Technical Update

ITM Power PLC
28 March 2008


For Immediate Release                                            28 March 2008



                                 ITM Power plc

                            ('ITM' or 'the Company')

                         Technical Update - March 2008.

ITM Power Plc is developing the technology to provide alternatives to the
present dependence upon hydrocarbon fuels. The technology is based upon the
manufacture of hydrogen by electrolysis from sustainable resources, and its
re-conversion using heat engines or fuel cells.

During January 2008, the Company announced that it had operated an electrolyser
stack at low pressure using inputs in excess of 25kW, and another smaller unit
at a pressure of 50 bar. At that time it had not been possible to operate an
electrolyser at 75 bar as required so that the Home Refuelling Unit (HRU) could
give the ITM bi-fuel hydrogen-petrol car a range of 25 miles when operating on
hydrogen.

The Company is now pleased to announce that it has constructed an electrolyser
stack and operated it at 75 bar using the ITM designed balance of plant, thus
demonstrating all the components of the HRU at full specification pressure for
the first time.

During these tests, an electrolyser stack was pressure tested to 110 bar, and
then operated under the control of the refueller unit to self pressurise up to
the maximum design operating pressure of 75 bar after which it repeatedly filled
an external portable pressure cylinder to the same pressure.

In summary, the present trials demonstrate the capability of the ITM
electrolyser system to operate at the design pressure to charge external
pressure vessels to the operating pressure required to give the ITM car its full
design range of 25 miles.

Jim Heathcote, CEO ITM Power, commented:

'This is a major step in the demonstration of ITM's electrolyser technology and
equally importantly the associated balance of plant. The 75 bar pressure
objective is important because it ensures that the ITM hydrogen car can achieve
the 25 mile range; but once achieved, it also means that the Company can be
confident that it can meet and service many other commercial opportunities for
which the pressure requirements are less than 75 bar; for example, low carbon
homes and standby power systems.'

For further information please contact:

ITM Power plc                                                    01799 542 222
Jim Heathcote, Chief Executive Officer

Panmure Gordon & Co.                                             020 7459 3600
Katherine Roe

Buchanan Communications                                          020 7466 5000
Ben Willey
Richard Darby
Ben Romney

Notes to the Editors:

ITM Power is a developer of low-cost hydrogen technologies. The Company has
developed new materials and processes that dramatically reduce the cost of fuel
cells and electrolysers. The patented membrane materials used in the devices
have higher performance and are 1% of the cost of the industry standard
materials.

Electrolysers work by converting water and electricity into hydrogen and oxygen.
The hydrogen produced can be used as a replacement for fossil fuels and
facilitate zero carbon domestic housing and pollution free motoring.

ITM Power was founded in 2000 and floated on the London Stock Exchange's
Alternative Investment Market in June 2004.







                      This information is provided by RNS
            The company news service from the London Stock Exchange