Development of a simulation environment for economic impacts of distributed generation and energy storage on distribution feeders

System planning for incorporation of electric energy storage systems into a distribution network requires consideration of a range of technical and economic variables. A modeling system with a graphical user interface has been developed to incorporate an accurate system model of a distribution feeder including distributed generation and energy storage located along the feeder, as well as economic parameters. Output of the model represents a time history of the simulated feeder with the given parameters and time profiles of loads, generation, and storage systems. In addition to active power flows, the model also accounts for reactive power flows, with the capability of for reactive compensation from renewable generation and energy storage inverters. The cost of energy via Locational Marginal Pricing (LMP) and Renewable Energy Credits (RECs) is incorporated. This paper describes the modeling system and provides example results for an actual feeder in the Eastern Massachusetts LMP area.