SunPower / Complete Solaria vs ADT Solar
An independent editorial comparison of cost, warranty, financing, and which installer fits different homeowner situations.
All ratings are editorial estimates by the SolarRatings.org research team based on publicly available data. Not paid placements.
Editorial Verdict: Which is Better for You?
SunPower leads on panel efficiency and warranty comprehensiveness; ADT Solar leads on microinverter quality as a standard inclusion. Both sit at the premium tier -- SunPower justifies its price premium with Maxeon cells and slightly superior warranty depth.
Choose SunPower / Complete Solaria if...
Homeowners who want the absolute highest panel efficiency (Maxeon cells), the longest-term output guarantee, and an industry-best 25-year comprehensive warranty on a space-constrained roof.
Choose ADT Solar if...
Homeowners who want premium warranty terms at a lower premium price, value Enphase microinverters as standard, or have an ADT home security relationship that yields bundle pricing.
Ready to see which fits your home?
Get a personalized solar estimate based on your roof, usage, and location — then compare real quotes from SunPower / Complete Solaria, ADT Solar, and others side by side.
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Get My Free Solar EstimateAbout SunPower / Complete Solaria
SunPower built its reputation on the Maxeon solar cell — a back-contact monocrystalline cell architecture that delivers the highest panel efficiency in residential production, reducing panels needed for a given output and improving performance in shaded or space-constrained roof situations. The Maxeon 6 panel series reaches commercial efficiencies above 22%, a meaningful margin over most tier-1 competitors at 20-21%.
The company underwent significant restructuring in 2023, separating manufacturing (Maxeon Solar Technologies) from US residential installation (Complete Solaria). For homeowners, verify that your local installer is an authorized Complete Solaria dealer and review their independent credentials before signing.
About ADT Solar
ADT Solar (formerly Sunpro Solar, rebranded after ADT's acquisition) leverages the ADT brand's consumer trust and financial backing to compete in the premium segment of the residential solar market. The company's strongest selling point is its warranty stack: the combination of a 25-year roof guarantee, Enphase's best-in-class product warranty, and a 10-year workmanship guarantee represents one of the more comprehensive coverage packages available from a national installer.
Enphase microinverters are standard on ADT Solar installations, which is a genuine quality advantage — microinverters enable panel-level monitoring, reduce shading losses, and tend to have lower failure rates than string inverters over long time horizons. The trade-off is pricing: ADT Solar sits at the premium end of the national market.