Planning Coordination between System Operators, Transmitters and Distributors: Frameworks, Methods, and Allocation of Costs and Benefits

Working Group C1.40 investigated how Independent System Operators (ISOs), Transmission System Operator (TSOs) and Distribution System Operators (DSOs) coordinate their planning processes in response to the ongoing transition of electric distribution systems towards active, two-way systems that incorporate higher quantities of distributed energy resources (“DERs”).  WG C1.40 has focused its assessment on specific aspects of planning coordination: electric industry frameworks, planning processes, and the allocation of costs and benefits from planning decisions.   Two assessments was conducted: a survey of CIGRÉ members and a literature review. These assessments were also supplemented by expert opinions offered by WG C1.40 members. WG C1.40’s work offers recommendations on best practice for…