MHI to Introduce Large-capacity Lithium-ion Battery Energy Storage System to
Power Grid of Orkney Islands in UK, Jointly with SSE
Tokyo, Nov 22, 2012 - (JCN Newswire) - Mitsubishi Heavy Industries, Ltd. (MHI),
jointly with SSE plc (formerly Scottish and Southern Energy plc), 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 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 2MW (megawatts). The storage system is
slated to be handed over for operational use in early 2013.
The demonstration project will be conducted with the support of New Energy and
Industrial Technology Development organization (NEDO) of Japan, under the
programme of "Development of Technology for Safe, Low-cost, Large-size
Battery System." In the project, Mitsubishi Power Systems Europe, Ltd.
(MPSE), the business base for MHI's power system operations in Europe, and
SSE Generation Ltd., the power generation unit of SSE group, will jointly
provide the energy storage services to Scottish Hydro Electric Power
Distribution plc (SHEPD), the SSE group company that handles power distribution
The energy storage system, which has the capacity to store approximately
800kWh (kilowatt hour) nominal, 500kWh normal usage, consists of two 40ft-long
container units for the batteries and a 40ft-long container unit for the power
conditioning system. Each battery container houses more than 2,000 units of
lithium-ion rechargeable batteries. Power conditioning system container houses
a system for conversion of direct current (DC)/alternating current (A/C) and
the associated input/output controls.
The energy storage system will be installed at SHEPD's Kirkwall Power
Station. In the cases of slight power shortage or power surplus, power is
transmitted from/to the mainland through a submarine cable. When there is too
much renewable energy, exceeding the export capacity of the cable to the
mainland, the energy storage system will import some of the excess energy,
reducing the need to constrain renewable generation at that time.
In July 2010, MHI agreed with SSE to collaborate in the development of
low-carbon energy. The two companies have been studying a broad range of
collaboration, including offshore wind turbine power generation system, carbon
sequestration and storage (CCS) and high-efficiency power generation system.
The energy storage demonstration project using rechargeable lithium-ion
batteries is a part of that initiative. Going forward the two companies will
further strengthen their collaborative relationship and intend to take a lead
in the globally important drive to create a low-carbon society.
About Mitsubishi Heavy Industries
Mitsubishi Heavy Industries, Ltd. (MHI), headquartered in Tokyo, Japan, is one
of the world's leading heavy machinery manufacturers, with consolidated
sales of 2,820.9 billion yen in fiscal 2011, the year ended March 31, 2012.
MHI's diverse lineup of products and services encompasses shipbuilding,
power plants, chemical plants, environmental equipment, steel structures,
industrial and general machinery, aircraft, space rocketry and air-conditioning
systems. For more information, please visit the MHI website at www.mhi.co.jp.
Mitsubishi Heavy Industries
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