By 2030, the global oil industry will consume roughly a quarter of the energy it produces simply to keep producing. By 2050, that figure approaches half. The fossil fuel system is eating itself – and the Iran war has exposed what thermodynamics had already decided.
Every energy source requires energy to produce. Oil must be drilled, pumped, refined and transported – and all of that consumes energy. The critical measure is how much usable energy you get back for each unit you put in.
In the 1960s, the global oil industry got roughly 44 units back for every one it spent. Since then, that ratio has roughly halved – and a study in Nature Energy found that once you account for the full refining and supply chain, the return is as low as 6:1 and falling.
The oil industry is spending ever more energy to deliver ever less. The shocks of 2008, 2022 and 2026 are symptoms of this deepening inefficiency. Each crisis arrives sooner, hits harder, and costs more to absorb – because the energy physics beneath the global economy are deteriorating on a curve no ceasefire can reverse.
The demand destruction now under way will prove permanent. The IEA projected before the war that demand for combustible fossil fuels would peak as early as 2027, with Chinese oil consumption – 60% of global demand growth over the past decade – already cresting. The US shale boom, which accounted for 90% of global oil supply growth since 2015, is ending: the EIA projects output peaking around 2027. The IEA finds that nearly 90% of upstream investment since 2019 has gone to offsetting decline in existing fields. The industry is running to stand still.
By the time damaged Gulf infrastructure is rebuilt in three to five years, the world will have moved on. Every heat pump installed, every electric vehicle charged from domestic renewables, every factory that electrifies its processes is a permanent subtraction from oil and gas demand. None of it returns when the strait reopens.
The standard remedies cannot deliver in time. North Sea licensing-to-production runs five to ten years; Shell and BP are divesting billions from the basin because capital markets have priced this reality. LNG diversification preserves structural price exposure – as Qatar’s force majeure demonstrated.
And every buffer that absorbed the 2022 shock – government borrowing capacity, central bank room to ease, household savings – is simultaneously depleted. The Bank of England cannot cut rates while inflation accelerates; it cannot raise them without deepening the recession. Both instruments that softened 2022 are disabled at once. Households absorb the full cost.
In a new report for Earth4All, my co-authors – a former senior Shell executive, the co-founder of Europe’s largest solar energy company (now Lightsource BP), a leading energy financier from Alexa Capital, and Sandrine Dixson-Declève, former advisor to the King on climate and sustainability – and I set out a new doctrine we call electrified sovereignty. We find that the fossil fuel era is ending on its own terms, whether governments act or not. The question is whether Britain and Europe capture what comes next.
Solar costs have fallen more than 80% since 2010, batteries almost 90%. Clean energy sources now return significantly more energy per unit invested than oil. The IEA confirmed in February 2026 that fully renewable firm power – guaranteed round-the-clock electricity without fossil backup – is technically achievable and economically competitive. The reliability objection is settled.
Modelling by RethinkX identifies an optimal UK clean power system generating a huge surplus, eight to 14 times current electricity output, at a capital cost of $747 per capita per year over 20 years – comparable to current energy expenditure and a fraction of the cumulative cost of repeated crises. The UK Government spent more than £100 billion on energy support in 2022–2024 alone. Building the replacement costs less than one crisis – and delivers a permanent productive asset.
Picture the Europe that emerges. Electricity so cheap and abundant it becomes the foundation of a new industrial economy: hydrogen to replace natural gas, synthetic fuels for aircraft and ships, fertilisers to replace those the war has cut off, clean steel, and power for the data centres the digital economy demands. A UK-European interconnected supergrid sharing surplus generation across borders, with energy costs determined by domestic investment rather than commodity prices set in contested markets. Industrial revitalisation built on the cheapest electricity in history – rather than managed deindustrialisation driven by the most expensive gas.
This is feasible. The wind turbine supply chain is already strategically sovereign – Siemens Gamesa and Vestas hold roughly 40% of the global offshore wind market. The UK sits on one of the richest wind resources on Earth, with roughly 3% deployed of what is technically available. UK pension funds manage more than £2.5 trillion – yet remain systematically underweight in domestic clean energy while holding massive fossil fuel exposure. British savers are financing the system that is making British households poorer.
By the time the Gulf is rebuilt, the countries that moved fastest will have energy systems that no longer care. Britain should be among them.
