Yes. People are now building coal-fired power plants in Europe, and some recently in China, that are exceeding 42% to 43% efficiency, which is much better than the fleet average in North America. But if you ask about the cost-effectiveness of pushing beyond that number, it's very cost-ineffective, many hundreds of dollars a tonne of CO2 to push to ultra-supercritical with double reheat, which would be the latest thing.
