Just got solar and heat pumps in December - albeit the latter is mostly for cooling due to the direct southern exposure we have. I'm impressed with their production. Even with the solar min, and "cold" season we're having, I'm covering 80% of my electric to date. By the time the equinox rolls around I'm sure I'll be at 100%, and then will net-meter all warm season and get my ROI in 5 years as well.