SunPower Vs. Sunrun: Which should you choose?  - Climatebiz (2023)

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Robert Wortrich

Climatebiz Editor

Jul 6, 2022


SunPower Vs. Sunrun: Which should you choose? - Climatebiz (2)

SunPower vs. Sunrun —two giants at the forefront of the U.S. solar industry.

Both are known for their quality solar panels, battery systems, and other solar-related offerings.

But who are? Which company has the superior products? And above all, which of these solar providers are right for you?

This article will help familiarize you with each of the above companies by answering these questions and more!


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Table of Contents

SunPower Vs. Sunrun

Solar Panel ManufacturingMaxeon Solar TechnologiesThird-Party Suppliers
Rating / Efficiency415W @ 22.3%N/A
Output Warranty25 yearsN/A
Output Guarantee92% of Rated PowerN/A
Solar Product Warranty25 yearsN/A
Warranty of Other ComponentsInverter (25 years)
Mount (25 years)
Monitoring System (10 years)
Energy Storage (10 years)

Getting To Know SunPower

SunPower was first established in 1985 by Richard Swanson, an electrical engineering professor from Stanford, and has been headquartered in Silicon Valley ever since.

The company provides green-tech energy solutions to consumers by selling, installing, and financing solar power products such as panels, batteries, monitoring software, and mounting hardware.

A point of pride for this solar giant is the fact that they’re the only U.S-based company that’s been around longer than its 25-year warranty.

SunPower Vs. Sunrun: Which should you choose? - Climatebiz (4)


In August 2020, the SunPower Corporation made the decision to split into two separate public companies:

  • SunPower: responsible for supplying all solar-related services to customers.
  • Maxeon Solar: the company responsible for producing thehigh-efficiency solar panelsthat SunPower is known for
SunPower Vs. Sunrun: Which should you choose? - Climatebiz (5)

Maxeon Solar is based in Singapore, with factories in France, Malaysia, Mexico, and the Philippines. The company strategically chose these locations to help them take advantage of low-cost manufacturing processes throughout Asia.

Now don’t let the idea of “low-cost manufacturing” put you off. While the split and change in locations have brought their manufacturing costs down, the quality remains the same.

Since the split, Maxeon has provided SunPower with quality products such as the Maxeon 6 AC Solar Panel — boasting an efficiency rating of 22.8%.

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In short, the strategic decision to divide the company into two parts has paid off for both them and their consumers.

Are you struggling to size your solar system? Our in-house experts have created a unique solar calculator to help make things easier for you!

Getting To Know Sunrun

Sunrun was first established in 2007 by founders Lynn Jurich, Nat Kreamer, and Ed Fenster.

The company engages in the design, development, installation, sale, ownership, and maintenance of residential solar energy systems throughout the United States.

They offer these solar services both directly to their customers and through their partners, including installation, sales, and strategic partners (retail partners included).

Solar Service Pioneers

A significant difference between Sunrun and other solar companies (SunPower included) is their solar service model. Right from its inception, Sunrun pioneered this model to create a low-cost solution for customers seeking to lower their energy bills.

So, what is this solar service model?

The core service offering comes in the form of Sunrun’s lease and power purchase agreements — the company refers to these agreements as “Customer Agreements.”

SunPower Vs. Sunrun: Which should you choose? - Climatebiz (7)

How It Works

While SunRun allows customers such as yourself to purchase one of their solar systems, 80% – 90% of their business comes from “solar as a service.”

Essentially, a customer will enter into an agreement with Sunrun, which allows the company to lease out and install a solar system on your home — typically over a 20 to 25-year period.

Sunrun provides daily system monitoring, free maintenance,repairs,and comprehensive insurance throughout this period. In exchange, they receive a steady cash flow from a high-quality customer with good credit. Ultimately, this allows the company to qualify for tax (and other) benefits.

If you’re interested in SunRun’s leasing options, click here.

What’s In It For The Homeowner?

