Northern Ireland Gas Prices Just Shifted Again
Northern Ireland gas prices spark fresh concerns
As of May 10, 2026, average unleaded petrol prices in Northern Ireland stand at 153.3p per litre across 301 stations, with the cheapest at 125.9p in County Down, while diesel averages 177.5p per litre and the lowest is 133.9p in Londonderry; meanwhile, domestic natural gas tariffs have seen reductions effective April 1, 2026, with Firmus Energy cutting 10.1% (£94/year savings) in Ten Towns and SSE Airtricity reducing 8.1% (£80/year), though recent Middle East conflict-driven wholesale volatility raises alarms for future hikes.
Current Petrol and Diesel Prices
Petrol and diesel, commonly referred to as "gas" in everyday queries, dominate searches for Northern Ireland gas prices. Updated data from Fuel Map UK shows county-level variations reflecting local competition and supply chains.
The average unleaded price of 153.3p per litre marks a sharp 19% rise since late February 2026, coinciding with the Iran conflict's onset, pushing a 50-litre tank to £75 from £63.
| County | Stations | Avg Unleaded | Cheapest Unleaded | Avg Diesel | Cheapest Diesel |
|---|---|---|---|---|---|
| Antrim | 103 | 153.5p | 144.9p | 178.4p | 172.9p |
| Armagh | 39 | 152.9p | 126.9p | 176.1p | 135.9p |
| Down | 64 | 153.0p | 125.9p | 178.5p | 146.9p |
| Fermanagh | 13 | 155.0p | 149.7p | 178.5p | 173.7p |
| Londonderry | 39 | 152.7p | 140.9p | 175.4p | 133.9p |
| Tyrone | 43 | 153.5p | 134.9p | 176.7p | 144.9p |
- Belfast averages 153.4p for unleaded, ranging 149.9p-159.9p across 80 stations.
- Diesel surges 35% since February, averaging 177.5p regionally.
- Rural-urban parity exists, with over 100 stations charging up to 180p-210p in affected areas.
Domestic Natural Gas Tariffs
Regulated natural gas tariffs cover Greater Belfast/West (SSE Airtricity) and Ten Towns (Firmus Energy), serving 215,000 and 74,725 customers respectively. Recent Utility Regulator reviews delivered cuts amid falling wholesale costs, but pre-conflict timing leaves vulnerability.
Firmus Energy's 10.1% drop from April 1, 2026, saves £94 annually on 12,000 kWh usage, marking their seventh consecutive reduction totaling 27% since April 2025 (£300 savings).
"Our analysis has resulted in a 10.1%, or £94 per year, decrease... due to a fall in wholesale gas costs and an over-recovery being returned to customers." - Colin Broomfield, Utility Regulator Director of Markets, March 3, 2026.
Recent Changes and Trends
- April 2025: Firmus cuts 11.84% (£136/year), SSE holds steady.
- October 2025: Firmus reduces 7.86%.
- April 2026: Firmus 10.1% down, SSE 8.1% down, yielding NI totals £1,870-£1,934 vs GB £1,932 and Ireland £2,724.
- May 2026: Fuel prices spike post-Iran war, wholesale gas volatile at 3.58c/kWh average.
Historical context: Gas prices peaked post-2022 crisis but halved by 2025 via regulation; 2026 volatility revives 2022 fears, with NI leading UK rises at 19% petrol/35% diesel.
Why Concerns Are Mounting
Fresh worries stem from the Middle East conflict, inflating global wholesale gas post-April cuts. Utility Regulator notes sharp rises in recent days, projecting ongoing volatility.
Consumer Council NI warns average households face £75 petrol/£91 diesel tank fills, up 19-35%; business gas at 4.73p/kWh average adds £171M annual spend across 94,450 sites.
"We expect that wholesale gas prices will remain volatile while the conflict continues." - Utility Regulator, March 2026.
Price Comparison Table
NI regulated tariffs undercut neighbors post-April 2026, based on standard 3,200 kWh electricity/12,000 kWh gas usage.
| Supplier Combo | Electricity | Gas | Total |
|---|---|---|---|
| Power NI + Firmus (Ten Towns) | £1,029 | £841 | £1,870 |
| Power NI + SSE (Belfast/West) | £1,029 | £905 | £1,934 |
| Great Britain (Price Cap) | £1,073 | £859 | £1,932 |
| Ireland | £1,309 | £1,415 | £2,724 |
Factors Driving Prices
- Wholesale volatility: Fell pre-April (over-recovery), now rising 30%+ from conflict.
- Geopolitical tensions: Iran war boosts imports 16-30% UK-wide, NI hardest hit.
- Regulation: Utility Regulator caps tariffs biannually, returning over-recoveries.
- Local supply: Separate networks (Firmus/SSE) yield tailored cuts but expose to NI-Ireland differentials.
Outlook and Tips
With May 2026 wholesale at 3.58c/kWh down 7% monthly but volatile, expect tariff reviews by October; drivers save via apps like Fuel Finder.
Shop counties like Down/Armagh for 125.9p petrol; households lock fixed tariffs pre-hikes. Regulation shields NI, but conflict adds £40-£78 yearly risks if unchecked.
Historical peaks (2022) inform caution: Track Utility Regulator announcements for Q3 2026 reviews amid 94,450 businesses' £171M gas spend.
Everything you need to know about Northern Ireland Gas Prices Just Shifted Again
What are the cheapest fuel stations in Northern Ireland?
Lowest unleaded at 125.9p in Down, 126.9p in Armagh; diesel cheapest 133.9p Londonderry, 135.9p Armagh-check Fuel Finder for real-time via 384 stations statewide.
How have gas tariffs changed in 2026?
Firmus: 10.1% cut April 1 (£94/year); SSE: 8.1% cut (£80/year), following 2025's 11.84% and 7.86% drops-total 27% since last year. Why are fuel prices rising now? Middle East conflict since late February 2026 spiked petrol 19%, diesel 35% in NI, outpacing UK averages amid global wholesale surges.
Are NI energy bills cheaper than GB or Ireland?
Yes, post-April: NI £1,870-£1,934 total vs GB £1,932, Ireland £2,724-electricity/gas combo advantage holds despite volatility.
What help is available for high bills?
Contact suppliers first; free advice from Consumer Council NI, Advice NI, MoneyHelper. Use price comparison tools at consumercouncil.org.uk.