Total Voting Rights

31 May 2013

Hydrogen Group plc ("Hydrogen")

Total Voting Rights

In conformity with the Disclosure and Transparency Rules, Hydrogen confirms that, as at 31 May 2013, Hydrogen's total issued share capital is 23,705,241 ordinary shares, carrying voting rights on the basis of one vote per share.

There are no shares held in treasury.

Therefore, the total number of voting rights in Hydrogen is 23,705,241.

The above figure may be used by shareholders as the denominator for calculations to determine if they have a notifiable interest in Hydrogen under the FSA's Disclosure and Transparency Rules, or if such interest has changed.

For further information, please contact:

Hydrogen Group plc +44 (0)20 7090 7737

Helen Perkins

Interim Company Secretary

Oriel Securities Limited (Nominated Adviser) +44 (0)20 7710 7600

Nicholas How

Tunga Chigovanyika