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2026 Impact Studies
The following Planning or System Impact Studies have been completed and are available. Studies listed on this page were initiated in 2026 but may not have been completed during the year.

Interface Study Period Impact Study Number Request Number Performed Date Posted Report
CSWS.GATEWAY-ERCOTE January 24, 2026 to January 27, 2026 SPP-2026-002 108258258 1/21/2026 1/21/2026 Download
CSWS.GATEWAY-ERCOTE January 24, 2026 to January 27, 2026 SPP-2026-003 108258260 1/21/2026 1/21/2026 Download
CSWS.HCPP-ERCOTE January 24, 2026 to January 27, 2026 SPP-2026-004 108258296 1/21/2026 1/21/2026 Download
CSWS.GATEWAY-ERCOTE January 27, 2026 to January 29, 2026 SPP-2026-005 108259571 1/22/2026 1/22/2026 Download
CSWS.GATEWAY-ERCOTE January 28, 2026 to January 30, 2026 SPP-2026-006 108267677 1/22/2026 1/22/2026 Download
CSWS.GATEWAY-ERCOTE January 28, 2026 to January 30, 2026 SPP-2026-007 108267682 1/22/2026 1/22/2026 Download
OPPD-MEC January 24, 2026 to January 27, 2026 SPP-2026-012 108283004 1/23/2026 1/23/2026 Download
OPPD-MEC January 24, 2026 to January 25, 2026 SPP-2026-014 108294105 1/23/2026 1/23/2026 Download
CSWS.HCPP-ERCOTE January 27, 2026 to January 31, 2026 SPP-2026-016 108269506 1/26/2026 1/26/2026 Download
CSWS.HCPP-ERCOTE January 27, 2026 to January 31, 2026 SPP-2026-017 108269507 1/26/2026 1/26/2026 Download
ERCOTE-CSWS.GATEWAY January 28, 2026 to January 29, 2026 SPP-2026-022 108337853 1/27/2026 1/27/2026 Download
ERCOTE-CSWS.GATEWAY January 29, 2026 to February 01, 2026 SPP-2026-023 108334522 1/27/2026 1/27/2026 Download
ERCOTE-CSWS.GATEWAY January 29, 2026 to February 01, 2026 SPP-2026-024 108334526 1/28/2026 1/28/2026 Download
ERCOTE-CSWS.GATEWAY February 01, 2026 to February 04, 2026 SPP-2026-029 108334550 1/29/2026 1/29/2026 Download
ERCOTE-CSWS.HCPP February 01, 2026 to February 04, 2026 SPP-2026-030 108334557 1/29/2026 1/29/2026 Download
OPPD-NPPD.OPPD.LDX April 01, 2026 to January 01, 2027 SPP-2026-042 108648753 3/12/2026 3/12/2026 Download
CSWS.HCPP-ERCOTE April 24, 2026 to April 25, 2026 SPP-2026-044 109191219 4/22/2026 4/22/2026 Download
CSWS.GATEWAY-ERCOTE April 24, 2026 to April 25, 2026 SPP-2026-045 109191220 4/22/2026 4/22/2026 Download
CSWS.HCPP-ERCOTE April 24, 2026 to April 25, 2026 SPP-2026-046 109191221 4/22/2026 4/22/2026 Download
CSWS.HCPP-ERCOTE April 26, 2026 to April 28, 2026 SPP-2026-047 109193717 4/23/2026 4/23/2026 Download
CSWS.HCPP-ERCOTE April 26, 2026 to April 28, 2026 SPP-2026-048 109193719 4/23/2026 4/23/2026 Download
CSWS.HCPP-ERCOTE April 27, 2026 to April 29, 2026 SPP-2026-049 109193723 4/24/2026 4/24/2026 Download
CSWS.GATEWAY-ERCOTE April 28, 2026 to April 30, 2026 SPP-2026-050 109204075 4/24/2026 4/24/2026 Download
CSWS.HCPP-ERCOTE April 28, 2026 to April 29, 2026 SPP-2026-051 109239202 4/27/2026 4/27/2026 Download
CSWS.HCPP-ERCOTE April 28, 2026 to April 29, 2026 SPP-2026-052 109239204 4/27/2026 4/27/2026 Download
CSWS.EASTMAN-ERCOTE May 10, 2026 to May 12, 2026 SPP-2026-054 109333638 5/6/2026 5/6/2026 Download
CSWS.EASTMAN-ERCOTE May 10, 2026 to May 12, 2026 SPP-2026-055 109333643 5/7/2026 5/7/2026 Download
SPRM_SPRM-SPA June 01, 2026 to July 01, 2026 SPP-2026-057 109368688 5/14/2026 5/14/2026 Download
SPRM_SPRM-SPA July 01, 2026 to September 01, 2026 SPP-2026-058 109460092 5/22/2026 5/22/2026 Download
SPRM_SPRM-SPA September 01, 2026 to October 01, 2026 SPP-2026-060 109624886 6/9/2026 6/9/2026 Download
WAUE.PCWF.PCWF-MEC July 01, 2026 to July 03, 2026 SPP-2026-061 109850462 06/29/2026 6/30/2026 Download
WAUE.PCWF.PCWF-MEC July 01, 2026 to July 03, 2026 SPP-2026-062 109850466 6/29/2026 6/30/2026 Download
WAUE.PCWF.PCWF-MEC July 01, 2026 to July 08, 2026 SPP-2026-063 109850514 6/29/2026 6/30/2026 Download
WAUE.PCWF.PCWF-MEC July 01, 2026 to July 08, 2026 SPP-2026-064 109850522 6/30/2026 6/30/2026 Download
WAUE.PCWF.PCWF-MEC July 01, 2026 to July 08, 2026 SPP-2026-065 109850529 6/30/2026 6/30/2026 Download
ERCOTE-CANADIANHILLS1 July 02, 2026 to July 03, 2026 SPP-2026-067 109883158 6/30/2026 6/30/2026 Download
ERCOTE-CANADIANHILLS1 July 03, 2026 to July 04, 2026 SPP-2026-068 109883161 7/1/2026 7/1/2026 Download

If you have any questions, please submit a ticket on RMS.