For most folks, planning a power station program - whether for your house during emergencies, or for an RV, boat, or vacation home, look to diesel or gasoline powered generators to fill up those batteries for later use. Thankfully though, solar technology is both coming down in price as well as becoming much more efficient. Plus, now you can even get portable solar panels that are easy to put out in the sun when you need them... and pack away when you don't.