Does anyone know what kind of battery power is required in order to sustain a cruise ship. Also modern day cruise ships have telephones and internet. How is this accomplished? And, in isolated locations in the world such as some parts of Alaska for example, what kind of electrical setup do they need in order to support a villiage? BTW how exactly is electricity generated? If chemical, what chemicals, what acids, etc? And in addition, what are solar panels made of, how does it work?