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Posted on September 28, 2021 by  & 
External Company Press Release

ESS Inc Contracts With Enel Green Power España

ESS Inc. Contracts With Enel Green Power España to Deliver 17 Energy Warehouse™ Long-Duration Iron Flow Battery Systems
ESS Tech Inc, a manufacturer of long-duration iron flow batteries for commercial and utility-scale energy storage applications, announced that it has closed an order with Enel Green Power España to deliver 17 ESS Energy Warehouse iron flow battery systems.
The long-duration batteries will be used to support a solar farm in Spain as a part of a broader EU-wide engagement, providing resilience for the local power grid. With a combined capacity of 8.5 MWh, the ESS systems will be among the largest battery storage resources in Spain.
"We are 100% committed to energy storage as an essential complement to our expanding portfolio of renewable energy projects," said Pasquale Salza, Head of Long-Duration Storage and Hybrid Systems for Enel Green Power. "With this project, we're going to assess and validate the ESS flow batteries, which we selected due to their right combination of long-duration capacity, long-life performance, environmental sustainability and safe operation."
"Our systems passed a 6-month technology and company readiness assessment - meeting Enel Green Power España stringent performance, durability and cost requirements to become an Officially Qualified Global Vendor. Another key factor in their decision is that our batteries are covered by a comprehensive insurance plan underwritten by Munich Re, the world's largest reinsurance company," said Eric Dresselhuys, CEO of ESS Inc. For further information see the IDTechEx report on Energy Harvesting Microwatt to Gigawatt: Opportunities 2020-2040.
ESS is collaborating with several key partners on this project, including Loccioni, a global systems integrator with projects in over 45 countries. The company is also working with Enertis, a global consulting and engineering firm headquartered in Spain.
About Enel Green Power
Enel Green Power®, within the Enel Group, develops and operates renewable energy plants worldwide and is present in Europe, the Americas, Asia, Africa and Oceania. A world leader in clean energy, with a total installed capacity of around 49 GW and a generation mix that includes wind, solar, geothermal, and hydropower, Enel Green Power® is at the forefront of integrating innovative technologies into renewable energy plants.
About ESS Inc
ESS Inc. designs, builds and deploys environmentally sustainable, low-cost, iron flow batteries for long-duration commercial and utility-scale energy storage applications requiring from 4 to 12 hours of flexible energy capacity. The Energy Warehouse™ and Energy Center™ use earth-abundant iron, salt, and water for the electrolyte, resulting in an environmentally benign, long-life energy storage solution for the world's renewable energy infrastructure. Established in 2011, ESS Inc. enables project developers, utilities, and commercial and industrial facility owners to make the transition to more flexible non-lithium-ion storage that is better suited for the grid and the environment. For more information visit External Link.
ESS recently announced it would become a public company through a merger with a special purpose acquisition company, ACON S2 Acquisition Corp. (NASDAQ: STWO). Closing of the merger is subject to approval by the shareholders of both ESS and ACON S2 Acquisition Corp. and the satisfaction or waiver of certain other conditions.
Additional Information and Where to Find It
This communication is being made in respect of the proposed transaction involving ESS and ACON S2 Acquisition Corp. ("ACON S2"). A full description of the terms of the transaction is provided in the registration statement on Form S4 (File No. 333-257232) filed with the SEC by ACON S2 that includes a prospectus with respect to the combined company's securities to be issued in connection with the business combination and a proxy statement with respect to the shareholder meeting of ACON S2 to vote on the business combination. ACON S2 urges its investors, shareholders and other interested persons to read, when available, the preliminary proxy statement/prospectus as well as other documents filed with the SEC because these documents will contain important information about ACON S2, ESS and the transaction. After the registration statement is declared effective, the definitive proxy statement/prospectus to be included in the registration statement will be mailed to shareholders of ACON S2 as of a record date to be established for voting on the proposed business combination. Once available, shareholders will also be able to obtain a copy of the S4, including the proxy statement/prospectus, and other documents filed with the SEC without charge, by directing a request to: ACON S2, 1133 Connecticut Avenue NW Suite 700, Washington, DC 20036. The preliminary and definitive proxy statement/prospectus to be included in the registration statement, once available, can also be obtained, without charge, at the SEC's website ( External Link).
Participants in the Solicitation
ACON S2 and ESS and their respective directors and officers may be deemed to be participants in the solicitation of proxies from ACON S2's stockholders in connection with the proposed transaction. Information about ACON S2's directors and executive officers and their ownership of ACON S2's securities is set forth in ACON S2's filings with the SEC. To the extent that holdings of ACON S2's securities have changed since the amounts printed in ACON S2's Registration Statement on Form S-1, such changes have been or will be reflected on Statements of Change in Ownership on Form 4 filed with the SEC. Additional information regarding the interests of those persons and other persons who may be deemed participants in the proposed transaction may be obtained by reading the proxy statement/consent solicitation statement/prospectus regarding the proposed transaction when it becomes available. You may obtain free copies of these documents as described in the preceding paragraph.
Source: Trevi Communications Inc
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