Electric companies require a clearer understanding of timelines for technological commercialization/deployment and project development to inform the establishment of time-bound carbon dioxide or greenhouse gas reduction goals and long-range integrated resource plans as well as other strategic endeavors. Using insights from the literature and EPRI expert perspectives, this report elucidates the operational mechanisms, attributes, and current and future technological progress for a wide range of energy technologies and enabling infrastructure. This report may serve as an abbreviated but instructive reference for electric company resource planning and junior staff as well as other stakeholders. This report accompanies Technology Deployment Timelines: Project Development (3002028509), which highlights key project development activities and considerations as well as notional estimates of project development duration for the same technologies featured in this report.