Recharge News has a report on a novel form of energy storage being implemented in southern California - Ice Energy begins 53MW storage project with SCPPA.
Rather than building a new power plant to address peak electricity demand needs, Southern California Public Power Authority (SCPPA) will move some 64 gigawatt hours of demand a year to off-peak times using Ice Energy storage systems.
The systems, which connect to existing building air conditioning (AC) units, use off-peak energy overnight to freeze 450 gallons (about 1,700 litres) of water in an insulated tank. The resulting stored energy, in the form of ice, is used to cool buildings during hot afternoons when electricity demand spikes to run traditional AC systems.
Over the next 24 months, SCPPA will pay Colorado-based Ice Energy to install its systems on some 1,500 government, industrial and commercial buildings in the service territories of its member utilities. The project is equivalent to a 53 megawatt capacity peaking power plant. Terms of the deal were not disclosed.
SCPPA and Ice say the project – which is an example of demand-side management – will contribute to grid stability, lower rates for customers, reduce greenhouse gas emissions and allow the integration of more renewable energy by providing additional load to balance off-peak renewable supplies.