Alongside private equity company Cerberus Capital Management, battery manufacturer Eos Energy has announced the launch of Frontier Power USA, a new development firm aiming to scale up long duration energy storage (LDES) in the U.S.

With the company’s eyes on gigawatt-scale deployment, the new company is expected to unify Eos’ vertically integrated storage technology stack, capital from Cerberus, and a performance wrap from Ariel Green. Eos and Frontier have already entered into a 2 GWh capacity reservation agreement, the companies say, expanding Eos’ existing backlog as of late March.

Now, Frontier aims to deploy its long-duration storage systems across critical applications, officials say, including AI data centers and utility-scale solar projects. The company will draw from Eos’ multi-GWh project pipeline which is currently undergoing active development.

According to Eos Energy CEO Joe Mastrangelo, the firm believes Frontier will help change the lead times of storage projects at large.

“Frontier Power USA changes the speed of long-duration storage financing and deployment, allowing customers to have faster access to capital and deep expertise in project development,” he says. “We feel confident that this will give Eos a new growth trajectory as we continue to expand manufacturing capacity. The platform pairs our integrated technology stack with institutional capital and a lender-ready performance framework that is designed to deliver what matters most: electrons to the grid.”

Changing the LDES math

With continued electrification throughout a number of sectors and the sheer volume of AI data centers cropping up around the country, the U.S. energy grid is under near-constant duress in some states in the Union. Up until now, Eos officials say, the production times of LDES projects have been far too long to be truly practical solutions at grid scale.

Aaron Maczonis, managing director for Cerberus Capital Management, says Frontier Power USA is set to change that.

“We believe that Frontier Power USA will bring the speed and ability to scale that the grid urgently needs, at a time when the opportunity set is being driven by energy security requirements and sustained growth in power demand from electrification and AI,” he says. “By pairing the company’s execution and deployment platform with Eos’ differentiated long-duration storage technology and expanding U.S. manufacturing base, we believe this model creates a credible path to delivering storage capacity at scale.”

Maczonis continued, saying the new platform is designed to translate already proven LDES manufacturing technology, turning it into a reliable and grid-scale deployable asset. Furthermore, the storage systems Frontier produces will benefit from that, as the production platform looks to keep up with evolving needs and technological advancements.

“As energy storage projects scale, bridging the gap between technology innovation and associated liabilities becomes essential,” says Jamie Daggert, the energy storage practice lead at Ariel Green. “This transaction through Frontier Power USA shows how TPI can play that role, supporting both bankability and repeatable platform growth across the U.S.”

All of this, Eos says, is in service of accelerating the energy shift toward renewables in the U.S. Built for utility-scale, microgrid, and C&I applications, the company’s LDES systems aim to add operational flexibility to the U.S. energy grid, the company says.

Tags: commercial and industrial, Eos Energy Storage LLC, Long Duration Energy Storage (LDES), Microgrid, utility-scale