Smart appliances, which let you control lights and power outlets via your phone, promise to cut energy bills. But research suggests these gadgets are confusing, and can just as easily raise power use.
Who is the smart home for and why has it not taken off as expected? Perhaps because it has been primarily envisioned by and for men.
Smoothing out variable wind and solar is a growing problem. Instead of storing energy with batteries, utilities can adjust the power of millions of devices in buildings and homes.