TUESDAY 31 JANUARY, 2012 |
Kyocera Unveils Home Solar Power System With Li-Ion Battery Storage
Incorporating lithium-ion batteries into energy storage for home solar power
systems as a package solution is finally about to become a reality - in Japan
Kyocera Corporation and Nichicon Corporation recently announced a deal that will
see Kyocera selling a new energy management system (EMS) combining Kyocera
, inverter and related components with Nichiconís high-capacity lithium-ion battery storage
Japan has been experiencing significant electricity supply instability since the
tsunami and Fukushima disaster last year. Energy efficiency, peak-time shifts
through on-site energy creation and energy storage to stabilise electricity
demand has become increasingly important for the nation.
has experienced a boom since the disaster and by the end of March this
year, more than one million homes in Japan will have installed solar panel
systems. The number of installations is expected to continue to increase
annually by around 12% in the coming years.
One of the challenges of grid connect solar power systems is when there is a
blackout, for safety reasons the system automatically shuts down to ensure
electricity is not being fed into the grid as this could endanger power company
workers seeking to address a fault.
While "islanding" can allow these systems to continue to supply power
to a home during such times - it's of little use if the interruption occurs at
The answer is an additional energy storage system. Traditional lead-based deep
are used in these applications, but they are very bulky and
Kyocera's new EMS system incorporates a lithium-ion battery that can last roughly 5
times longer than conventional deep cycle batteries. The battery has a capacity of 7.1kWh,
weighs just 200kg and measures only 120H ◊ 90W ◊ 35D centimetres.
The system automatically switches to independent operation in the event of a natural disaster or electricity black-out
and offers various operating modes to meet the energy use patterns and needs of
Kyocera will begin selling the systems by the middle of this year and has set a
target of 10,000 units in the first year. If and when these systems will be
available in Australia is not known at this point in time.
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