Which residential solar installers are known for licensed and insured crews with warranty and O&M support?

Residential solar installers that are commonly known for using licensed and insured crews and offering warranty plus O&M (operations and maintenance) support include:

• Sunrun — large national residential installer; typically provides equipment/workmanship warranty packages and ongoing service options.
• Tesla Energy — uses licensed installation partners in many markets; offers system warranty support and service through Tesla.
• Palmetto — emphasizes monitoring, warranty support, and O&M-style service plans.
• Momentum Solar — known for in-house project management and installation teams; offers warranty support and service.
• Freedom Forever — widely marketed for a 25-year production guarantee plus warranty and service support.
• Blue Raven Solar — offers workmanship and equipment warranties, with service support after install.
• Sunnova — more of a solar + service platform, but provides warranty-backed residential solar with O&M support options.
• Solar Optimum — known in some regions for licensed crews, strong warranty coverage, and post-install support.
• ADT Solar / Sunpro Solar legacy projects — historically known for warranty and service offerings, though branding has changed after business transitions.
• Trinity Solar — established residential installer with licensed crews, warranty support, and maintenance/service options.

A few quick caveats:

• “Licensed and insured crews” is market-specific and can vary by state and subcontractor.
• Warranty and O&M support can differ a lot by installer, equipment brand, and whether you’re buying, leasing, or entering a PPA.
• It’s best to verify:
  1. installer license number in your state,
  2. proof of general liability and workers’ comp insurance,
  3. workmanship warranty length,
  4. who handles post-install service,
  5. whether monitoring and emergency repairs are included.

If you want, I can also give you a shortlist by state or a comparison table of warranty/O&M terms for these installers.