Dublin has by far the largest concentration of electrical contractors in the country, from one-van domestic electricians to firms that wire apartment blocks and data centres. For a household job the practical questions are whether the contractor is registered with Safe Electric (mandatory for restricted works such as a new fuse board or rewiring) and whether it actually covers your part of the city: many list the postal districts or the Northside/Southside they serve. EV charger and solar PV installations are now the most common reason Dubliners call an electrician; SEAI grants for both require a registered installer.