My Green Projects

I have always want to do green projects, not just for the challenge but also to save costs. I would like to do the following projects here in my backyard.

Create an aquaponic system, which will grow lettuce, tomato's and tilapia.

Change my VW Polo Diesel so it can drive it on old/used cooking oil.

Put up an small wind generator, so I can provide my own energy (I can not tie it to the grid, because it's not allowed).