A post from someone who remembers having one
Our house when I was growing up had two meters, one was for the electric water heater. The one for the water heater used a timer so it only ran during non-peak periods for a lower rate (this was in the 1950s, by the way, so off peak electrical setups aren't anything new.)
Our house when I was growing up had two meters, one was for the electric water heater. The one for the water heater used a timer so it only ran during non-peak periods for a lower rate (this was in the 1950s, by the way, so off peak electrical setups aren't anything new.)