The Solar Calculator is regularly updated with new ... US Energy Information Administration to estimate building energy use based on different climactic zones across the United States.

Many are familiar with so-called photovoltaic cells, or solar panels, found on things like spacecraft, rooftops, and handheld calculators ... solar energy use has surged at about 20 percent ...

Calculator aesthetics are apparently very important to some people, so Casio Japan has announced a new Comfy JT-200T solar-powered model that relocates its solar cell to the top edge keeping it ...