The technology behind solar panels is surprisingly basic, so you may be tempted to make your own from scratch. But should you?

Jon covers artificial intelligence. He previously led CNET's home energy and utilities category, with a focus on energy-saving advice, thermostats, and heating and cooling. Jon has more than a decade ...

Individually, the cost for components of a power supply is high compared with buying an off-the-shelf power supply. For example, a 30-amp 5-volt commercial power supply costs about 5 times less than ...