By entering into a lease agreement with Sunrun, you can acquire a solar system for little to no money upfront. Instead, you pay a monthly fee. When this fee is less than the local utility’s electricity rates, you save money.

But remember, Sunrun does still sell solar systems. As such, you can choose from several flexible solar financing options or pay outright.

What’s more, you can choose to purchase a leased solar system after the contract period is up.

Which Company Produces Better Quality?

Naturally, when choosing between solar companies, it makes sense to go with the one that provides better quality panels.


In this case, you know what you’re getting with SunPower — top-quality products like the Maxeon 6 AC Solar Panel.

Together, SunPower and Maxeon have developed an incredibly strong following due to the quality of their offerings. What’s more, you know (even before you purchase) where your solar panels are coming from and who’s manufacturing them.


Quality-wise, SunPower stands confidently behind its products, offering 25-year industry-leading warranties that cover its systems comprehensively.

The warranty covers repairs, repairs, labor, and shipping at no extra cost.


Sunrun does not manufacture its own products. Instead, the company uses multiple suppliers for their equipment, though they do have a partnership with LG.

Here’s the issue: you won’t know which panels you’ll be provided with until going through the purchasing process.

With this in mind, it’s difficult for us to provide you with a concrete answer as to the overall quality of their panels.


Sunrun provides a 10-year workmanship warranty against damage to your roof or any installation problems.


In this aspect of the SunPower vs. Sunrun debate, SunPower takes the cake. Their comprehensive, 25-year warranty and the fact that their panels are a known entity make it an absolute no-brainer!

SunPower Vs. Sunrun: Which Company Is Cheaper?

Price Of Residential Solar In The U.S.

The 2021 NREL white paper report puts the median cost of residential solar at $2.75 per watt (2020).

SunPower Vs. Sunrun: Which should you choose? - Climatebiz (8)

However, EcoWatch provides an updated 2022 price of $2.66 per watt.

For argument’s sake, we’ll use the more update-to-date value.


According to the NREL’s white paper report, SunPower’s residential solar panels cost around $4.15 per watt.

Taking this figure into consideration, a 5kW solar panel system in the United States will cost you around:

$4.15 per watt * 5,000 watts = $20,750

SunPower Vs. Sunrun: Which should you choose? - Climatebiz (9)


Sunrun’s solar panels tend to come in at a more expensive $4.91 per watt.

Looking at these figures, a 5kW solar panel system in the United States will cost you around:

$4.91 per watt * 5,000 watts = $24,550

Please Note: the above values do not consider system efficiency. While we’d like to account for efficiency to give you more accurate estimates, it simply isn’t possible due to Sunrun sourcing its products from multiple third-party suppliers.


Both SunPower ($4.15) and Sunrun’s ($4.91) costs per watt are well over the $2.66 average.

But again, it’s clear that the second round of the SunPower vs. Sunrun duel goes to SunPower, with the former having a slightly cheaper cost per watt average.

Which Company is Right For You?

This part of the SunPower vs. Sunrun debate comes down to your needs.

If you’re looking to purchase a solar system outright, we highly recommend SunPower. There’s a reason they’ve become a juggernaut in the solar industry — their service and products are well renowned and of high quality.

However, if you don’t want to commit to purchasing a system and would instead prefer to lease one, then Sunrun is a solid bet.

Yes, we know that SunPower leases out their systems too, but Sunrun has been at the forefront of solar leasing agreements for a long time. After all, they did pioneer the model.


Reviews exist for a reason. Sure, inherent bias does exist, but it’d be silly to ignore the value of reviews entirely.

Here are some links to each company’s reviews on Consumer Affairs and Best Company with the above in mind.



Related Reading: Average Peak Sun Hours (United States)

Final Thoughts

There you have it, the SunPower vs. Sunrun debate!

By now, we’re confident that you have a much better idea of each company and what they entail. But remember, additional research can only benefit you. So before you commit to anything, be sure to investigate as much as possible.

In closing, we hope you’ve found this resource to be of use. Should you have any further questions or insights into this (or any other topic), we encourage you to join our budding community!


