American engineers use a wide range of modern technologies to drive up the output of their solar cells. One of the most impressive examples is shingled design.
To make a shingled solar panel, engineers slice cells into several strips and overlay them to create an electrical connection between them. It’s a bit like laying shingles on a roof. A shingled solar panel doesn’t need busbars or thin metal connectors. The panel gets a more uniform look and becomes more durable.
The best thing about shingled design is the way it improves the shading tolerance of a panel. Cells in a standard panel are connected in series which means that their performance depends on one another. Shingles are connected in parallel which makes them independent. In general, a shingled solar panel is 40% better at fighting shading than a standard panel.
Making shingled solar panels is difficult and expensive which is why so few manufacturers use this design — the only one that immediately comes to mind is Solaria