I have looked into solar panels, and, at least here in Southern California I haven't found a "good" deal. Everyone seems to be "installing for free" and financing in weird ways. I do love the idea of generating my own electricity though, so I will put it in my radar.
You are right solar ovens and pasteurizing kits are definitely something I should perfect. I haven't used either of those kits myself, but have helped my children work on them for Science Projects. The water project was extremely impressive for me, and having the water reach 145 degrees Fahrenheit is only easy if you are working with 16 oz of water at a time, which is not much water.
The solar ovens... I'll write about them again as we are building some this week!
Thanks for the follow :)
edited because I wrote 100 degrees Fahrenheit instead of 145