Workshop Insights In order for DERs to grow in the MISO region in a reliable and value-enhancing manner, entities that play different roles in the process - including state regulators, utilities, and MISO, among others - need to communicate and work together. To that end, MISO and OMS, which represents the region's state regulatory agencies, collaboratively developed a series of workshops in 2019 to establish a common language for DER discussions and to begin framing key questions. DER 100 WORKSHOP What Are DERs? This introductory-level DER course focuses on familiarizing stakeholders with the language, types, future growth, aggregation and wholesale market participation of DERs. KEY QUESTION • What technologies compose the DER ecosystem and what can each technology provide to the electric system? BIG IDEA • DERs offer the potential of new resources to help maintain grid reliability but will also have potential reliability impacts, which must be considered. DER 200 WORKSHOP The Importance of DERs to the Bulk Electric System This course focuses on the technical concerns about adding significant DERs to the electrical grid. Topics include communication and latency, visibility, load modification, forecasting, planning and reliability. KEY QUESTIONS • Communications and Visibility: How will DERs communicate with the utility and the bulk electric system? What data needs to be shared? • Ensuring Reliable Operations: How might DER growth require changes to operational practices to ensure operators receive the data they need to make decisions? BIG IDEAS • Load Curves: As DERs continue to grow, load curves will change. Forecasting models will need to incorporate the behavior of growing penetrations of DERs. • Grid Planning: Planning at the transmission level looks many years into the future; transmission lines and traditional generation can take years to develop. DERs can be built much more quickly, and planning will need to become more nimble. 12
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