Electrical Energy Storage Jobs
Electrical grid energy storage is used to manage the flow of electricity within a power grid. For large-scale load levelling on an interconnected electrical system, electric energy producers send low value off-peak excess electricity over the electricity transmission grid to temporary energy storage sites that become energy producers when electricity demand is greater. This reduces the cost of peak demand electricity by making off-peak energy available for use during peak demand without having to provide excess generation capacity that would not be used most of the day.
Grid-connected renewable energy sources such as photovoltaic and wind turbine users can use the electric power network to absorb surplus produced and meet needs during periods when the renewable source is not available through the use of net metering.
At high penetration levels, grid energy storage becomes necessary to absorb the peak solar and wind outputs, when they exceed load demand. Solar and wind are non-dispatchable; they need the grid to accept them whenever they are available.