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On paper , Nissan ’ s residential energy storage offering , which will be available to pre-order in Europe this September , doesn ’ t differ greatly from BMW ’ s proposition . The xStorage unit , a venture between the automaker and power management company Eaton Electrical , uses recycled electric vehicle batteries to connect to the grid or a home PV system . The retired Nissan LEAF batteries then charge up when power is cheaper or sufficient energy is generated from solar panels . Consumers can then sell their stored energy back to the grid when demand and costs are high .

Nissan has also pioneered a vehicle-to-grid storage scheme for LEAF owners in the UK in partnership with Italian utility Enel and National Grid . Under the pilot , 100 drivers will use bi-directional charging stations to sell stored power from their car back to the grid at peak times .

28 September 2016