Top rated

Best Utilities & Energy in Belfast

Ranked by Google ratings — updated 26 October 2026

As of 26 October 2026, LocallyIrish.ie ranks 18 utilities & energy in Belfast, Co. Antrim by customer rating. The top-rated is Belfast Boiler Installations, with 4.9 stars from 236 Google ratings. Barclay Communications follows with 4.7 from 490 Google ratings.

How we rank

Each business is scored on its average rating weighted by how many ratings it has, so a handful of perfect scores cannot outrank hundreds of near-perfect ones. Reviews left on LocallyIrish.ie and the business's Google rating are counted together; the rating shown on each entry is labelled with its source. A Google rating needs at least 5 ratings to count. Businesses without enough ratings are listed separately, unranked. Paid listings cannot buy a higher position. The list refreshes hourly.

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Best Utilities & Energy in Belfast

Belfast Boiler Installations

Barclay Communications

Select Comms Limited

Nicholl Fuel Oils

Clarity Telecom

Standard Utilities Limited

Mutual Energy

Union Green Power

Air Products

Cabletel Northern Ireland Ltd

Beggs and Partners Belfast

Calor Gas Northern Ireland Ltd

Radius Connect Solutions Northern Ireland

Phoenix Energy

NIE Networks

Flogas

Electric Ireland NI

SSE Airtricity

Also in Belfast — not enough ratings to rank yet

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