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Press Release 

9 January 2013

Acta S.p.A.

("Acta"or "the Company")

Notification of Major Interest in Shares

The Company has received notification from Legal & General Group Plc ("L&G") informing it that as at 7 January 2013, L&G directly and indirectly hold, in aggregate, 21,000,000 ordinary shares of EUR 0.006 each in the share capital of the Company ("Ordinary Shares"), representing 14.95% of the voting rights of the Company that current stands at 140,431,939 Ordinary Shares. No treasury shares are held by the Company.

- ENDS-

For further information please contact:

Acta S.p.A

Paul Barritt, Chief Financial Officer

Tel: +39 050 644281

www.actagroup.it

Altium Capital (Nominated Advisor)

Adrian Reed / Dom Orsini

Tel: +44 845 505 4343

Seymour Pierce Limited (Broker)

Mark Percy / David Banks

Tel: +44 (0)20 7107 8000

Media enquiries:

Abchurch Communications Limited

Ashleigh Lezard / Jamie Hooper

Ashleigh.lezard@abchurch-group.com

Tel: +44 20 7398 7729

www.abchurch-group.com

About Acta S.p.A.

Acta S.p.A. is a developer and manufacturer of a range of clean energy products. Its product line includes market-leading compact hydrogen generators (electrolysers) which produce pure, dry and compressed hydrogen in a way that is easy-to-use and completely safe, and the Company is committed to integrating its award-winning electrolysers with renewable energy sources.

Acta's cost-competitive electrolysers are based on its proprietary, inexpensive environmental catalyst and hydrogen conversion technologies. These products help overcome the barriers to the adoption of fuel cells, most notably the lack of a local hydrogen infrastructure.

Acta's low-cost hydrogen generators represent a unique breakthrough in electrolyser technology. They can operate using mains power or intermittent renewable energy, and produce clean, dry hydrogen already at pressure for use in fuel cell and other applications. This unique combination of features avoids the system complexity and energy cost of further cleaning, drying and compression of the hydrogen, resulting in a simple, compact, low-cost and highly efficient system that is ideally suited for energy conversion and storage applications. In such applications, which include battery replacement and renewable energy storage, low cost and high efficiency are critical to commercial viability, while hydrogen compression is essential for the energy density of the system. No other water electrolyser currently on the market offers this combination of benefits.

Acta is focusing on delivering its products to markets with high volume demand for high-value environmental solutions (transport, back-up power, energy and leisure). It is accelerating the commercialisation of its products via partnerships with original equipment manufacturers (OEMs), distributors, and agents in these sectors, and intends to drive down production costs at high volume via contract manufacturing.

Acta S.p.A. is based near Pisa, Italy, and was admitted to trading on AIM in October 2005.

www.actagroup.it


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