All articles by Isabeau van Halm

Isabeau van Halm is a data journalist based in London. She has previously worked as editor of a local newspaper and is a graduate of the Erasmus Mundus Journalism Master’s. Contact Isabeau at: isabeau.vanhalm [at]

Isabeau van Halm


Big Oil profits soared to nearly $200bn in 2022

The combined profits of some of the world’s biggest oil companies – Chevron, ExxonMobil, BP, Shell and TotalEnergies – amounted to nearly $200bn in 2022.

Windfall tax could raise less than expected and set back renewable investments

The UK windfall tax could raise less than the expected £5bn and the investment loophole may even set back climate efforts.

How can the EU end its dependence on Russian gas?

The European Commission, International Energy Agency and several think tanks have all published scenarios on weaning the EU off Russian gas, but what is the bottom line?