Quote Originally Posted by Not_A_Llama View Post
On an industrial scale, cold storage is considered one of the few *real* ways to store energy, in the sense that you can run the compressor balls-out during times of peak generation (lowest cost, in my world), and the "excess cold" carries forward to the times when the compressor isn't running. I don't know about the cooling ranges achievable with home systems, or the quality of insulation, but you might be able to tweak your thermostat to make the whole rig battery-free.
I'm going to have to sober up before completely digesting this one.