Most of the time when we mention lithium-ion storage at Rethink Energy, it refers to stationary systems, often of utility scale. But with fossil fuels currently having a key advantage in transportability, market entrants like Germany’s Instagrid have suggested that portable and integrated battery systems will be key to displacing small-scale fossil-fuel generators, while also opening up opportunities in smart networks and electric vehicle charging. Speaking to Rethink, Instagrid founders Sebastian Berning and Andreas Sedlmayr, detailed to us how the company’s portable battery aims to improve on the performance of diesel generators, while minimizing local sources of pollution, in the same way that electric vehicles are displacing those running on fossil-fuels. The first Instagrid battery is being developed with a…