When you put in commercial solar, you lessen the demand from customers for common power era through fossil fuels. Though we don’t particularly track 20kW systems, we do monitor 10kW & 30kW pricing – historic pricing trends for 30kW systems might be viewed within the graphs below: I used to https://100kwsolarsystemwa.food.blog/2024/09/19/7-7kw-solar-system-a-smart-choice-for-homes-in-western-australia/