fresh funding

Texas battery startup Base Power hits $13B valuation with $1B raise

Base Power, founded by Justin Lopas and Zach Dell, has closed a $1 billion round. Photo courtesy Base Power

Base Power, an Austin-based residential power provider with a Houston office, has raised $1 billion in a Series D round, bringing the startup’s valuation to $13 billion.

Ribbit, Addition, Valor Equity Partners, and JPMorganChase’s Strategic Investment Group led the round, with participation from Altimeter, D1 Capital Partners, Sands Capital, Coatue, Layer Global, and Energy Impact Partners. Existing investors also added to the round, including Thrive Capital, a16z, Lightspeed, Trust Ventures, and CapitalG.

Base Power, which provides residential battery backup systems that automatically turn on during outages and sells electricity to homeowners, says the funding will go toward hiring more people and expanding nationally.

Since being founded in 2023, Base Power has raised more than $2.5 billion. Base Power’s factory in Austin is already manufacturing thousands of the batteries each month.

In conjunction with the funding announcement, the startup launched Base Core, a home battery designed to support the power grid. Today, Base Core is available to homeowners in certain parts of Texas and Illinois, including the Houston area.

Zach Dell, co-founder and CEO of Base Power, said in a news release that Base Core “installs in under an hour, switches over seamlessly, is built to handle extreme weather, and delivers extended outage protection at a price Americans can afford.”

Dell is the son of Austin tech billionaire Michael Dell, founder, chairman, and CEO of Round Rock-based Dell Technologies.

In only three years, Base Power has grown its battery fleet to a capacity of more than 500 megawatt-hours, expanded beyond Texas into Illinois, and forged partnerships with utilities such as Austin Energy, El Paso Electric, and CoServ.

Antonio Gracias, founder, CEO, and chief investment officer at Valor Equity Partners, says Base Power is executing on an “ambitious plan” to become America’s power company. The startup “has emerged as one of the fastest and most cost-effective ways to add capacity to the grid,” he says.

Base Power opened its offices in Katy, Texas, in October 2025 and expanded its service to the city of Houston around the same time. Read more here.

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A View From HETI

Texas improved by one spot on WalletHub's Most & Least Energy-Efficient States report for 2026. Photo courtesy of ERCOT

Despite being home to a booming energy sector, Texas ranks below average on a new list of the country’s most and least energy-efficient states.

The list, compiled by personal finance website WalletHub, puts Texas at No. 34 for energy efficiency. It ranked 27th for energy efficiency of homes and 41st for energy efficiency of cars. Texas improved by one spot on the 2026 report, after coming in at No. 35 last year and No. 36 in 2024.

California took the top spot on the list this year, beating out Vermont, which claimed the No. 1 rank in 2025. South Carolina ranked No. 48. Due to data limitations, Alaska and Hawaii were excluded from WalletHub’s analysis.

In the WalletHub study, California had the lowest residential energy consumption per capita and the third-highest efficiency for home energy. At the bottom of the list, South Carolina ranked 48th for energy efficiency of homes and 35th for energy efficiency of cars.

Here’s who joined California in the top 5:

  • No. 2 Vermont
  • No. 3 New York
  • No. 4 Washington
  • No. 5 Massachusetts

WalletHub notes the average U.S. family spends at least $2,000 per year on utilities, and the average consumer spent $2,411 on gasoline in 2024.

The U.S. Department of Energy estimates that adopting energy-efficient measures in the home could reduce a family’s utility costs by as much as 25 percent. As for gas, the agency found a more fuel-efficient vehicle could save the average driver more than $1,000 per year.

“Energy efficiency doesn’t just help save the planet — it also helps save you money by lowering the amount of electricity, gas, oil, or other types of energy you need to consume,” WalletHub analyst Chip Lupo says.

“While there are some steps you can take to become more energy-efficient on your own, living in the right area can give you a big boost,” he adds. “For example, certain states have much better public transportation systems that minimize your need to drive, at least in big cities. Some places also have better-constructed buildings that retain heat better during the winter or stay cooler during the summer.”

WalletHub compiled the listing using data from the U.S. Census Bureau, National Climatic Data Center, U.S. Energy Information Administration, and Federal Highway Administration.

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