The partnership enhances pricing stability for Houston residents and businesses and demonstrates an innovative, financeable solution for battery storage operators and energy companies.
Source: GridStor
April 8, 2026 – GridStor, a developer and operator of utility-scale battery energy storage systems, and Axpo, a leading international energy company headquartered in Switzerland, announced today the execution of an Energy Storage Agreement with the Hidden Lakes Reliability Project, a 220 MW, 440 MWh battery energy storage system located in Galveston County, Texas, which began operations in 4Q2025.
In brief:
- GridStor and Axpo have executed an Energy Storage Agreement for the Hidden Lakes Reliability Project, a 220 MW, 440 MWh battery storage system in Galveston County, Texas.
- The partnership enhances pricing stability for Houston residents and businesses.
- The transaction demonstrates an innovative, financeable solution for battery storage operators and energy companies.
“We are proud to work alongside Axpo to support long-term pricing predictability for Houston residents and businesses,” said Chris Taylor, CEO of GridStor. “Our collaboration with Axpo to develop a bespoke transaction structure that unlocks financing for battery storage also contributes to more stable retail electricity rates for customers.”
Lance Titus, Chief Commercial Officer of GridStor, said, “This structure marks a major advancement in risk management product development and sets a strong precedent for financeable solutions for the energy storage industry. Meeting the needs of counterparties with creativity and strong transaction execution is core to how we approach our customers and clients – we are proud to be a trusted provider to Axpo.”
The 100 MW bespoke agreement backed by GridStor’s Hidden Lakes Reliability Project enables Axpo to pass price predictability through to Houston retail customers. The Hidden Lakes project began operations in the fourth quarter of 2025.
Shimon Schaff, Origination Director at Axpo in the U.S., said, “At Axpo, our mission is to help customers achieve their desired energy risk profiles through tailored solutions. Our platform is built to give our customers and industry partners direct access to our trading capabilities and resources. We look forward to deepening our cooperation with GridStor in ERCOT and beyond.”