Graphic of the week | Ember

Graphic of the week

Discover a new graphic on the global clean energy transition every Monday.

Last updated: 1 June 2026

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Navigating power system planning in the EU

Everything in the power system is connected – except how it is planned. How else would you explain the tangled web of processes used by EU countries to plan their future power systems, than as a tube map?

Published: 23 September 2025

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A screenshot of Ember's depiction of the EU's power system planning framework, as a metro map

Coal is dirtier than you think

Burning coal for energy is the single largest contributor to global warming, accounting for 41% of global carbon dioxide emissions.

But there is one fact about coal that receives very little attention: coal mines are a major source of methane.

 

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