I had been into solar for quite some time. Out on So. Water Caye. (on the reef)
Your best starting point for knowledge and prices
would be the catalog from:
New England Solar Electric
1-800-914-4131
www.newenglandsolar.com Dont even think about wind power. You will just throw your money away and have nothing but problems.
best bet is a good solar system, starting around $2000 along with a small gen set and butane for your frige & freezer