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

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

Researchers in Malaysia designed a photovoltaic-thermal system that can be used in solar drying, space heating, rooftop systems, and off-grid thermal applications. It relies on a double-pass cooling ...