Picture a power bank for the whole state, plugged in south of Houston. Texas battery storage just got a big upgrade there: Nightpeak Energy says its Bocanova 2 project is now running, which doubles the site to 300 megawatts, according to a press release on PR Newswire.
Here is the quick version. Bocanova 2 is a 150 MW battery in Brazoria County that began commercial operation on Sept. 17. Nightpeak announced it, along with the financial close, on Oct. 13.
What This Texas Battery Storage Project Actually Is
The company says Bocanova 2 can deliver 150 MW for two hours. With both phases running, that works out to roughly 600 megawatt-hours. That figure is our math from the two-hour duration, not a number the company published.
The first phase, Bocanova 1, also 150 MW, came online in August 2025. A release from last year put that site about 24 miles south of downtown Houston. Phase two uses Tesla Megapack 2 XL systems and sits under a long-term agreement with a buyer Nightpeak describes only as investment-grade.
So who is the buyer? Nobody is saying. The company has not disclosed the contract length or the price.
Who Paid for the ERCOT Battery
MUFG Bank provided a tax equity bridge loan and a construction-to-term loan, the company says. U.S. Bank supplied traditional tax equity. The company gave no dollar amount, so we can’t tell you what this ERCOT battery cost. (The receipt stayed in the glovebox.)
Nightpeak is a young company. Founders started it in 2022, and Energy Spectrum Partners VIII, a Dallas private equity fund, backs it. It says it now has more than 1 GW of operating and de-risked capacity across gas plants, batteries and powered land. That is a lot of ground for a four-year-old firm.
Here’s the Thing for Texas Readers
Why does a battery in Brazoria County matter to you? Because Texas keeps adding demand faster than it adds wires and plants. Nightpeak’s CEO, Paris Hays, says “Texas is at the forefront of that growth.”
Batteries do one trick well. They soak up power when it is plentiful and send it back when the grid is stretched. That helps keep the lights on at the moments that matter, and it can take pressure off prices. Texas power storage like this is also part of a bigger scramble, as AI’s hunger for electricity drives companies to chase every available megawatt.
The release ties this growth to data centers and other big users. Nightpeak names no specific customer, however, so take that as the company’s framing rather than a confirmed link. For context, Big Tech has agreed to cover electricity costs for AI data centers, which shows how seriously the industry takes the strain.
The Fine Print on the Battery Storage Project’s Headline Number
One bit of housekeeping, because the math can mislead. Bocanova 2 on its own is 150 MW. The 300 MW figure is the whole site, both phases together. Calling this a 300 MW project is the company’s wording, and it is fair only if you mean the site.
Also worth knowing: this is so far a single-source story. We found no independent coverage of Bocanova 2 yet, and no grid-operator confirmation of the Sept. 17 start date.
Public ERCOT queue data does list a 150 MW project called Bocanova Power II in Brazoria County, with a target finish of Aug. 31, 2026. That puts the actual start about two and a half weeks behind that target, which is hardly a crisis in the world of big energy builds.
What to Watch Next for Texas Battery Storage
Nightpeak says it is still advancing more flexible power and large-load projects. It gave no dates and no sites. So the next questions are simple. Who is the buyer, how much did this cost, and where does the company build next?
For now, one thing is clear. Texas wanted more power on call, and a Tesla-powered battery bank near Houston just doubled its supply of it.
