The oil crisis triggered by the Iran war has changed the fossil fuel industry for ever, turning countries away from fossil fuels to secure energy supplies, the world’s leading energy economist said.

Fatih Birol, the executive director of the International Energy Agency (IEA), also said that, despite pressure, the UK should forgo much of its potential North Sea expansion.

Speaking exclusively to the Guardian, Birol said a key effect of the US-Israel war on Iran was that countries would lose trust in fossil fuels and demand for them would reduce.

“Their perception of risk and reliability will change. Governments will review their energy strategies. There will be a significant boost to renewables and nuclear power and a further shift towards a more electrified future,” he said. “And this will cut into the main markets for oil.”

Birol said there was no going back from the crisis: “The vase is broken, the damage is done – it will be very difficult to put the pieces back together. This will have permanent consequences for the global energy markets for years to come.”

Oops.