[Karrot_Kream]

This gets complicated and depending on your local regulations, may involve an electrician to certify the work. It's similar to the wiring that goes into adding a generator to your home. If you want something a bit less sophisticated but works nonetheless, you can try to wire solar cells, charge controller, and other stuff to a battery, and then just use the battery directly to power devices. Maybe even have two batteries, one being charged, and one being used. I've had friends do this setup in places where they've been renting.