It designs, manufactures, and integrates electrolysers based on proton exchange membrane (PEM) technology to produce green hydrogen using renewable electricity and tap water.

ITM Power was founded in June 2001 in Saffron Walden, Essex and originally manufactured fuel cells before expanding into electrolysers.

[15] ITM Power is currently engaged with industry and academia partners in several projects to deploy its technology and products in existing and emerging markets.

Comprising a partnership including ITM Power and Shell, it is funded by the European Commission's Fuel Cells and Hydrogen Joint Undertaking (FCH JU).

Following two years of construction, Shell launched[16] Europe's largest hydrogen electrolysis plant at its Rhineland Refinery in Wesseling, Germany.

In October 2020, the REFHYNE II consortium, which aims to install a 100-MW electrolyser[18] at Shell's Energy and Chemicals Park, Rheinland, secured a EUR-32.4-million grant[19] from the European Climate, Infrastructure and Environment Executive Agency.

[21] The trial was designed to determine the level of hydrogen which could be used by gas consumers safely and with no changes to their behaviour or existing domestic appliances.

ITM Power installed an electrolyser driven hydrogen refuelling station (HRS) named Hfuel at the University of Nottingham in 2012.

[28] It was the first of three such stations launched under the pan-European HyFive Project,[29] funded by the FCH JU and the UK Government Office of Low Emission Vehicles (OLEV).

[30] This station uses a solar photovoltaic array to produce renewable hydrogen on-site for public and private fleets operating fuel cell electric vehicles to recharge.

In 2021, the division was established as a separate, wholly-owned subsidiary,[34] owning and operating a portfolio of 12 publicly accessible HRS assets.

[36] ITM's assigned project was to build an electrolysis based hydrogen refueller to be used as transport fuel on the Isle of Wight.