Sunrun vs Tesla Solar: Which Fits a California Home?

Sunrun and Tesla are separate companies that work together: Sunrun installs Tesla Powerwall, and the two coordinated a statewide battery dispatch in September 2026. What separates them is how you pay and who owns the system. Most Sunrun customers subscribe and Sunrun owns the equipment. Tesla sells its own panels, inverter and Powerwall for cash or under a 25-year lease. Neither publishes a California price.

This comparison uses each company’s own pages, filings and press releases, checked on the dates in the sources list. It covers ownership and lease terms, what each one guarantees, batteries, roofs, how the partnership works and whether Sunrun is financially stable. It does not rank either company.

Sunrun vs Tesla at a glance

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Is Sunrun owned by Tesla?

No. They are two companies with three public arrangements. In California, Sunrun installs Powerwall and the two coordinate their battery fleets: on September 9, 2026 they dispatched more than 580 MW from over 140,000 home batteries, including 110,000 Powerwalls, more than half of them operated by Sunrun, under the state’s Demand Side Grid Support and Emergency Load Reduction programs. investors.sunrun.com·checked Sep 23, 2026 In Texas, Tesla sells an electricity plan, Tesla Electric + Sunrun Flex, to Sunrun Flex customers who have at least one Powerwall; both companies say it is offered only in Texas. investors.sunrun.com·checked Sep 23, 2026 tesla.com·checked Sep 23, 2026 And in June 2026 they announced, with Renew Home, a plan to pool home batteries and other devices into more than 16 GW of flexible capacity, starting in Virginia. investors.sunrun.com·checked Sep 23, 2026

Sunrun vs Tesla cost

Neither company prints a California price. Tesla’s design tool asks for your address and your average electric bill before it recommends and prices a system. tesla.com·checked Sep 23, 2026 Sunrun’s Powerwall page advertises “as little as $0 down” but no total or monthly figure. sunrun.com·checked Sep 23, 2026 So the comparison has to be built from two written quotes for the same address.

Utility records give a check on either quote. For customer-owned systems without a battery, 1 to 25 kW, approved at PG&E, SCE and SDG&E from January 2025 through May 2026, Sunrun (CSLB #750184) reported a median of $2.85 per watt on 4,929 systems and Tesla (CSLB #888104) $4.48 on 1,159 systems (California Distributed Generation Statistics, CPUC interconnection data through May 31, 2026, downloaded September 24, 2026). These are prices the installers wrote on utility applications, before incentives, not quotes for your roof.

The two sell differently. In 2025, Sunrun is listed on 37,367 residential systems at the three utilities, 88% of them leases or PPAs; Tesla on 7,056, under 1% leases or PPAs, and 86% with a battery.

If both are purchases, compare the price per watt for the same system size and what each includes. If one is a Sunrun subscription and the other a Tesla lease, compare the year-one payment, the escalator and the payment in year 25: at Tesla’s 3% escalator the last payment is about double the first (1.03 to the 24th power is about 2.03). Ask Sunrun for its escalator in writing. Our cash, loan, lease and PPA comparison and the guide to Sunrun’s lease and PPA show what to line up.

Sunrun battery vs Tesla Powerwall

The battery does not separate them, because Sunrun installs Powerwall. Sunrun calls itself a Tesla certified premium installer, offers Powerwall under monthly or full-amount leases, and points Powerwall customers to the Tesla app for monitoring. Its page says adding a Powerwall to an existing system is currently offered only in California. sunrun.com·checked Sep 23, 2026 The difference is ownership: buy a Powerwall from Tesla and it is yours, with Tesla’s 10-year warranty; energylibrary.tesla.com·checked Sep 23, 2026 lease it from Sunrun and Sunrun owns it and services it under its guarantee. For what one costs and which rebates still apply, see the Powerwall 3 price and rebate page.

Is Sunrun going bankrupt?

Its most recent filing does not point that way. Sunrun’s second-quarter 2026 release, dated August 5, 2026, reports $1.1 billion in total cash, $3.7 billion of Contracted Net Earning Assets, subscribers up 10% on a year earlier and a 74% storage attachment rate, and contains no going-concern or bankruptcy statement. investors.sunrun.com·checked Sep 23, 2026 Subscriber additions in the quarter were 31% lower than a year earlier, which is worth watching. Several other California solar companies have filed for bankruptcy since 2024; the Sunrun review and the bankruptcy record cover them.

Will Sunrun replace my roof?

Not with its own crews. Sunrun offers roof work through a partnership with Remi Roofing, which bundles removing the system, the roof work and reinstalling it, with a 5-year workmanship warranty on every Remi job. Sunrun says its 25-year solar warranty requires a healthy roof, and that Remi’s financing is not available in New York or Nevada. sunrun.com·checked Sep 23, 2026 If your roof is near the end of its life, price the roof and the solar together, whichever company you choose.

Who each tends to fit

• If you want no upfront cost and someone else responsible for repairs, both offer that: Sunrun through its subscription and guarantee, Tesla through its lease. Compare the escalators and the guarantees line by line.
• If you want to own the system, Tesla sells its own panels, inverter and Powerwall for cash, and you keep them when you sell the house.
• If you already have solar and want to add a battery, Sunrun says it offers Powerwall add-ons in California; ask Tesla the same for your address.
• If your roof needs work, Sunrun has a published roofing arrangement; for Tesla, ask in writing who handles the roof and leaks.

For the complaint files and court records behind each company, read the full Sunrun review and the full Tesla Solar review. For a list of companies that install Powerwall, see Tesla Powerwall installers in California.