SolarMax Technology, Inc. has announced that its wholly owned subsidiary, SolarMax Renewable Energy Provider, Inc., has signed a major EPC agreement with Longfellow BESS I LLC for a utility-scale battery energy storage project in Pecos County, Texas. The contract is valued at approximately $127.3 million.
Key Highlights:
- Project: 430 MWh Battery Energy Storage System (BESS)
- Location: Pecos County, Texas, USA
- Client: Longfellow BESS I LLC
- EPC Contractor: SolarMax Renewable Energy Provider, Inc. (Subsidiary of SolarMax Technology, Inc.)
- Contract Value: Approx. $127.3 million
- Equity Investment: SolarMax to acquire 8% stake in Longfellow BESS I LLC
- Completion Deadline: June 30, 2026
- Purpose: Improve grid stability and energy affordability in Texas
Under the agreement, SolarMax will provide full-scope EPC services, covering design, engineering, procurement, installation, construction, testing, startup, and commissioning of a 430 MWh battery energy storage system (BESS) and its associated high-voltage interconnection infrastructure. The project is expected to be completed by June 30, 2026.

As part of the deal, SolarMax will also acquire an 8% equity stake in Longfellow BESS I LLC, aligning the company’s financial interests with the long-term success of the project.
“This contract represents a key step in scaling our commercial footprint in the United States and validates our strategy to diversify beyond residential solar into commercial-scale EPC services,” said David Hsu, CEO of SolarMax. He added that supplier discussions are in final stages, and the company is confident in meeting the mid-2026 delivery goal.

The BESS installation is designed to enhance grid stability and energy affordability in Texas by storing renewable energy for use during peak demand periods. It supports the state’s broader clean energy transition and addresses the growing need for reliable energy infrastructure.
SolarMax’s entry into large-scale energy storage projects highlights its transformation into a more diversified clean energy provider, with plans to pursue additional utility-scale opportunities across the U.S.
Source: https://irsites.com/smxtpr-2/
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I am a Professional Civil & Structural Engineer having more than 4 years of experience in Engineering, Procurement and Construction industry. Here i sharing the latest updates of EPC Projects and Construction News.