UK Manufacturing Energy Costs Soar: Iran War Survival Guide

The numbers are stark: UK manufacturing energy costs are surging at rates not seen since Black Wednesday in September 1992. The S&P Global Purchasing Managers Index shows a cost index jump of 14 points in March alone. Fuel, transport, and energy-intensive raw material prices have soared in the wake of the US-Israel war on Iran.

This is not a temporary blip. The closure of the Strait of Hormuz has disrupted 20% of global oil supplies and major liquefied natural gas volumes. Brent crude has surged past $126 per barrel at peak. Oil is up nearly 50% since hostilities began on 28 February. UK gas prices have soared after major shutdowns at Qatari LNG terminals.

For UK manufacturers already paying the highest industrial electricity prices in the G7, this crisis demands action now. Here is what you need to know, and what you can do about it.

The Scale of the Crisis

Energy Cost Projections

Energy consultancy Cornwall Insight projects electricity cost increases of 10-30% for businesses. Gas could rise 25-80%. Unlike households protected by the energy price cap, businesses face direct exposure to wholesale market swings.

For a typical small to medium manufacturer, Cornwall Insight estimates:

• Electricity: Average 12-month contracts rising to £578,000, up £95,000 from early last month
• Gas: Bills could increase by £376,000 to just over £1 million per year

These figures pose existential threats for many operations. Energy cost reduction UK manufacturers pursue now will determine survival.

The Broader Economic Picture

The OECD has given the UK its biggest growth downgrade. It cut 2026 forecasts by half a percentage point to just 0.7%. The Bank of England has paused interest rate cuts. Markets now price in potential hikes rather than cuts. UK inflation, once expected to fall towards 2%, is now forecast to breach 5% through 2026.

Morgan Stanley has warned of a “pronounced UK recession” if energy prices stay high. The composite PMI has fallen from 53.7 in February to just 51 in March. Growth has “slowed to a crawl.”

The Structural Disadvantage

This crisis lands on UK manufacturers who already compete with one arm tied behind their backs. Before the Iran war, industrial power prices in the UK were:

• Four times higher than in the United States
• 46% above the global average
• Highest in the European continent

Even with the British Industrial Supercharger scheme, UK energy-intensive industries paid £66/MWh in 2024/25. Germany paid £50/MWh. France paid £43/MWh.

The new British Industrial Competitiveness Scheme (BICS) promises bill savings of up to 25% for 7,000 firms. But it starts in April 2027. Make UK is pressing government to bring this forward and extend it to all manufacturers. The wheels are turning slowly while businesses bleed cash.

Supply Chain Disruption

Energy is not the only pressure point. The Iran war manufacturing impact extends across supply chains. Around a quarter of UK manufacturers reported longer delivery times in March. Shipping is being rerouted from Asia via the Cape of Good Hope. This avoids the disrupted Strait of Hormuz and heightened Houthi activity in the Bab al-Mandab Strait.

Fitch has warned of production cuts and force majeure declarations. This affects:

• Chemical feedstocks
• Fertiliser inputs
• Specialist plastics and polymers
• Electronic components

For a deeper look at how trade disruption affects UK SMEs, see our analysis on how Trump’s trade tariffs are affecting UK SME manufacturing.

Immediate Actions: Energy Procurement

Review Your Contract Timing

About a third of UK businesses renew energy contracts at the start of April to align with the tax year. The timing could not be worse. Markets sit at elevated levels with extreme volatility.

Adam Berman, director of policy at EnergyUK, describes the current market: “Liquidity is already affected. The ability of suppliers to offer long contracts is drying up. Prices change by the hour. There are cases of an offer being made in the morning and withdrawn by lunchtime.”

Consider Shorter-Term Contracts

Some business customers are signing three-month deals where they might normally opt for a year. This adds admin burden. It carries risk if prices rise further. But it avoids locking in at what may prove to be peak prices.

The key question: how long will the conflict last? Will energy infrastructure damage keep prices high even after a ceasefire?

Evaluate Flexible Purchasing

For higher-consumption manufacturers, flexible (flex) contracts allow energy purchasing in staged tranches rather than all at once. This reduces “single day” risk, where one market moment sets your entire cost base.

A flex strategy should include:

• Clear schedule for market reviews
• Planned purchasing frequency across the contract term
• Defined risk position and decision-making authority
• Pre-agreed triggers for faster purchases if prices fall

Flex is not about timing the market. It is about reducing regret risk through discipline.

Understand Your Current Exposure

If you have a fixed contract, know when it expires and what renewal terms are likely. If you are on a variable or pass-through arrangement, you are already feeling the pain. Assess hedging options urgently.

Medium-Term Actions: Efficiency and Generation

Conduct an Energy Audit

Before investing in new equipment, understand where energy is actually being consumed. For background on why this matters, our UK manufacturing energy crisis survival guide covers the fundamentals.

Common findings in manufacturing energy audits include:

• Compressed air system leaks (often 20-30% of compressor output)
• Lighting running in unoccupied areas
• HVAC systems fighting each other
• Motors and drives running below peak efficiency
• Process heat being wasted rather than recovered

Many efficiency gains require minimal capital but deliver instant bill cuts. Studies show idle machine energy waste costs UK manufacturers £408M annually.

