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Best Utilities & Energy in Co. Derry

Businesses listed in this area — updated 25 October 2026

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.

Best utilities & energy by town

Catalyst Coleraine Londonderry

Best utilities & energy in Derry — FAQs

What is the best utilities & energy in Derry?

We rank utilities & energy in Co. Derry by customer rating. None has enough ratings yet — be the first to review one and help others find the best.

How are the best utilities & energy in Derry ranked?

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.

How can my utilities & energy business rank higher in Derry?

Encourage happy customers to leave a review on your LocallyIrish.ie listing. More high-star reviews move you up the "Best of" ranking for Co. Derry.

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