Mitsubishi Heavy Industries (MHI) and SSE will begin an energy storage system demonstration project using the power grid in the UK's Orkney Islands, which has a high proportion of renewable energy generation in relation to demand. The project will be conducted with the support of New Energy and Industrial Technology Development Organization (NEDO) of Japan. It aims at demonstrating power supply stabilization in the region by introducing cargo container-type large capacity energy storage system using a lithium-ion rechargeable battery, which has a maximum power output capacity of 2 MW. The storage system is slated to be handed over for operational use in early 2013.
The energy storage system will have the capacity to store approximately 800 kWh nominal, 500 kWh normal usage. Each battery container houses more than 2,000 units of lithium-ion rechargeable batteries.