I'm trying to figure out why my three Powerwall 2 system is limiting the Powerwall charge rate to 10kW minus the current home load, when charging from the grid during Storm Watch. The three Powerwalls should be able to charge at 15kW continuous. And my home can pull more than 10kW from the grid, so the limitation is not there. My inverter is 10kW, so my max charge rate from solar is 10kW, but I didn't think that should limit the rate from grid->powerwall. Any ideas?