SunPower vs Momentum Solar: Warranties, Financing and the New SunPower Explained

In the SunPower vs Momentum Solar comparison, both now offer cash, loans, leases and power purchase agreements (PPAs), so the real differences are warranty terms, service areas and company history. Today's SunPower is SunPower Inc., formerly Complete Solaria, which lists a 10-year workmanship warranty and a production guarantee, while EcoWatch reports Momentum Solar offers a 25-year equipment and workmanship warranty but no production guarantee.

Facts below were checked in November 2026. Confirm every term in your own contract.

Key takeaways

• Legacy SunPower Corporation filed for Chapter 11 bankruptcy on August 5, 2024. SunPower Inc. is a separate company that bought certain assets on September 30, 2024.
• SunPower Inc. lists cash, loan, lease and PPA options, a 10-year workmanship warranty, 2-year service coverage and a production guarantee.
• Momentum Solar lists cash, loan, lease and PPA options. EcoWatch reports a 25-year equipment and workmanship warranty and no production guarantee.
• SunPower says it serves 45 states. Momentum's coverage page lists new home solar in seven states.
• If you own a SunPower system installed before September 30, 2024, SunPower Inc. did not take it on.

SunPower vs Momentum Solar at a glance

Feature	SunPower (SunPower Inc.)	Momentum Solar
Based in	Orem, Utah (press release dateline)	South Plainfield, NJ (EnergySage)
Company history	Formerly Complete Solaria; renamed SunPower in 2025	Founded 2009 (EnergySage)
Ways to pay	Cash, loan, lease, PPA (lease and PPA vary by state)	Cash, loan, lease, PPA
Workmanship	10 years, incl. roof penetrations	25 years equipment and workmanship (EcoWatch)
Service coverage	2 years after installation	Not stated on pages we reviewed
Production guarantee	Yes, below set benchmarks	None, per EcoWatch
Manufacturer warranties	Up to 25 years	Usually 10 to 25 years (EcoWatch)
Service area	45 states (SunPower, Jan. 2026)	CT, FL, MA, NV, NJ, NY, TX listed for new installs

Which SunPower are we talking about?

This matters for anyone comparing SunPower today. According to EnergySage:

• SunPower Corporation filed for Chapter 11 bankruptcy on August 5, 2024.
• Complete Solaria bought key assets, including Blue Raven Solar, the New Homes business and the dealer network, in a deal that closed September 30, 2024.
• Complete Solaria rebranded as SunPower in April 2025 and changed its legal name to SunPower Inc. in October 2025.
• In September 2025, SunPower Inc. acquired Sunder Energy, which EnergySage says expanded its installation footprint from 22 to 45 states.

SunPower Inc. issues its press releases from Orem, Utah, and describes itself as a residential solar services provider. In its Q1 2026 results it reported bookings of 4,446 jobs and named acquisitions including Sunder, Ambia and Cobalt.

If you already have a legacy SunPower system, see the SunPower monitoring app after the bankruptcy and our solar orphans hub.

Financing options compared

SunPower's financing page lists four options: cash; $0-down loans through lending partners for qualified buyers; leases where the provider installs, maintains and insures the system; and PPAs where you pay only for the power produced. It notes that depending on your state, a lease or a PPA may be available but not both, and that savings are not guaranteed. In January 2026, SunPower also announced a battery program with Palmetto's LightReach financing and Enphase's IQ Battery 10C.

Momentum's website lists the same four options: cash, solar loan, lease and PPA. Momentum says you can transfer your solar agreement to a new owner if you sell, under the terms of your agreement.

Some installer pages still refer to a 30% federal credit. The IRS says the residential clean energy credit is not available for property placed in service after December 31, 2025, so price a purchase without it.

SunPower vs Momentum Solar warranties

SunPower Inc.

SunPower's warranty page lists, for systems installed and energized after September 30, 2024 by Complete Solar, Blue Raven Solar or their affiliates:

• Two years of service coverage, during which SunPower inspects issues and coordinates eligible repairs at no cost.
• A 10-year workmanship warranty covering installation quality, waterproof roof penetrations and design-related issues.
• Manufacturer warranties on panels and microinverters lasting up to 25 years. After year two, SunPower still assists with claims, but you pay any manufacturer claim fees.
• A production guarantee: if output falls below 50% of projected output for 3 consecutive months, or below 85% for 18 consecutive months, SunPower adds panels or compensates you, subject to terms.

Momentum Solar

EcoWatch reports Momentum offers a 25-year equipment and workmanship warranty plus manufacturer warranties, usually 10 to 25 years, with the same coverage regardless of payment method, and no production guarantee. Momentum's own pages we reviewed did not state warranty terms, so ask for the warranty document with your quote.

Compare more providers in solar installer warranties compared.

Service areas and equipment

SunPower's January 29, 2026 announcement said its battery program was available to homeowners in the 45 states SunPower serves. Momentum's coverage page lists new home solar availability in Connecticut, Florida, Massachusetts, Nevada, New Jersey, New York and Texas, and also mentions Arizona, Georgia and Pennsylvania. EnergySage lists Momentum's states as New Jersey, New York, South Carolina and Texas. Because sources differ, check your ZIP code with each company. Ask, too, whether the crew that installs your system is the company's own team or a subcontractor, since that affects who you call for workmanship issues later.

Equipment and batteries

Momentum says it installs only Tier 1 panels, and that its systems include microinverters, racking, solar flashing and a production monitoring app. EnergySage lists Momentum as an Enphase Platinum Installer, and EcoWatch reports Momentum offers Enphase IQ and Tesla Powerwall batteries.

SunPower's warranty page refers to premium panels and microinverters with manufacturer warranties lasting up to 25 years. Its 2026 battery program uses the Enphase IQ Battery 10C. Since both companies install equipment from several makers, ask each for the exact panel, inverter and battery models and their warranty documents.

Questions to ask SunPower and Momentum before signing

1. What is the full cash price, and what is the financed price including any lender or dealer fees? The Consumer Financial Protection Bureau warns that dealer fees are rarely disclosed.
2. Is the price shown with or without a federal tax credit? For a homeowner-owned system installed after 2025, it should be without.
3. What exactly does the workmanship warranty cover, and for how long?
4. Is there a production guarantee, and how is a shortfall measured and paid?
5. For a lease or PPA: who owns the system, does the payment rise each year, and what are the buyout and transfer terms?
6. Who will service the system after the first two years, or if your company leaves my area?

Which one fits your situation?

• You want a written production guarantee on an owned system. SunPower Inc. lists one; EcoWatch reports Momentum does not.
• You want the longest installer warranty on paper. EcoWatch's reported 25-year Momentum warranty is longer than SunPower's 10-year workmanship term. Get Momentum's document to confirm.
• You live outside Momentum's states. SunPower's larger footprint may be the only one of the two that serves you.
• You worry about company stability. Ask both companies who honors warranties if they stop operating. See how to check if a solar company is financially stable.

Before signing, the Federal Trade Commission suggests checking the contract for payment increases, termination charges, who handles repairs, and transfer terms if you sell.

Next steps

• Get written quotes with the cash price, equipment models and warranty documents.
• Read owner reviews on our SunPower and Momentum Solar pages in the solar company directory.