Not fully. It's on the list of things to do if our income ever decides to match living expenses ever again.
We took off an old solar HWS, put panels in its place and bought a 400L element HWS on a simple timer. The HWS functions as a "battery" as it will stay warm for 4-5 days if we turn the timer off. We downgraded the element so it wouldn't use more than the panels supply.
If you have the roof space, a solar HWS could be the go, or a heat pump. Heat more water while the sun is shining, it's an efficient power store if the HWS is insulated well.
We also bought a cheap IKEA induction to use instead of gas where we can.