Transmission Service Studies

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Impact Studies

The Transmission Service Studies department evaluates long-term requests for Network Integration and Point-To-Point transmission service through various processes, including the Aggregate Transmission Service Study (ATSS) process under Attachment Z1 of the SPP Open-Access Transmission Tariff (OATT), and performs screening studies through the Delivery Point Transfer (DPT) and Long-Term Service Request (LTSR) processes under Attachment AR of the SPP OATT.

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For questions or study requests, please contact ATSS@spp.org.