GridStor Secures $120M for Texas Battery to Bolster Strained Power Grid

PORTLAND, Ore. – March 09, 2026 – GridStor, a leading developer of battery energy storage, has closed a $120 million financing package to build a critical infrastructure project in the heart of Texas. The deal, supported by lending partners NORD/LB and Siemens Financial Services, will fund the ongoing construction of the Gunnar Reliability Project, a 150-megawatt, 300-megawatt-hour battery facility in Hidalgo County.

The project represents a significant step toward enhancing the stability of the Texas power grid, which has faced unprecedented strain from extreme weather and explosive demand growth. Backed by Goldman Sachs Asset Management, GridStor is positioning itself as a key player in the race to build a more resilient and flexible energy future for the Lone Star State.

“This transaction marks a significant milestone in our disciplined portfolio growth, focused on contracted revenues,” said Chris Taylor, CEO of GridStor, in a statement. “Committed capital from two world-class lending institutions underscores the value of GridStor’s reliability contributions to the Texas power grid during a time of unprecedented expansion in the state.”

Fortifying a Power-Hungry Grid

The Electric Reliability Council of Texas (ERCOT), the state's grid operator, is grappling with a monumental challenge. Forecasts predict a staggering 50% surge in peak energy demand by 2030, driven by large industrial consumers, a booming data center industry, and rapid population growth. This surging demand, coupled with the increasing frequency of extreme weather events, has pushed the grid to its limits, leading to repeated conservation appeals and raising the specter of widespread outages reminiscent of Winter Storm Uri in 2021.

Utility-scale battery projects like the Gunnar facility are emerging as an indispensable solution. These systems function like giant rechargeable batteries, absorbing excess electricity from the grid during periods of low demand and high generation—such as sunny afternoons or windy nights—and injecting it back during peak hours when demand skyrockets. This capability is crucial for smoothing out the intermittency of renewable sources and reducing the reliance on fossil fuel-fired “peaker” plants.

Once operational in late 2026, the Gunnar Reliability Project will be capable of dispatching enough electricity to serve the equivalent of 95,000 average Texas households during the hours of greatest need, providing a vital buffer for the Lower Rio Grande Valley region.

The Financial Architects of the Energy Transition

The $120 million financing package is more than just capital; it's a powerful vote of confidence from the financial sector in the long-term viability of battery storage. The participation of NORD/LB, a German commercial bank with a deep portfolio in renewable energy finance, and Siemens Financial Services, the financing arm of the global technology powerhouse, highlights the growing institutional appetite for these critical assets.

For NORD/LB, this deal deepens an existing relationship. The bank has previously financed GridStor’s Goleta Energy Storage Project and provided a letter of credit facility for its portfolio development. “We are proud to have led another successful financing for Gridstor. The closing of the Gunnar BESS project reflects our shared commitment to deploying critical energy storage infrastructure and supporting a more resilient and flexible grid,” said Sondra Martinez, Head of Project Finance-Origination at NORD/LB.

This transaction marks the first partnership between Siemens Financial Services and GridStor, signaling the developer's expanding network of financial backers. “We are proud to provide financing in support of GridStor’s battery energy storage systems in Texas,” said Jim Fuller, Head of Project Finance at Siemens Financial Services, Inc. “The facility enhances power system reliability and supports economic growth in Texas, while providing the community with resilient, clean energy.”

A key element enabling this financing is a previously executed tolling agreement with an undisclosed Fortune 500 company. Such agreements provide a predictable, contracted revenue stream by allowing a third party to pay a fixed fee for the right to use the battery's capacity. This structure significantly de-risks the project for lenders, insulating it from the price volatility of merchant energy markets and making large-scale, capital-intensive projects bankable.

GridStor's Strategic Ascent in a Competitive Market

With the backing of Goldman Sachs Asset Management, GridStor is rapidly carving out a leadership position in the fiercely competitive energy storage market. The company's portfolio now includes 530 MW of battery storage in operation or construction, complemented by a massive development pipeline of over 3 GW of projects across the western and central United States.

The Gunnar project is GridStor’s second major facility in Texas, following the Hidden Lakes Reliability Project in Galveston County. This demonstrates a focused strategy to concentrate resources in markets with the most pressing reliability needs and the highest growth potential. The company's business model targets utilities, data centers, and other large industrial customers who require stable, cost-effective power solutions in an increasingly volatile energy landscape.

Local Gains and a Cleaner Energy Blueprint

Beyond its grid-level impact, the Gunnar Reliability Project is set to deliver tangible benefits to its local community in Hidalgo County. Construction is already underway, supporting a workforce of more than 100 skilled tradespersons and apprentices. Once operational, the facility will contribute significantly to the local tax base, providing new revenue for schools, roads, and emergency services.

Strategically sited adjacent to an existing AEP substation, the project is designed for efficient integration into the regional power system. Furthermore, by facilitating the greater use of renewable energy, the battery system will help reduce the state’s overall carbon footprint and improve air quality by displacing the need for older, less efficient fossil fuel generators. As construction progresses toward its late 2026 service date, the Gunnar Reliability Project stands as a concrete example of how targeted investment and advanced technology are actively building a more stable and sustainable energy infrastructure for Texas.