From solar-absorbing granite facades that help regulate indoor temperatures to photovoltaic-embedded limestone pathways that generate electricity, these innovations are transforming passive stone surfaces into active energy contributors.
A ceremony marking the operation of a 1,000-MW photovoltaic project developed by China General Nuclear Power Group (CGNPC) is held in Vientiane, Laos, April 7, 2026. (Photo by Kaikeo Saiyasane/Xinhua).