Subscribing to off-peak hot water used to mean heating your water at night when electricity prices were at their lowest. Today, with rooftop solar pouring into homes and overflowing into the grid when ...

Australian grids have long run a two-tiered pricing scheme for electricity. In many jurisdictions, regular electricity was charged at a certain rate. Meanwhile, you could get cheaper electricity for ...

With the aid of nanotech materials, scientists have engineered a new way to convert the sun's heat into electricity that is roughly eight times more efficient than previously reported solar ...

Startup Cala Systems, which makes seriously smart heat pump water heaters, has secured $5.6 million in seed funding and commercially launched its product. The round was led by the Massachusetts Clean ...