Sixty-three firms, weighted toward limited companies (28 of 35 known) over sole traders (7). Electrical installation (15) and maintenance (10) form the core; alongside sit a renewables cluster — solar PV (9), EV chargers (9), heat pumps (7), electric heating (10) — and 12 firms that cross into plumbing. Seven hold NICEIC approval; 13 belong to GBTEA. —
Twenty-nine electricians on the island — weighted hard toward low-carbon retrofit: EV chargers, solar PV, and heat pumps.
Sixteen firms installing solar PV and battery storage — most arrive via plumbing and heating rather than electrical contracting.
Twelve security installers: three pure-security operators, three M&E contractors, two AV firms, two aerial specialists, locks and gates.
Five of Guernsey's 62 electricians cover EV chargers — two installers and three trade wholesalers stocking Hydra, Tesla, and SolarEdge kit.
Six aerial and satellite installers — four in St Peter Port, two specialising in MATV/SMATV systems for multi-dwelling reception.
Four firms doing structured data cabling — a smart-home installer, a satellite specialist, an electrician, and an Alderney computer shop.
Three firms — none of them fire-only specialists: G4S (50+ years on the island), RefCo's M&E division (1998), Fire Guard sprinklers (2020).
Three firms — two NICEIC electrical contractors offering lighting design, and a dedicated lighting wholesaler trading since 1981.
One firm per niche, picked for editorial depth.
Electrical contractor — installations, lighting, automation, renewables
Plumbing & heating: renovations, emergencies, boiler installs
Satellite and aerial installation; home cinema and automation systems.
Renewable energy installers — solar, batteries, EV chargers, heat pumps.
Satellite, aerial & Wi-Fi mesh installer — Sky Q, Freeview, Freesat, IRS systems
Smart home and office technology installers — lighting, AV, heating, networks.
SSAIB certified & REFCOM accredited M&E contractor — high-end HVAC, BMS, and security systems
Electrical contractor — installations, EICR, solar, fire, EV charging
Oldest energy centre, established 1830 — largest range of home appliances, smart home tech, and AV.
Tagged in Electricians but not in one of the specific niches above.