I think they will have the biggest impact over this summer.
Considering right now, natural gas is cheaper than solar.
Now, it's just the panels. No batteries.
The battery bank just wasnt cost effective enough to justify.
I've been thinking on installing this nest thermostat, and really pumping out the juice from the panels. Setting the AC to 65 from 7am-1pm then set it to 72from 1pm-7am.
If I get my garage built this summer I'll put just as many panels on it as well. Not that it would reduce my bill any more than that. Just setting up for when battery back up is more cost effective.