태양광과 배터리로 세계 전력 공급 가능

The dramatic cost decline in solar and battery technology has made it economically viable for 80% of the global population to achieve reliable, clean electricity through these systems alone by 2030. This fundamentally shifts the renewable energy debate from technical feasibility to economic advantage, particularly in the populous tropical and subtropical regions where solar efficiency is highest. The findings suggest an inevitable transition toward decentralized, fossil-fuel-independent energy systems with far-reaching implications for global energy security and industrial planning.