SonnenBatteries said this week it planned to take part in a pilot project on grid congestion management – something akin to, but slightly removed from, Grid balancing. It explained that what can sometimes happen is like a traffic jam on a motorway, as the electricity grid experiences blockages at points where it is over-burdened. These bottlenecks can be compensated by means of targeted charging or discharging of the system and Sonnen plans to try using its virtual battery, made up of thousands of home batteries, to help grids address this issue. This German project is only coming to light now, but began in April 2019 with TransnetBW, a local transmission operator in Baden-Württemberg, a region of Germany, and energy distributor…