The rise in solar and wind energy has led to negative electricity prices in Europe, particularly on the Iberian Peninsula, where Spain and Portugal recorded significant hours of sub-zero pricing. This phenomenon occurs when supply exceeds demand, often during periods of high renewable energy generation. Despite the apparent benefits of negative prices, they do not lower consumer bills. Europe's outdated energy grid struggles to accommodate the renewables boom, and experts warn of insufficient grid capacity. Solutions include improving battery storage systems and considering free or discounted energy incentives.