I just purchased a new GE Heat Pump Water Heater. It saves me 2500 KWH a year. It will also allow me to put the water heating on my battery backup, so we can have hot water during power outages. By the way they are on sale at Lowes for 33% off until 10-5.
Next up is to upgrade my battery backup to run everything in the house during power outages. The recent floods exposed some of my weakness in this area.