People look for licensed, insured electricians before letting one into the house. Without a site there is nowhere to show the license number or the reviews in one place.
License and insurance up front, the services they actually do (panels, EV chargers, rewires) and a quote form.
Search a city, and MapsProspector lists every electrician on the map without a website — scored 1–10, with the phone number, the owner's first name when they sign their review replies, and a pitch written from their own listing.