In a speech at Norges Bank’s Climate Conference in Oslo, European Central Bank President Christine Lagarde argued that Europe’s energy shock exposed imported fossil-fuel dependence as a strategic and macroeconomic vulnerability and that scaling locally produced clean energy is the only route to reconcile energy security, sustainability and affordability. She linked high and volatile energy prices to the euro area’s inflation surge and to a lasting hit to European competitiveness, and set out conditions she sees as necessary to mobilise the investment required for a renewables-based system. Lagarde cited euro area energy inflation peaking at 37% in 2022, pushing headline inflation to 8.4%, and noted that EU electricity prices remain about two and a half times higher than in the United States, with gas prices almost four times higher. She pointed to European Commission estimates of nearly EUR 150 billion in annual investment for new generation capacity and modernised grids, and put broader green-transition financing needs at EUR 1.2 trillion per year, with the private sector expected to provide over two-thirds. The speech highlighted “system costs” from intermittency, curtailment and grid constraints, while pointing to estimates that meeting solar and wind targets could cut electricity prices by more than a quarter by 2030, that each EUR 1 invested in grid upgrades could save over EUR 2 in system costs, and that deeper cross-border market integration could reduce overall system costs by around 9% or EUR 26 billion annually. To unlock investment, Lagarde emphasised integrated EU capital markets, stable delivery of existing green targets and a predictable carbon price, shorter permitting timelines that can currently reach up to five years for utility-scale solar and nine years for onshore wind in some Member States, and policy steps to reduce the tax disadvantage of electricity relative to gas to support electrification.