Residential solar in the US is big business. The industry grew by 30% in 2021 when more than 4.2 gigawatts of residential solar was installed and there are now 121 gigawatts of solar power nationwide, from the sunny southwest to regions less well known for their cloudless climate.Even though tons of people are installing solar, it can be a difficult decision to make, since each situation is different. A roof might be angled or shaded differently than a neighbor’s. A utility might offer a great (or terrible) net metering deal,…
