PROJECT SUMMARY
In November 2024, the U.S. Department of Energy’s (DOE) Loan Programs Office (LPO) announced the closing of an up to $305.3 million loan guarantee ($277.5 million of principal and $26 million of capitalized interest) to Eos Energy Enterprises (Eos) to finance the construction of two state-of-the-art manufacturing lines to produce next generation utility- and industrial-scale zinc bromine battery energy storage systems (BESS) in Turtle Creek, Pennsylvania. Pending additional LPO approvals and completion of an Environmental Assessment pursuant to NEPA, two additional lines in Duquesne, Pennsylvania may also be included as part of the loan guarantee. All four lines combined are expected to manufacture over 8GWh of storage capacity annually by 2026, which is enough to power over 300,000 average U.S. homes instantaneously or to meet the annual electricity needs of approximately 130,000 homes if fully charged and discharged every day.
TECHNOLOGY INNOVATION
Grid-scale storage allows utilities and industrial customers to store clean energy when there is a surplus and use it when energy is relatively more expensive or clean power is unavailable. BESS can provide numerous grid functions, including providing an alternative to traditional fossil fuel electricity generation during demand spikes, being a lower-cost option during periods of normal demand, and providing backup power.
Eos’s technology is designed for long-duration grid scale stationary battery storage. The batteries can achieve 100% depth of discharge, do not degrade based on age, and are rated for 6,000 charge/discharge cycles (~20 years of use) before degradation.
Eos’s zinc-bromine batteries provide an alternative battery chemistry to lithium-ion, lead-acid, sodium sulfur, and vanadium redox chemistries for stationary battery storage applications. Critically, Eos batteries are non-flammable and do not require active cooling to function. Eos already manufactures a zinc-bromine battery. The LPO-financed next generation system, the “Eos Z3™,” will be more energy dense and cheaper to produce than Eos’s previous model.
US-based IP and materials: The project’s intellectual property (IP) is based in the United States. Moreover, 80% of the materials supply is sourced domestically, and Eos plans to source nearly 100% of the materials from the United States in the future. By forgoing scarce critical minerals such as lithium, which are largely imported, the product is better insulated from market volatility and supply chain risk that challenge other battery chemistries. Eos already has several battery supply agreements in place and significant interest from developers and utilities in the Eos Z3 BESS.
ECONOMIC IMPACT
The project is expected to create up to 50 union contractor construction jobs and as many as 650 new operations jobs when at full operational capacity. The jobs created by the project will be based primarily in Turtle Creek, Pennsylvania, with hourly wages paid at least at the prevailing wage and competitive internship and apprenticeship salaries.
COMMUNITY BENEFIT
Eos has engaged in ongoing community outreach efforts to economic and workforce development leaders, educational institutions, and state and local governments—including Literacy Pittsburgh, the Heinz Foundation, Partner4Work, Carnegie Mellon University, and Community College of Allegheny County—to ensure community participation in the project and to attract a strong local workforce.
Eos has created a Clean Energy Careers Program to target local high schools, vocational schools, and trade schools to attract students to apprenticeship opportunities; to provide internship opportunities for 2- or 4-year college and high school students to learn skills from Eos welders, chemical engineers, and other professionals, opening up potential long-term career pathways for those students; and to raise awareness of career opportunities at Eos with local veteran groups, literacy centers, and within the nonprofit community.
PROJECT STATISTICS: Eos
| PROJECT SUMMARY | Owners | Eos Energy Enterprises, Inc. |
| Location | Turtle Creek, PA | |
| FINANCIAL SUMMARY | Loan Program | Title 17 Clean Energy Financing |
| Loan Type | Loan Guarantee | |
| Guaranteed Loan Amount* | 305.3 million ($277.5 million of principal and $26 million of capitalized interest) | |
| Issuance Date | November 2024 | |
| ECONOMIC IMPACT | Permanent U.S. Jobs Supported** | 650 |
* Last Updated November 2024. Approximate amount of the loan approved at closing including principal and any capitalized interest.
** Estimated at the time of closing