Westminster has shifted into contingency mode. Scenarios are being run, language is careful, and one question looms over every discussion: how long does the Iran conflict last? No one can model the duration with confidence, so ministers are preparing for swings in energy prices and sentiment rather than betting on a single path.

Later today, 24 March 2026, Chancellor Rachel Reeves will update the Commons on the domestic economic impact. According to BBC reporting, her statement is expected to cover three broad areas: a short assessment of how the conflict is feeding through to the UK economy, plans to shore up energy security, and a framework to deal with any opportunistic pricing if markets lurch again.

On energy security, the signal is acceleration. Ministers want new nuclear capacity moving faster, with enabling legislation trailed for later in 2026 and expected to be set out in the King’s Speech in May, per the BBC. The direction of travel is clear: add firm, low‑carbon baseload so that future gas price spikes do less damage at home.

Price behaviour is also under the microscope. The Treasury is preparing what’s been described to the BBC as a new anti‑profiteering framework-time‑limited, targeted powers for the Competition and Markets Authority to act where companies are shown to be exploiting sharp price rises. The intent is to deter ‘rip‑off’ practices without freezing competition or second‑guessing normal margin moves.

Support for households, if needed, will be more precise than in past crises. With Ofgem’s price cap on gas and electricity in place until 30 June, ministers have a short window to judge whether an additional package is warranted. Reeves has signalled that blanket help for every household would likely be neither fair nor affordable, pointing instead to targeted relief if bills spiral.

The fiscal backdrop explains the caution. Universal energy support under Liz Truss, layered on top of pandemic programmes, left a lasting imprint on the public finances. Roughly £1 in every £10 of government spending now goes on debt interest, squeezing room for large, open‑ended interventions and pushing the Treasury to prioritise measures with clear, temporary triggers.

Expect a renewed push on clean power alongside nuclear. Ministers have talked up going hard on renewables to cut the UK’s reliance on volatile imported gas. The politics of domestic supply remain live: Conservatives, Reform UK and some Labour MPs want fresh North Sea drilling, while Energy Secretary Ed Miliband argues extra licences would not materially lower UK prices because gas is traded on global markets.

Miliband is also promoting quick‑win kit: plug‑in solar panels. As briefed to the BBC, these balcony or garden systems-costing a few hundred pounds-are due to hit UK supermarkets later this year. Germany’s rapid take‑up and Spain’s reduced gas exposure are the case studies officials cite to show how small, distributed solutions can chip away at bills.

For households and SMEs, the near‑term playbook is practical. Check contract end‑dates, review direct debits, and stress‑test cashflow for a few months of higher unit costs. If capital allows, modest efficiency upgrades with two‑to‑three‑year paybacks become more attractive in periods of volatility than in calm markets.

What matters next is sequencing. Today’s Commons update sets the tone; May’s King’s Speech should clarify the nuclear legislation path; and the Ofgem cap runs through June, giving time to calibrate any targeted support. Markets will judge the credibility-watch oil, European gas and UK gilt yields for the read‑across to inflation and the debt interest line.