June 5, 2025
Reston, VA. – The Energy Systems Integration Group (ESIG) has released a fact sheet titled “Wide-Area Resource Adequacy Assessments: Probabilistic RA planning for Interconnected Grids,” describing the need for, and key elements of, interconnection-wide or continental resource adequacy assessments. These wide-area resource adequacy assessments can provide a clearer understanding of how regions may be able to assist one another during system stress, while supporting and validating local and regional assessments. Each region, when evaluating whether the grid’s resource mix can serve demand across a range of uncertainties, typically plans in isolation. Regions use different resource adequacy criteria, methods, and assumptions, a siloed approach that makes it difficult to evaluate system-wide risks…
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