Fuel protests erupted across Northern Ireland and the Republic of Ireland in early 2026, with hauliers and contractors blocking fuel depots and key arterial routes in response to sustained diesel price increases driven by carbon tax escalations and broader energy market volatility. In the Republic, the carbon tax on auto-diesel rose again in October 2025 as part of Budget 2026, pushing pump prices for commercial diesel above €1.80 per litre in many areas — a figure that Construction Industry Federation Ireland (CIF) flagged as "critically unsustainable" for plant-heavy civil contractors. In Northern Ireland, hauliers coordinated blockades at distribution points including the Belfast area, echoing the 2000 fuel crisis playbook but with a harder edge: contractors are already operating on razor-thin margins after years of inflation-linked contract disputes. The result has been delivery delays, plant downtime, and material supply disruption hitting active sites on both sides of the border simultaneously. --- If you're running a site in Antrim, Cork, or anywhere in between right now, this isn't a news story — it's a programme management problem landing on your desk this week. Delayed fuel deliveries mean plant sitting idle, concrete pours being rescheduled, and prelim costs climbing on fixed-price contracts that were already under strain. For procurement leads and QSs, the knock-on effect on haulage rates for materials — aggregates, steel, precast — could push already volatile supply chain costs further beyond the contingencies priced into tenders submitted six months ago.