The Energy Technologies Institute (ETI) is to identify ways of providing a cost-effective deployment of tidal stream technologies at commercial scale in UK waters energy minister Charles Hendry announced on Wednesday 23 May. The ETI is a government and private industry venture to help accelerate the development of low-carbon technologies. The project will seek to develop, identify and prove the best routes and supply-chain options to commercially-viable tidal stream technologies when deployed at array scale. The first phase will seek to identify ways to reduce costs in tidal arrays and will cost £3.2mn. The second phase will seek to demonstrate these developments in practice and will cost an estimated £10mn. Hendry said reducing costs was "critical" to accelerating the development and commercialisation of Tidal Energy Converter device arrays.