sCO2 Waste‑Heat Rollout

China’s Chaotan One reportedly put 15–30 MW supercritical CO2 generators into commercial service at a Guizhou steel plant to convert industrial waste heat to electricity with claimed 20–30% higher conversion efficiency than steam WHR. Public statements lack materials, impurity controls, and maintenance assumptions, leaving durability and true economics unverified. — If sCO2 proves durable and cost‑effective, it could materially change industrial decarbonization and energy policy; if not, early hype could misdirect investment and policy subsidies — so independent operational data and five‑year performance monitoring are public‑interest essentials.