Electrification cuts global energy demand by 40% as Europe's power bill stays high

The claim is simple, and uncomfortable for anyone who equates growth in computing and transport with growth in energy use. Electrify what can be electrified, run the rest on hydrogen, and global final energy demand falls from 416 to 247 exajoules, a drop of about 40%. Ritchie writes this in her Substack newsletter By the Numbers, citing work by Oxford professor Nick Eyre.

Electricity demand itself rises, from 110 to 189 EJ. The saving comes from deleting the waste in combustion. A petrol car turns about 20% of its energy into motion, an electric one around 80%.

Ritchie's model is deliberately crude. It assumes no efficiency gains beyond switching fuels, ignores growth in developing economies, and hands every non-electrified sector to hydrogen. She says those simplifications probably understate the reduction. Buildings are almost fully electrified in the scenario: 90% of space heating moves to heat pumps, and 10% is left to hydrogen for winter peaks. Road transport and short-haul aviation go electric; long-haul shipping and medium- and long-haul flights do not. High-temperature industrial processes stay hard to convert, and the steel industry only moves from about 25% to 50% electric arc furnaces.

Europe's problem is not the arithmetic

The arithmetic lands in a European debate shaped by prices, not physics. Recent coverage collected by energynow.com, Dow Jones and the European Union Institute for Security Studies describes a bloc pushing electrification while gas and diesel costs remain a burden on industry. Analysts warn that the transition decade will be painful before it is cheap. None of that contradicts Ritchie's numbers. It does mean the savings arrive after the investment, not before it.

One place where the investment is already visible is computing. On 29 September Efficient Computer said it had raised a $97 million Series B round led by TQ Ventures, bringing its total raise to $173 million at a $650 million valuation. In a company blog post, CEO Brandon Lucia said the firm's processors deliver 10 to 100 times better energy efficiency than traditional CPU architectures. Its Electron E1 chip, he said, is launching at volume for embedded physical AI systems, meaning robots, drones, infrastructure and wearables.

Lucia's argument is that narrow AI accelerators trade adaptability for speed, and that the unaccelerated part of any workload caps the gains. He invokes Amdahl's Law: if 90% of a computation runs on a perfect accelerator, the system can still only improve tenfold, because the remaining 10% stays inefficient.

That matters for data centres, which are now the fastest-moving energy story in Canada. On 29 September CBC News reported that companies have approached Newfoundland and Labrador's government about building AI data centres. Energy and Mines Minister Lloyd Parrott said the province's door is "open for business" during a mid-September debate on the Churchill Falls agreement.

"Does it make sense to be giving that electricity over to data centres when there might be better ways that it can be used?" tech journalist Paris Marx told CBC.

TechNL CEO Andrea King told the same outlet that Labrador has the low-carbon hydro power, cold weather and land that data centre developers want, but that opportunity cost still has to be weighed. CBC notes Meta's planned Sturgeon County data centre in Alberta is expected to cost $13 billion and come online in two to three years.

Money moves toward the barrel

Where the money goes when prices spike is the question two economists tackled for The Conversation on 29 September. Federal data cited in the piece puts the main US crude hub at $66 a barrel in late February 2026 and $101 a barrel on 13 April, after US and Israeli attacks on Iran closed the Strait of Hormuz.

Their answer: most of the windfall ends up with oil producers. Saudi Arabia's government, which owns nearly all production there, captures the gain directly. West Texas operators get a short-run windfall that flows to shareholders through dividends, debt reduction and buybacks. Norway channels revenue into its Government Pension Fund Global, valued at over $2 trillion, while Russian crude can only use Western shipping, insurance and financing below $60 a barrel.

For European industry the implication is narrow but real. Electrification lowers the amount of energy an economy needs, but it does not lower the bill until the capital is spent. Data centres, grids and factories are all competing for that capital at the same time.