Amory Lovins describes how to integrate negawatts with diverse supplies at least cost. “Negawatt” refers to electric end-use efficiency. This presentation also explains the concept of “tunneling through the cost barrier.” The future of energy is in superefficient end-use; increasingly diverse, dispersed, renewable electricity sources that cost less and make large-scale failures impossible by design; a shift of the key energy carrier from electricity to hydrogen; and policy frameworks and market processes that find and integrate the least-cost mix of all options, encourage innovation, and build on consensus.”