Sonnen

Kaluza will provide smart flexible energy services combining vehicle-to-grid chargers with domestic energy storage batteries

Households with solar panels and batteries installed can earn savings on their winter bills for excess energy generated in the summer

Network of 100 batteries in homes across the UK will be linked via the cloud to provide demand response services to the grid

Oil giant continues its expansion into clean tech market with proposed acquisition of Sonnen for an undisclosed sum