Nigel Grier is a systems thinker, writer, and founder working at the intersection of ecological engineering, energy efficiency, and post-carbon economics. He developed the Negawatt Economy—a model measuring conservation over consumption. Through ventures like Grier & Associates and Negawatt Labs, he advances sustainable infrastructure, regenerative finance, and ecological jurisprudence. His work integrates science, law, and philosophy to design enduring systems that protect the biosphere.