
Rooftop solar and EV batteries could supply 85% of Japan's electricity needs
Credit: Unsplash/CC0 Public Domain A new study led by Tohoku University has revealed that rooftop solar panels, when combined with electric vehicles (EVs) as batteries, could supply 85% of Japan's electricity demand and reduce carbon dioxide emissions by 87%. The research provides a promising pathway for Japan's local governments to achieve carbon neutrality by taking advantage of existing infrastructure—rooftops and vehicles—rather than relying solely on large-scale energy systems. As the urgency of climate change accelerates, cities and municipalities around the world are exploring ways to decarbonize their energy systems to slow down these changes. Japan, with its mountainous terrain and