The geopolitical rationale for doing so overlaps with the imperative to tackle climate change. The Intergovernmental Panel on Climate Change’s latest report on mitigation underscores the urgency of that task. Total greenhouse-gas emissions must peak by 2025 if we are to avoid a catastrophic increase in global temperatures. Moreover, the economy-wide shift to clean energy must be managed carefully to account for the inevitable social and economic consequences; it must be a „just transition“.