This lecture presents the so-called Transactive Control & Coordination framework developed at PNNL. Transactive control refers to techniques for managing the generation, consumption or flow of assets within a system, using economic or market-based constructs, while respecting system constraints. The term “transactive” comes from considering that decisions are made based on a value. These decisions may be analogous to, or literally, economic transactions. The basic mechanism for this approach to distributed control and decision making is a double auction system. Global optimality conditions will be discussed as well as the notion of sufficient bidding. The theory will be exemplified both by simulation examples for different bidding strategies as well as by real-life demonstrations.