I think the solar idea sounds perfect, even at $5500. You would then be able to basically use as much electricity as you want without the worry of prices going up, and you can stop making spreadsheets and use the time to enjoy all your electricity in some new way of your choosing.

Hot Country + Solar = no brainer

Actually, if you like spreadsheets, you'll love Solar. I have a small remote solar system setup, and with the help of Bitt I am able to monitor stats and make graphs from about 120 miles away. Some of the Solar regulators chuck out a huge amount of data if you ask them to.

Cheers

Cris