But the colony question: how much additional kWh must be imported — but in context, if panels generate 350 kWh/day, but storm has 9 sols, assume no generation, so they need 8×3.2×9 = 230.4 kWh in storage. Since the system generates during normal days, but not during storm, and assuming initial storage is zero, they must import 230.4 kWh of energy. - Abu Waleed Tea