We are net consumers. Our 5kW photovoltaic only provides about half our electricity. Our home is large, and being in Phoenix the A/C needs to run most of the year. The solar would have only provided about 40% if we hadn't also upgraded our kitchen appliances to the latest Energy Star, and had a radiant barrier placed under our roof at the time the solar panels were installed. We also use a programmable set back thermostat, CFLs and LEDs wherever possible. My wife even uses a solar clothes dryer, a.k.a. clothes line instead of the electric dryer.
I would have liked to install a higher capacity photovoltaic system, but our utility, SRP, only provided an incentive up to 5kW. That made 5kW the most cost effective for us.
I would love to do more upgrades to improve energy efficiency, but they do not seem cost effective at this time. We have two 10-SEER A/C units, I think they are 2-tons each. Upgrading to a 16-SEER would take a while to pay itself back - but if our 20 year old units ever break I would upgrade then. Our pool pump is already high efficiency, but I see there are now even higher efficiency ones available - at a price. The next time our hot water heater goes out I am going to strongly consider replacing it with a heat pump type - they are very efficient, especially when the garage they are in has an ambient temperature almost equal to the hot water.
Had six Nissan LEAFs in five years. Hope to get another.
Retired Nissan Employee (NTCNA-AZ). Opinions expressed here are my own.