A new NREL report has found that some 5m US commercial energy customers could currently save significant amounts on their energy bills if they installed battery storage – and with the falling cost of storage, that’s a number set to rise. If commercial customers take on board these findings, battery storage vendors should see dramatic growth in sales. The report identified $15 per KW of demand charges as a bottom line figure that once reached the cost of installing battery storage is offsets by the net benefit of avoiding the charge. Demand charges are additional payments utilities place on their commercial customers for using energy at peak times. Demand charges are typically non-linear across a utility’s network, structured so that…