FERC last week granted SPP’s request to waive its one-year resettlement window so that the RTO can correctly bill transmission-upgrade customers for a month mistakenly omitted from invoices. The commission said SPP’s request satisfied its waiver criteria, and that the RTO had acted “in good faith” to calculate the corrected transmission revenue credits amounts and “ensure that customers’ bills are accurately resettled” (ER18-381).

FERC rejected Xcel Energy’s contention that SPP had failed to show that there are no undesirable consequences. The commission noted SPP said it alerted stakeholders it needed to correct the settlements. “Therefore, stakeholders have been on notice of and expected the planned corrections,” FERC said.

SPP said the waiver would allow it to include September 2016 billable amounts under Attachment Z2 of its Tariff, which assigns financial credits and obligations for sponsored transmission upgrades. SPP said in November that it had inadvertently omitted resettled amounts from September 2016 in its November 2017 invoices, placing the month outside the Tariff’s resettlement requirements. (See SPP Invoices Lead to Confusion on Z2 Payments.)

— Tom Kleckner