We are pleased to read that North Carolina-based company NET Power Breaks Ground on Demonstration Plant for World’s First Emissions-Free, Low-Cost Fossil Fuel Power Technology. The NET Power technology, which uses carbon dioxide as a working fluid to drive a combustion turbine, is precisely what we proposed in our work on Zero Emission Power Plants during the 1990s with Cesare Marchetti, Nebojsa Nakicenovic, Eugen Yantovski, and colleagues at Tokyo Electric Power. See, for example, the sections on ZEPPs in Five worthy ways to spend large amounts of money for research on environment and resources (The Bridge 29(3): 4-16, 1999) and JH Ausubel Big green energy machines (The Industrial Physicist 10(5): 20-24, 2004). We wish for the success of NET Power and also Clean Energy Systems, another firm with promising ZEPP technology.