Solar water heaters can lower energy bills and reduce emissions, but they're not right for every home. Here's what to know ...

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 ...

Taking a hot shower can literally mean pouring money down the drain. The average American household spends almost $300 pear ...

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 ...

Technology is changing, public awareness is increasing, and the regulatory environment is in flux—we talk with Cala System’s CEO Michael Rigney on what the future has in store. Cala Systems is a ...

The sun can provide limitless heat for buildings and industrial processes. But using that heat on demand means capturing and storing solar thermal energy for when the sun isn’t shining. Researchers ...