The sale is expected to complete within the next few months, subject to closing conditions. About Tidal Generation Ltd. 1. Rolls-Royce will sell TGL to Alstom UK Holdings Ltd, a wholly owned subsidiary of Alstom. 2. TGL is a wholly owned subsidiary of Rolls-Royce Holdings plc that is managed and reported in the Energy business segment. 3. In September 2010 TGL’s 500kWe tidal stream turbine concept demonstrator unit was deployed at the European Marine Energy Centre’s (EMEC) offshore test site, off the Orkney Islands in Scotland, and generated over 200 megawatt hours of electricity supply to the grid. It was the first EMEC located project to receive Renewable Obligation Certificates.