Some 4.75 million passengers had used the renewable energy-powered tram system in Tochigi Prefecture ... from excess energy produced by household solar installations, the trams were built by ...

But given that lunar spacecraft are solar-powered, how do they survive when they're cut off from the sun? For NASA's Lunar Reconnaissance Orbiter (LRO), which has been orbiting the moon since 2009 ...

While it looks like Airstream's Basecamp 20, the 20Xe is a battery-powered trailer that uses a ... With sleeping space for four and a 600W rooftop solar panel, the 20Xe starts at $76,900.