Spain and Portugal hit record solar glut as negative prices surge

Spain and Portugal experienced more hours of negative wholesale electricity prices than any other European region in Q2 2024, a direct result of solar capacity growth outpacing demand. The problem will intensify as wind and solar installations accelerate across the continent. Negative prices—utilities paying customers to consume electricity—expose a core tension in Europe's energy transition: grids designed for dispatchable generation now face the opposite problem. Peak production hours deliver too much cheap renewable supply, threatening grid stability and renewable project economics without storage or demand flexibility solutions. This is the leading indicator of which European markets will need to radically restructure their electricity markets, incentive structures, and grid infrastructure first.