Startup GMZ Energy raises $14 million to make materials that convert heat to electricity, including a solar hot thermal product and chips to draw electricity from car exhaust pipes. Martin LaMonica is ...

About 20% of a home’s energy use goes toward water heating, according to the U.S. Department of Energy. If you’re looking to save on energy for financial or environmental reasons, you might consider ...

The author uses a pump with a garden hose outlet to supply water to a mounted showerhead. Construct a simple, inexpensive rainwater shower system heated with an off-grid solar water heater. If you ...

The Thriamvos company truck pulls up at noon outside the four-storey building in the heart of Nicosia. It’s the third rooftop installation of a solar-powered water heating system that Petros Mihali ...