As someone who lives where natural gas isn't available, virtually everyone here had either EBBs or an oil furnace. A heat pump uses as little as 1/4 the electricity but uses more as you get into lower temps. A heat pump remains more efficient than EBBs down to around -25C. Heating oil is more expensive than EBBs, so very expensive compared to the electricity needed for a heat pump, and switching is a 'no brainer'.

So far, 35% of households in my province have installed heat pumps, most keeping their EBBs or oil furnace as a backup. Every home that switches from EBBS is cutting their heating electricity usage by 50% (annually), freeing up electricity for the homes switching from oil furnaces to use for their heat pumps so our grid isn't being overloaded.