A startup in Africa is testing a hypothesis. Can cheap solar panels and batteries do for electricity what mobile phones did for communication? Today, mobile phone subscriptions are more common than grid
Lithium-ion batteries were first introduced to the public in a Sony camcorder in 1991. Then they revolutionized our lives. The versatile batteries now power everything from tiny medical implants and smartphones
A 30% U.S. tariff on imported solar panels put in place last winter should have caused prices here to jump. But when tariffs are unleashed, as businesses are learning, things don’t always go as expected.
Researchers at the University of British Columbia have developed a new kind of solar cell that can convert sunlight into electricity, but instead of using electronics like most solar cells, this particular