A breakthrough in solid-state battery technology or green hydrogen cost collapse resets the economics of the entire system, invalidating most existing transition roadmaps.

Renewables scale faster than anyone forecast. Policy tailwinds, falling costs, and industrial electrification drive a near-complete grid transformation ahead of schedule.

Political resistance, energy security fears, and underestimated transition costs slow the shift. Fossil infrastructure gets extended. New LNG capacity is built across Southern Europe.

The transition proceeds but fractures along national lines. Northern Europe races ahead. Southern and Eastern Europe lag behind. Internal EU energy market coherence breaks down.