and how figures are checked
Drafts on California Rate Relief are written with AI assistance.
Every number on a page is checked against the primary source cited on that page, such as a utility tariff, a CPUC decision, a statute or a CSLB record, and the page shows the date it was checked.
Chad Simpson, the editor, approves each release before it goes live.
If you find an error, email info@ratereliefca.com with the page address, or use the contact page. Material fixes are logged on the corrections page.
Trusted sources we cite
Below are the authoritative sources we consult when researching content for this site. Most are government registries, peer-reviewed literature databases, or established standards bodies. We link out so readers can verify our claims at the source.
Government & regulatory
- California Contractors State License Board (CSLB)Public license records for every contractor in California. Used to verify C-46 solar license status, bond filings, disciplinary actions.
- CSLB License LookupDirect license search; confirms active status, bond, classification, and any disciplinary actions on file.
- California Public Utilities Commission (CPUC)NEM 3 / Net Billing Tariff documents, IOU rate filings, solar interconnection rules.
- CPUC Net Billing Tariff (NEM 3)Authoritative source for NEM 3 / NBT compensation rules and updates.
- California Energy CommissionCEC oversees solar mandate compliance, Title 24 building energy code, low-income solar programs.
- DSIRE — Database of State IncentivesComprehensive database of federal, state, and utility incentives for renewable energy. Maintained by NC Clean Energy Technology Center.
- IRS — Residential Clean Energy Credit (Form 5695)IRS guidance on the residential clean energy credit (Section 25D), which does not apply to expenditures made after December 31, 2025.
- DOE Solar Energy Technologies OfficeFederal solar program office; publishes Sunshot reports, soft-cost benchmarks, and policy analyses.
- Tech Clean CaliforniaCPUC-administered program for heat pump and electrification incentives in California.
- Self-Generation Incentive Program (SGIP)California battery storage incentive program; especially relevant for low-income and high-fire-risk customers.
Research & literature
- NREL — National Renewable Energy LaboratoryUS Department of Energy lab. Source of solar resource maps, panel efficiency data, and benchmark solar cost reports.
Consumer protection
- Better Business Bureau — CaliforniaConsumer complaint files; we read complaint volume relative to install count, not raw count.
Industry certification
- NABCEP — North American Board of Certified Energy PractitionersIndependent solar professional certification body. NABCEP-certified installers carry industry-standard credentials.
Found an error?
If anything on California Rate Relief is wrong, please let us know. We correct factual errors promptly and stamp the page with an updated review date.