growth ahead

Texas developer closes $225M to supercharge US energy storage expansion

Jupiter Power's Houston facility went online earlier this year. Photo courtesy of jupiterpower.io

Austin-based developer and operator of utility-scale battery energy storage systems Jupiter Power has announced the successful closing of a $225 million corporate credit facility.

The transaction strengthens Jupiter Power’s U.S. portfolio, which includes one of the nation’s largest energy storage development pipelines, totaling over 12,000 megawatts. Jupiter Power, which also has offices in Houston, began commercial operations with the launch of its 400-megawatt-hour battery facility, Callisto I, in central Houston in August of 2024.

"Securing this corporate credit facility highlights the market's recognition of Jupiter Power as a leader in advancing large-scale energy storage solutions, as evidenced by our 2,575 megawatt hours of battery energy storage systems already in operation or construction," Jupiter Power CFO Jesse Campbell says in a news release. “This funding enhances our ability to advance projects across our pipeline in markets where energy storage is needed most. We greatly appreciate the support of our banking partners in this transaction.”

The $225 million in total revolving credit facilities will include up to $175 million in letters of credit and $50 million in revolving loans. Leading on the lender side includes Barclays Bank PLC, HSBC Bank USA, and Sumitomo Mitsui Banking Corp.

“HSBC is proud to support Jupiter Power with their credit facility as they continue to expand and accelerate the development of their energy storage projects across the United States,” Paul Snow, head of renewables - Americas at HSBC adds. “HSBC’s inaugural facility with Jupiter Power not only reinforces our commitment to financing premiere clean energy projects, but complements our ambition to deliver a net zero global economy.”

The Houston project is the first in the area, and Jupiter Power's ninth to deliver energy storage to ERCOT, which brings its total ERCOT fleet to 1,375-megawatt-hour capacity.

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A View From HETI

Solar represented 14 percent of energy supplied to the ERCOT electric grid in 2025. Photo via bp.com

Solar barely eclipsed coal to become the third biggest source of energy generated for the Electric Reliability Council of Texas (ERCOT) in 2025, according to new data.

In 2024, solar represented 10 percent of energy supplied to the ERCOT electric grid. Last year, that number climbed to 14 percent. During the same period, coal’s share remained at 13 percent.

From the largest to smallest share, here’s the breakdown of other ERCOT energy sources in 2025 compared with 2024:

  • Combined-cycle gas: 33 percent, down from 35 percent in 2024
  • Wind: 23 percent, down from 24 percent in 2024
  • Natural gas: 8 percent, down from 9 percent in 2024
  • Nuclear: 8 percent, unchanged from 2024
  • Other sources: 1 percent, unchanged from 2024

Combined, solar and wind accounted for 37 percent of ERCOT energy sources.

Looking ahead, solar promises to reign as the star of the ERCOT show:

  • An ERCOT report released in December 2024 said solar is on track to continue outpacing other energy sources in terms of growth of installed generating capacity, followed by battery energy storage.
  • In December, ERCOT reported that more than 11,100 megawatts of new generating capacity had been added to its grid since the previous winter. One megawatt of electricity serves about 250 homes in peak-demand periods. Battery energy storage made up 47 percent of the new capacity, with solar in second place at 40 percent.

The mix of ERCOT’s energy is critical to Texas’ growing need for electricity, as ERCOT manages about 90 percent of the electric load for the state, including the Houston metro area. Data centers, AI and population growth are driving heightened demand for electricity.

In the first nine months of 2025, Texas added a nation-leading 7.4 gigawatts of solar capacity, according to a report from data and analytics firm Wood Mackenzie and the Solar Energy Industries Association.

“Remarkable growth in Texas, Indiana, Utah and other states ... shows just how decisively the market is moving toward solar,” says Abigail Ross Hopper, president and CEO of the solar association.

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