Eric Chaisson’s Energy Rate Density (Φₘ) framework provides a unique lens to evaluate alternative economic models like Doughnut Economics and Steady-State Economics. These models challenge the growth-centric paradigm by redefining progress, equity, and sustainability. Below, we explore how they align (or conflict) with Φₘ, and what insights emerge for building a high-complexity, low-impact civilization. Doughnut Economics: Staying Within Planetary Boundaries While Meeting Hum