There's reason to think otherwise: Natural Gas is being replaced and is due to see price increases. It will likely be replaced by electricity (namely Heat-Pump HVAC systems, and induction cook tops).

In some states some developments aren't even hooked to the gas network, and the homes standards are such that electrification is the default.

You have to measure electricity demand over years, not months, because seasonal changes and or weather can really corrupt your data.