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Reinventing the Utility for DERs A Proposal for a DSO-Centric Retail Electricity Market

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Document pages: 14 pages

Abstract: The increasing penetration of intermittent renewables, storage devices, andflexible loads is introducing operational challenges in distribution grids. Theproper coordination and scheduling of these resources using a distributedapproach is warranted, and can only be achieved through local retail marketsemploying transactive energy schemes. To this end, we propose adistribution-level retail market operated by a Distribution System Operator(DSO), which schedules DERs and determines the real-time distribution-levelLocational Marginal Price (d-LPM). The retail market is built using adistributed Proximal Atomic Coordination (PAC) algorithm, which solves theoptimal power flow model while accounting for network physics, renderinglocationally and temporally varying d-LMPs. A numerical study of the marketstructure is carried out via simulations of the IEEE-123 node network usingdata from ISO-NE and Eversource in Massachusetts, US. The market performance iscompared to existing retail practices, including demand response (DR) withno-export rules and net metering. The DSO-centric market increases DERutilization, permits continual market participation for DR, lowers electricityrates for customers, and eliminates the subsidies inherent to net meteringprograms. The resulting lower revenue stream for the DSO highlights theevolving business model of the modern utility, moving from commoditized marketstowards performance-based ratemaking.

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