Cecil
I want to get geothermal heating and cooling and wind power. One thing I noticed my furnace doesn't run b/w 10am and 8pm even below freezing outside with my south facing windows. $700 to heat 16x76 new mobile in the worst winter I can remember on propane.
I've noticed the same with my large south facing windows. Sometimes it can actually get quite warm on a sunny day in the winter. However like an idiot I have cathedral ceilings which negates the geothermal heating and cooling a little.
This will be the year to caulk all the logs and reinforce insulation around the windows. And another power washing and staining of the logs which I am not looking forward to.