Electro Power Systems: Partial Exercice of the Overallotment Option

Regulatory News:

Electro Power Systems (EPS) (Paris:EPS) (Euronext – FR0012650166), a forerunner in smart hydrogen-based systems for energy storage today announces that Société Générale, acting on behalf of the Managers, has exercised the overallotment option in connection with its initial public offering on the regulated market of Euronext Paris (compartment C) ("IPO”) at 43.9%, resulting in the issuance of 33,855 additional new shares at the offering price, i.e. €7.30 per share, corresponding to a total amount of €247,141.5.

As a result, after exercise of the overallotment option, a total of 1,975,032 new shares will have been issued for the IPO, representing 37.9% of EPS share capital and amounting to total gross proceeds of approximately €14.4 million.

In accordance with Article 631-10 of the General Regulations of the Autorité des marchés financiers ("AMF"), Société Générale, acting as the stabilizing agent, declares that it carried out stabilization trades on Electro Power Systems (FR0012650166) as follows:

• the stabilization trades began on April 22 2015;
• the last stabilization trade took place on May 20 2015;
• the price ranges within which such stabilization trades took place were as indicated in the table below:

Financial intermediaries

Information available to the Public - Copies of the prospectus in the French language (the "Prospectus”), which received a visa from the AMF on April 7, 2015 under number 15-142 comprising a document de base registered with the AMF on March 17, 2015 under number I.15-012 (the "Document de Base”) and a securities note (the "Securities Note”) including the summary of the Prospectus, may be obtained free of charge on the AMF website (www.amf-france.org) and on the Company’s website www.electropowersystems.com).

Risk factors - Electro Power Systems draws the public’s attention to the business-related risks described in Chapter 4 "Risk Factors” of the Document de Base and the offer-related risks described in Chapter 2 ”Offer-related Risk Factors” of the Securities Note.

About Electro Power Systems

Electro Power Systems (EPS) is a forerunner in smart hydrogen-based systems for energy storage. EPS offers the market’s most accessible and cleanest solutions through its self-recharging technology vertically integrated into an open architecture. The solutions developed by EPS are coupled with the traditional ICT and electric grid and enable intelligent, scalable and sustainable distributed generation and energy management. EPS’ systems storage capacity (10kWh up to 100 MWh) is a response to Energy Transition related-issues ranging from the auxiliary power supply (backup for telecom towers and data centers) to solutions for supporting the electricity grid for transmission and distribution (smart grids and renewables’ integration) and finally to leverage a distributed generation model with a full off-grid infrastructure.

Founded in 2005, the Group has facilities in Moncalieri (Turin) and Aosta in Italy and, together with BNC Corp., in Brighton, Michigan (USA). In the last three years, the Group was named "World Technology Pioneer” by the World Economic Forum in 2012; added to the 100 Cleantech Global list by the Cleantech Group in 2012; selected for the 2014 Cleantech Forum in San Francisco; highlighted as a growing success story at the Cleantech Forum in Rotterdam; selected for the 2015 Tech Tour Growth Forum of Geneva and Lausanne.

Disclaimer

This press release does not, and shall not, in any circumstances constitute a public offering nor an invitation to the public in connection with any offer.

The distribution of this document may be restricted by law in certain jurisdictions. Persons into whose possession this document comes are required to inform themselves about and to observe any such restrictions.

This announcement is an advertisement and not a prospectus within the meaning of Directive 2003/71/EC of the European Parliament and of the Council of 4 November 2003, as amended (the "Prospectus Directive”).

With respect to the member States of the European Economic Area which have implemented the Prospectus Directive, no action has been undertaken or will be undertaken to make an offer to the public of the securities referred to herein requiring a publication of a prospectus in any relevant member State other than France. As a result, the securities may not and will not be offered in any relevant member State other than France except in accordance with the exemptions set forth in Article 3(2) of the Prospectus Directive, if they have been implemented in that relevant member State, or under any other circumstances which do not require the publication by the Company of a prospectus pursuant to Article 3 of the Prospectus Directive and/or to applicable regulations of that relevant member State.

This document may not be distributed, directly or indirectly, in or into the United States. This document is neither an offer of securities for sale nor the solicitation of an offer to purchase securities in the United States or any other jurisdiction where such offer may be restricted. Securities may not be offered or sold in the United States absent registration under the U.S. Securities Act of 1933, as amended (the "Securities Act”), or an exemption from registration. The shares of the Company have not been and will not be registered under the Securities Act, and the Company does not intend to make a public offer of its securities in the United States.

This document is only being distributed to, and is only directed at, persons in the United Kingdom that (i) are "investment professionals” falling within Article 19(5) of the Financial Services and Markets Act 2000 (Financial Promotion) Order 2005 (as amended, the "Order”), (ii) are persons falling within Article 49(2)(a) to (d) ("high net worth companies, unincorporated associations, etc.”) of the Order, or (iii) are persons to whom an invitation or inducement to engage in investment activity (within the meaning of Article 21 of the Financial Services and Markets Act 2000) in connection with the issue or sale of any securities may otherwise lawfully be communicated or caused to be communicated (all such persons together being referred to as "Relevant Persons”). This document is directed only at Relevant Persons and must not be acted on or relied on by persons who are not Relevant Persons. Any investment or investment activity to which this document relates is available only to Relevant Persons and will be engaged in only with Relevant Persons.

This document may not be distributed, directly or indirectly, in or into the United States, Australia, Canada or Japan.

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