The energy transition, three times a week

Understand the issues through data.

A short brief on what changed in power, emissions and the grid — with the chart, the source and the link. Published Monday, Wednesday and Friday.

Chart in focus

Share of electricity production by source

Power Mix

What each country actually generates its electricity from, back to 1900. Other renewables include geothermal, wave and tidal.

Power Mix · Annual · 1900–2025 · % of generation
What each country actually generates its electricity from, back to 1900. Other renewables include geothermal, wave and tidal. · Source: Our World in Data, Share of electricity production by source · CC BY 4.0 · Get the data

Changes every three days — next on 10 Sept 2026

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Briefings

What we're reading, and what we make of it

Curated reporting and research from across the beats, each with our own read on it.

Carbon LedgerReport

Global Methane Tracker 2026

International Energy Agency (IEA)04 May 2026

The IEA have now published some version of the same sentence for years: more than 35 million tonnes of methane could be captured at no net cost, because the gas…

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Power MixReport

Electricity Mid-Year Update 2026

International Energy Agency (IEA)23 Jul 2026

The headline pairing here does the work: renewables growing more than 8 percent, and power-sector emissions still rising about 1 percent. Both are true, and the gap between them is…

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Browse by beat: Grid & AIPower MixCarbon Ledger

Elsewhere

What we're reading

Links to other publications, not our own writing. Every headline below belongs to the outlet named beside it and opens on their site.

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What changed in power, emissions and the grid — with the chart, the source and the link.

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