<img src="https://ml.globenewswire.com/Resource/Download/e491879a-7067-4b84-b74e-3ec1f45c26af?size=2" nborder="0" align="left" hspace="5" vspace="5" title="eos_logo_2c_pri_pos_rgb_300ppi.png" alt="Eos Energy Enterprises, Inc."/>The collaboration pairs utility-scale solar with lithium-ion energy storage and American-made, zinc-based long-duration energy storage to deliver new clean energy and capacity to the PJM gridNEW YORK and PITTSBURGH, Sept. 02, 2026 <a href="https://www.globenewswire.com" target="_blank">(GLOBE NEWSWIRE)</a> -- <a href="https://www.globenewswire.com/Tracker?data=gI2RTUj3lasRwmCrkHkcQCLc1dJKXBC78_1rBZKmAxEgk-32kNQV9HKVdd7ExtK4ey-FjyIiNf3zz2bIGjIgwg==" rel="nofollow" target="_blank" title="">MN8 Energy (MN8)</a>, a scaled power platform, <a href="https://www.globenewswire.com/Tracker?data=FsbCdAawO88lawu0grvTzx-bIL9yLNuopBWzX8qo5LA2PtNzvA3IxWIQukGlI1l83fH8dyOVDBm31aAVkUCe7mB6FTNOpp_0Mk_cvNHZDkAQ3_o4SzT-pv4mWFNOA--c" rel="nofollow" target="_blank" title="Eos Energy Enterprises, Inc. (NASDAQ: EOSE)">Eos Energy Enterprises, Inc. (NASDAQ: EOSE)</a>, a U.S. manufacturer of zinc-based long-duration energy storage systems, and <a href="https://www.globenewswire.com/Tracker?data=PGx4QxI0g-s8MBEuXSwYMOrbp1uduZXmOmtm_0m1-zyVyHbNDWd97PmkurIjI38X5zX6j7jrfRupVzomwKB_1A==" rel="nofollow" target="_blank" title="">Google</a>, today announced a collaboration to deliver new, clean, around-the-clock energy resources to the PJM grid in support of growing demand in the region. Owned and operated by MN8, the project combines 86 MW of utility-scale solar, 10 MW/100 MWh of Eos’ Z3™ zinc-based long-duration energy storage, and 70 MW/280 MWh of lithium-ion energy storage. The integrated portfolio adds new clean, dispatchable capacity to the grid serving Google’s data centers in the region, including a planned project in West Virginia. The solar project is expected to reach commercial operation in 2028, with lithium-ion storage and long-duration storage following in 2029 and 2030, respectively. An Innovative Capacity Solution MN8 custom-designed its Mammoth Solar project in Kanawha County, West Virginia as an integrated utility-scale solar system with short- and long-duration storage that converts intermittent renewable generation into a single, dispatchable resource. The multi-technology solution fills a critical grid need by delivering clean capacity matched to data center load profiles. It's the first commercial-scale long-duration energy storage deployment in West Virginia. “At Google, we’re committed to backing solutions that both serve our data center capacity needs and accelerate progress toward cleaner, more affordable energy systems,” said Lucia Tian, Director, Advanced Energy Technologies at Google. “This collaboration with MN8 and Eos aims to deploy a smart portfolio of round-the-clock technology solutions to help power our digital infrastructure, while creating meaningful economic benefits for West Virginia.” Under the agreement, Google will purchase the energy, capacity, and clean energy attributes of the project, advancing the company’s <a href="https://www.globenewswire.com/Tracker?data=M0qnfy5b5fZSt1vurBqzhSnu-Ifn8_uwdcxom4pgWXYXRT0PF8kb7ntsR1R3uk1S9zJdYtCuEZc3KXJ0_v6uYE-cil98-3iT-o6AWbfcqkCOlEIlBeD4CIubFCEEu8cheMEhfz-VdKWUIdNMKckIN9xq2oBHbmv3KnwsDbYDpTRUsbPtPLlFgK_9QhYOB6CgnTQXJhTnoHa5Q5xbQJpV5JPQM8ypjCS04y8N13kf7Ig=" rel="nofollow" target="_blank" title="">commitment</a> to bring new capacity to the grids where it operates. The project is part of Google’s broader efforts to accelerate LDES technology commercialization with the aim to rapidly bring its potential to communities everywhere — making reliable, affordable electricity available around the clock and supporting the resilience of grids as they integrate growing amounts of renewable energy sources. “This project reflects what MN8 does best: understanding a customer’s unique energy profile and building a solution around it,” said Jon Yoder, President and CEO of MN8 Energy. “Because Google was willing to pair next-generation storage with utility-scale solar, we could engineer proven and emerging technologies into one dispatchable resource – and deliver clean, around-the-clock power where the grid needs it most.” Deploying American-made Long-Duration Energy Storage The project marks Google’s first project that uses Eos’ American-made Z3 technology and the first project under the previously <a href="https://www.globenewswire.com/Tracker?data=Fi_nEb9VRyoUTMSbJ9ssfgDFxYEq-spPa3hF9Q6h4RMr2aBidPKPf5NXjoddd-34ShDeBFi_H2MfXpQO4l-3FH9v0MGukd6N2fQsPY7qhJGIu9PyRPovi95oDDVgkY729QYJ4Mzw-yxazxGSpvVzw7G9fcgraw0V16iXXPtH--NRQuC83ViTZxFwx46w7BDUKRNnp2WK-QxilDu6UBD1sw==" rel="nofollow" target="_blank" title="">announced</a> MN8-Eos Master Supply Agreement. The 10 MW/100 MWh system is designed to provide 10 hours of storage, extending the availability of solar generation beyond the shorter-duration energy storage resources and enabling the combined portfolio to deliver dependable capacity across more hours of the day. This project will prove how Eos’ aqueous zinc chemistry can support critical grid infrastructure. “The grid needs more from every megawatt of new generation,” said Nathan Kroeker, Chief Commercial Officer at Eos. “Our work with Google is focused on deploying American-made long-duration storage where it solves real grid reliability challenges. Z3 extends the value of clean generation across more hours, strengthens the overall portfolio, and delivers more dependable capacity when it’s needed most.” Creating Economic Benefits in West Virginia and Across the Region Built on a reclaimed coal mine in West Virginia, this project is expected to create economic opportunity in a community with a long energy history. Based on MN8’s estimates, it represents up to $350 million in capital investment and is expected to generate approximately $4 million in property tax revenue for the county and local schools over the first 20 years of operations, with millions more in the 15-20 years that follow. Construction is expected to create approximately 200 jobs, with additional full- and part-time roles supporting the project throughout its operating life. The project's impact also extends across the PJM interconnection, connecting new energy infrastructure in West Virginia with American manufacturing and regional innovation. MN8 and Eos maintain significant operations and workforces across the Mid-Atlantic and Northeast, from MN8 projects spanning the region to Eos headquarters and manufacturing in Pittsburgh, Pennsylvania. Together, the companies support domestic supply chains and regional economies. About MN8 MN8 is a scaled power platform that develops, owns and operates energy assets for the enterprises driving the new American economy. We help customers secure scaled power to support growth, resiliency and long-term energy goals. With more than 4 gigawatts of operating and under-construction assets across 29 states, MN8 is one of the largest independent power producers in the United States, serving more than 200 customers — including leading AI and hyperscale technology companies, Fortune 500 corporations and government agencies. Our integrated platform spans utility-scale solar, battery storage, EV and electrification infrastructure, and powered land capabilities. Founded within Goldman Sachs and operating independently since 2022, MN8 pairs institutional-grade financial discipline with full-lifecycle execution capabilities. MN8 is headquartered in New York, with offices in South Florida, Dallas and Madrid, Spain. Learn more at mn8.com. About Eos Energy Enterprises Eos is accelerating the shift to American energy independence with positively ingenious solutions that transform how the world stores power. The Company’s BESS features the innovative Znyth™ technology, a proven chemistry with readily available non-precious earth components, that is the pre-eminent safe, non-flammable, secure, stable, and scalable alternative to conventional technology. The Company’s BESS is ideal for utility-scale, microgrid, commercial, and industrial long-duration energy storage applications (i.e., 4 to 16+ hours) and provides customers with significant operational flexibility to cost effectively address current and future increased grid demand and complexity. For more information about Eos (NASDAQ: EOSE), visit eose.com. About Google Google's mission is to organize the world's information and make it universally accessible and useful. Through products and platforms like Search, Maps, Gmail, Android, Google Play, Google Cloud, Chrome and YouTube, Google plays a meaningful role in the daily lives of billions of people and has become one of the most widely-known companies in the world. Google is a subsidiary of Alphabet Inc. Contacts Investors: ir@eose.com Media: media@eose.com Forward Looking Statements This press release includes forward-looking statements within the meaning of the Private Securities Litigation Reform Act of 1995. Such statements include, but are not limited to, statements regarding the expected timing, construction, commissioning, deployment, operation and performance of the project described herein; the expected commercial operation dates of the solar generation, lithium-ion storage and long-duration energy storage components of the project; the ability of the project to provide clean, dispatchable or dependable capacity to the PJM grid; the anticipated benefits of Eos' Z3™ technology and aqueous zinc battery chemistry; the commercialization, deployment, adoption and market opportunities for long-duration energy storage; the anticipated benefits of Eos' technology for grid reliability, energy resilience, renewable energy integration and data center power demand; expected economic, employment and community benefits associated with the project; anticipated domestic manufacturing, supply chain and regional economic impacts; and other statements that are not historical facts. Forward-looking statements generally may be identified by words such as "anticipate," "believe," "could," "expect," "intend," "may," "plan," "potential," "project," "should," "target," "will," "would," and similar expressions. These forward-looking statements are based on current assumptions, expectations and beliefs and are subject to substantial risks and uncertainties that could cause actual results to differ materially from those expressed or implied by such statements. Such risks and uncertainties include, among others, risks related to the development, financing, construction, commissioning and operation of the project; the ability of the parties to satisfy project development milestones and timelines; permitting, regulatory, interconnection, supply chain, manufacturing and procurement risks; the performance and reliability of the technologies deployed in the project; market acceptance and commercialization of long-duration energy storage technologies; changes in economic, market, regulatory or industry conditions; and other risks detailed from time to time in Eos' filings with the U.S. Securities and Exchange Commission, including its Annual Report on Form 10-K and Quarterly Reports on Form 10-Q. Eos undertakes no obligation to update or revise any forward-looking statements contained herein, whether as a result of new information, future events or otherwise, except as required by law. <img alt="" src='https://ml.globenewswire.com/media/MDYwMzM4MDUtYTRiMy00MzRlLWI4ODEtOGJiYjlkMTMyYjVlLTEyMTQ2OTgtMjAyNi0wOS0wMi1lbg==/tiny/Eos-Energy-Enterprises-Inc-.png' referrerpolicy='no-referrer-when-downgrade' />

MN8 Energy, Google, and Eos Energy Enterprises Bring Advanced Clean Energy Solutions to West Virginia

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