Speed Up Efficiency Investments

Higher energy prices have shortened payback periods. Investments that looked marginal six months ago may now offer strong returns:

• Variable speed drives on motors
• LED lighting upgrades
• Heat recovery systems
• Building management system tuning
• Insulation improvements

Calculate payback based on current elevated prices. But stress-test against scenarios where prices fall. You want investments that work across a range of futures.

Evaluate On-Site Generation

Solar panel economics for factories have improved sharply as grid prices have risen. Well-designed industrial solar now offers payback under five years. System lifetimes run 20-25 years.

Battery storage adds further value by enabling:

• Peak shaving (avoiding highest-cost periods)
• Demand charge reduction
• Backup power resilience
• Revenue from grid services

Lead times for solar and battery installations can run 6-12 months. Decisions made now will not deliver instant relief. But they will protect against future volatility.

Access Government Support

The Made Smarter Innovation Sustainability Accelerator helps UK manufacturers adopt digital solutions for resource and energy efficiency. Innovate UK has committed £4 million to speed adoption.

Check if you qualify for:

• Made Smarter regional adoption programmes
• Enhanced Capital Allowances for energy-efficient equipment
• Super-deduction allowances where still available
• Local Enterprise Partnership grants
• Catapult centre support

Strategic Actions: Supply Chain Resilience

Map Your Exposure

Identify which suppliers and inputs face the most Middle East disruption:

• Energy-intensive materials (steel, aluminium, glass, chemicals)
• Components shipped through affected routes
• Materials sourced from Gulf states
• Suppliers who may face their own financial distress

Build Buffer Stock Where Feasible

For critical inputs with long replacement lead times, consider higher safety stock levels. The cost of extra inventory may be less than the cost of production stoppages.

Develop Alternative Suppliers

Diversification takes time but cuts concentration risk. Begin qualifying alternative suppliers now, even if you do not shift volumes yet.

Review Contract Terms

Understand your exposure to price escalation clauses and force majeure provisions. This applies to contracts with your suppliers and with your customers. You may need to pass through higher costs or renegotiate terms.

Financial Resilience

Model Cash Flow Scenarios

Energy cost increases of 30-80% will strain working capital. Model scenarios across a range of price assumptions and conflict lengths:

• Three-month disruption with gradual recovery
• Six months of elevated prices with partial recovery
• Twelve months or more of structural price increase

Review Financing Options

The New Economics Foundation has called for temporary, government-backed loans for SMEs to absorb cash-flow shocks. While no such scheme exists yet, commercial facilities may be available:

• Invoice financing to speed up receivables
• Asset-based lending against equipment
• Supply chain finance programmes
• Energy-specific financing for efficiency investments

Communicate with Stakeholders

Customers, suppliers, lenders, and employees all have a stake in your resilience. Transparent communication about challenges and mitigation actions builds confidence. It may unlock flexibility (extended payment terms, price adjustments, workforce scheduling) that eases pressure.

What Government Must Do

Make UK chief executive Stephen Phipson CBE has been blunt: “The recent developments in the Middle East add huge pressures to the sector and risk accelerating de-industrialisation. Whilst manufacturers are leading the way in renewable energy we must ensure the sector survives in the medium term.”

Manufacturers should press for:

• Faster BICS rollout: The April 2027 timeline for the British Industrial Competitiveness Scheme is too slow. Support is needed in 2026, not 2027.
• Broader eligibility: The current 7,000 company scope leaves too many manufacturers exposed.
• Progress on domestic energy security: The Rosebank and Jackdaw developments would help diversify supply and cut import dependency.
• Emergency bridging support: Targeted loans or grants for manufacturers facing immediate cash flow crises.

Looking Beyond the Crisis

However long this conflict lasts, its lessons are clear. UK manufacturing has operated with unacceptable energy cost disadvantages for too long. Every crisis exposes that vulnerability afresh.

The manufacturers who emerge strongest will be those who treat this shock not merely as a cost to absorb but as a catalyst for structural improvement. Invest in efficiency. Diversify supply. Build financial resilience. Cut energy intensity. Generate your own power where feasible.

83% of manufacturers intend to invest in renewables, according to Make UK. The question is whether they can survive long enough to realise those plans.

The government must act faster. But manufacturers cannot wait for government. The actions you take in the next 90 days may determine whether your business still operates in 2027.

Key Takeaways

1. UK manufacturing energy costs are the immediate threat: Expect electricity increases of 10-30% and gas increases of 25-80% for businesses renewing contracts.

2. Review procurement strategy urgently: Consider shorter contracts, flexible purchasing, or staged approaches rather than locking in at peak prices.

3. Speed up efficiency investments: Payback periods have shortened sharply. Conduct an energy audit and prioritise quick wins.

4. Evaluate on-site generation: Solar and battery economics have improved, though lead times mean acting now.

5. Map and mitigate supply chain exposure: Identify vulnerable inputs and develop backup plans.

6. Model cash flow scenarios: Prepare for sustained high costs and secure financing before you need it.

7. Press government for faster action: BICS acceleration and expanded support are essential to prevent de-industrialisation.

The biggest cost surge since 1992 demands the most decisive response since then. The time to act is now.