Which one is better sunrun or SunPower? ›

SunPower has overall higher quality solar panels than Sunrun. Thanks to its superior output ratings, efficiency ratings, and warranties, SunPower solar panels dramatically outperform Sunrun panels. The SunPower M Series solar panels are the best solar panels on the market today.

Who is the most reputable solar panel company? ›

The following companies are the best in the industry based on our in-depth research:
  • SunPower: Most Energy-efficientSunPower: Most Energy-efficient.
  • SunPower: Most Energy-efficientSunPowerSunPower: Most Energy-efficient.
  • ADT Solar: Best Protection.
  • Momentum Solar: Most User-friendly.
  • Blue Raven Solar: Best Benefits.
23 Sept 2022

What is the number 1 solar company in the US? ›

NextEra Energy

Does sunrun use SunPower panels? ›

The company produces high-quality solar systems that are meant to last while Sunrun relies on third-party manufacturers for solar panels. In essence, SunPower are manufacturers and installers at the same time, while Sunrun are more or less solar installers.

Is there a lawsuit against Sunrun? ›

Sunrun, a residential solar energy company, was slapped with a lawsuit Friday in Texas Southern District Court over alleged violation of the Telephone Consumer Protection Act.

Is Sunrun solar a good deal? ›

Sunrun is a good and practical choice for customers looking to quickly and simply save money on their energy bills through a solar lease. However, for homeowners looking for attentive customer service both before and after installation, we advise you to shop around.

What are the best solar panels on the market 2022? ›

Best solar panels for homes of 2022
  • Silfab: Our overall pick.
  • SunPower: Our pick for efficiency.
  • Panasonic: Our pick for premium panels.
  • LG: Our pick for accessibility.
  • Q Cells: Our pick for warranty options.
  • Canadian Solar: Our pick for affordability.
  • Trina Solar: Our pick for value panels.
12 Sept 2022

How do I choose a good solar company? ›

The best way to check a solar company's reputation is based on speaking with previous customers or seeing their historical work. Places like Yelp, BBB, Google, Solar Reviews, and Energysage are all places that can provide a glimpse into the reputation and credibility of your solar installer.

Which solar panel is best? ›

In terms of efficiency, LG solar panels are almost unbeatable. (They are rated as 21.7% efficient; the only brand we've found that can surpass that is SunPower.) A competitive price point and robust 25-year warranty just sweeten the deal and make LG the most recommendable of home solar panels.

What company is the leader in solar energy? ›

The largest solar company in the U.S. is NextEra Energy, with a revenue of $17.069 billion and an market share of 2.37%. As of 2022, the U.S. solar industry has a market size of $12 billion. U.S. jobs like Solar Technician will grow by 63% through 2028.

Is SunPower a good solar company? ›

SunPower is considered a high-end solar company because it offers the most efficient solar panels on the market. Those panels come with an increased price and SunPower runs more expensive than competitors. However, those competitors often can't match the lifespan and performance of SunPower.

Who is the leader in solar energy? ›

Top 10 countries by cumulative solar PV capacity in 2021
Country or territoryNewTotal
European Union152,917
United States14,73075,572
20 more rows

Is SunPower a good solar company? ›

SunPower is considered a high-end solar company because it offers the most efficient solar panels on the market. Those panels come with an increased price and SunPower runs more expensive than competitors. However, those competitors often can't match the lifespan and performance of SunPower.

Is SunPower solar going out of business? ›

SunPower will continue to be a distributed generation energy services company while their new company, Maxeon Solar Technologies (Maxeon Solar), will focus on the manufacturing of solar panels. Why the sudden split?

How long do Sunrun solar panels last? ›

Studies show that solar panels can last anywhere from 20 to 30 years, or sometimes longer. Still, this doesn't mean the panels on your roof will stop producing electricity after a couple of decades.

Is Sunrun a Chinese company? ›

Sunrun is an American provider of photovoltaic solar energy generation systems and battery energy storage products, primarily for residential customers. The company was established in 2007 and is headquartered in San Francisco, California.

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