If you truly think that electricity from the sun and water are "free", I'm at a stopping point on that topic. The idea that anything is "free" is a philosophical discussion.You can make free electricity from wind sun and water.tell me how you make your propane? Since we are dependant on sombody else and you are not?
The value of propane is that it's in the OP's back yard and he can access it any time. Electricity can be shut off with the flick of a switch. That's highly unlikely I will readily admit but it is a fact that when you sign up for net metering, the government has the right to control that meter. I do believe that the gov't in a location in Colorado did just that and it is naive to think that a government will not use any power which it has been granted. We have thousands of years of history that demonstrate that.