ray of sunshine

DOE loans Houston company $3B for project that will provide solar energy to underserved communities

Houston-based Sunnova Energy has secured a loan from the Department of Energy. Photo via sunnova.com

A partial loan guarantee from the U.S. Department of Energy will support more than $5 billion in loans for Sunnova Energy equipment and technology that’ll supply solar energy to underserved communities.

The $3 billion partial loan guarantee equates to a 90 percent guarantee of up to $3.3 billion in loans. In turn, Sunnova says, that’ll support more than $5 billion in loans to about 75,000 to 115,000 U.S. households. It’s said to be the largest single commitment to solar power ever made by the federal government.

At least 20 percent of the Project Hestia loans will be extended to customers with FICO credit scores of 680 or less, and up to 20 percent of the loans will be earmarked for homeowners in impoverished Puerto Rico.

The Department of Energy (DOE) says Sunnova’s Project Hestia — a virtual power plant — will provide rooftop solar, battery storage, and energy software to residential customers and create more than 3,400 jobs. Sunnova, an energy-as-a-service provider, says each residential power system will feature energy technology accessible by smartphones and other electronic devices.

“The software will give customers insight into their household’s energy usage and greenhouse gas emissions, allowing customers to reduce electricity use — or even contribute electricity to the system in markets that allow such contributions — when the grid is under stress,” says DOE.

The estimated 568-megawatt Project Hestia is poised to help avoid the emission of more than 7.1 metric tons of carbon dioxide over the next 25 years, DOE says. The project will produce enough energy to power roughly 425,000 homes per year.

John Berger, CEO of Sunnova, says the federal loan guarantee “marks the beginning of an exciting chapter in our pursuit of a cleaner and more equitable energy landscape. With our collaboration with the U.S. Department of Energy, we are embarking on a journey that expands clean energy access and delivers economic benefit to Americans in disadvantaged communities.”

As of June 30, Sunnova had 348,600 customers in the U.S., up from 279,400 at the end of 2022. The company projects a 40 percent rate of customer growth in 2024 compared with 2023.

The publicly traded company posted revenue of $328.1 million in the first half of 2023, up from $212.7 million during the same period last year.

Last month, in an interview with EnergyCapital, Berger explained misconceptions about solar power, predicted the rise of the home as a power station, and highlighted the importance of energy independence.

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A View From HETI

Fervo Energy climbed 10 spots on Time's list of the World's Top GreenTech Companies of 2026. Photo via Fervo Energy

Six Houston-area businesses appear on Time magazine’s 2026 list of the world’s top greentech companies, with a high-flying name leading the pack.

The highest-ranked local company is Houston-based geothermal power producer Fervo Energy, which claims the No. 4 spot—up from No. 14 last year.

In May, Fervo raised nearly $1.9 billion in its IPO, making it the biggest-ever IPO in the clean energy sector. The company’s valuation now exceeds $10 billion.

Founded in 2017, Fervo borrows methods from the oil and gas sector to drill wells that go down vertically into hot rock before turning horizontal, letting water circulate through them and produce electricity from the heat it absorbs. Cape Station in Utah, the company's first utility-scale project, is set to start delivering power to the grid later this year, with capacity expected to grow to 100 megawatts by 2027.

Co-founder and CEO Tim Latimer tells Fast Company, which named him a 2026 Visionary of the Year, that he launched his career as a drilling engineer for fossil fuels, “but quickly became obsessed with this idea that the drilling techniques we were using would actually be transformative for the world of geothermal as well.”

Fast Company notes the geothermal power generated by Cape Station will be available 24/7, unlike wind and solar power.

“When you start adding something to the grid mix that’s affordable and works around the clock,” Latimer says, “that’s going to be a huge asset to meeting our country’s energy needs.”

Time teamed up with data provider Statista to compile the second annual ranking of the 250 top greentech companies in the world. Companies on the list either develop or provide green technology, products, or services that help ease or reverse the environmental impacts of human activity.

Statista gathered and analyzed data from more than 8,300 companies to create the list, and they were scored in three categories: positive environmental impact, innovation, and financial strength. Fervo earned a score of 94.63 out of 100.

Joining Fervo on this year’s list are:

  • Houston-based Quaise Energy (No. 78), which specializes in terawatt-scale geothermal power
  • The Woodlands-based Plus Power (No. 112), which develops, owns and operates battery storage projects
  • Houston-based Utility Global (No. 167), which develops decarbonization technology
  • Houston-based 1PointFive (No. 217), an Occidental Petroleum subsidiary that offers large-scale carbon removal and storage.
  • Houston-based Sage Geosystems (No. 250), which produces commercial-scale geothermal power

Earlier this year, six Houston-area companies landed on Time's list of top greentech companies in America: Fervo (No. 1), Quaise Energy (No. 49), Plus Power (No. 71), Utility Global (No. 98), Solugen (No. 199) and Noodoe (No. 215).

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