KCC hears SPP 'We Expand' study plan to examine DC tie expansion between interconnections
Summary
Justin Grady told the commission SPP's new 'We Expand' study will evaluate enlarging DC tie capacity between the Eastern and Western interconnections (currently ~1,300 MW). The study will take about a year and underpin any cost-allocation recommendations for expanded interregional transfer capability.
Justin Grady briefed commissioners on SPP's 'We Expand' study, which will evaluate whether it is economically and operationally justified to expand DC ties that link the Eastern and Western interconnections. Grady said the ties now permit about 1,300 MW of transfers and that SPP will take roughly a year to complete the study, with final results expected around late 2027 or early 2028.
He said the study's outputs will underpin cost-allocation discussions if SPP recommends expanding tie capacity. Grady noted that larger transfers could reduce price divergence between interconnections — he cited SPP modeling showing marginal energy costs can differ by more than $30/MWh about 35% of the time and illustrated how eliminating that divergence could materially lower customer bills.
AI generated
The text on this page is AI generated. Summaries, highlights, analysis, and video transcripts are all produced from the original source material.
AI can make mistakes, so if you spot one, and we will fix it for everyone.
Note: the source content is unaltered by us. Any content source we link to, be it a video, an audio recording, or a document, is presented exactly as its publisher released it. That publisher is usually a government body, sometimes an individual official or another organisation.
