Stay informed of changes to transmission rates and review billing cycle communications. Rate updates are posted monthly, reflecting any changes from the prior month. Billing cycle notices will be posted when statements are available for download on the portal. Learn which months are being resettled and know what to expect in the current and upcoming billing cycles.
May 2026 Rate Changes
Rate changes were processed for the following item:
Schedules 7, 8 & 9:
· Rate Update of Annual Transmission Revenue Requirement (ATRR) for select number of forward-looking Transmission Owners to incorporate their 2024 True-Up adjustment at the correct ROE.
· TOs include: ATC, ITC, ITCM, MMU, METC, NIPS, GRE
· The MISO average rate decreased by -0.003%.
Schedules 26, 37 & 38:
· Rate Update of Annual Transmission Revenue Requirement (ATRR) for select number of forward-looking Transmission Owners to incorporate their 2024 True-Up adjustment at the correct ROE.
· TOs include: ATC, ITC, ITCM, METC, NIPS, GRE
· The MISO average rate increased by 0.01%.
Schedule 26A:
· Rate Update of Annual Transmission Revenue Requirement (ATRR) for select number of forward-looking Transmission Owners to incorporate their 2024 True-Up adjustment at the correct ROE. (
· TOs include: ATC, ITC, ITCM, METC, NIPS, GRE
· The overall Revenue Requirement decreased by -0.07%
Schedule 26C:
· Rate Update of Annual Transmission Revenue Requirement (ATRR) for select number of forward-looking Transmission Owners to incorporate their 2024 True-Up adjustment at the correct ROE.
· TOs include: NIPS
· The overall Revenue Requirement decreased by -0.28%
Schedule 26E:
· Rate Update of Annual Transmission Revenue Requirement (ATRR) for select number of forward-looking Transmission Owners to incorporate their 2024 True-Up adjustment at the correct ROE.
· TOs include: NIPS
· The overall Revenue Requirement decreased by -0.21%
Effective May 1, 2026
May 2026 Billing Cycle
Preliminary transmission (Day 1) monthly settlement files for May 2026 will be posted to the market portal by 8am June 2, 2026. The files end with _D2.txt or _D2.xlsx
Final transmission (Day 1) monthly settlement files for May 2026 will be posted to the market portal by 8am June 5, 2026. The files end with _TS0.txt or _TS0.xlsx
The full schedule of 2026 billing cycle key dates is posted here.
|
YEAR |
TS0 |
TS1 |
R2 |
R3 |
TS4 |
TS8 |
TS12 |
|
2026 |
May-26 |
Apr-26 |
Mar-26 |
Feb-26 |
Jan-26 |
Sep-25 |
May-25 |
May 2026 Prior Period Adjustments
ROE Resettlement for Rate Year 2026 – EL14-12
· January 1, 2026 – April 30, 2026
· Affects Schedules 7, 8, 9, 26, 26A, 26C, 26E, 37 and 38
· Interest will be applied
· Adjustments will be found on each settlement instance tab
Updated 5/28/2026
June 2026 Prior Period Adjustments
Sam Houston Electric Cooperative Inc Integration (SHECO) – ER26-628
On March 12, 2026, FERC approved SHECO’s transition to a transmission-owning member of MISO, effective February 1, 2026. Transmission rates updated prospectively on April 1, 2026, with adjustments applied back to February 1.
· February 1, 2026 – March 31, 2026
· Affects Schedules 7, 8 and 9
· Interest is not applied
· Affects customers in the ETTO pricing zone as well as out and through
· Adjustments will be found on each settlement instance tab
Continuing Error Secondary Redirects from Zero Rate Zone
· February 1, 2025 – February 28, 2025
· Affects Schedules 1, 8, 26, 33 and 45
· Interest is not applied
· Affects customer MAG and revenue recipients
· Adjustments will be found on the February 2025 tab
July 2026 Prior Period Adjustments
· None at this time
Disclaimer: Adjustments and timing are subject to change.
Updated 5/28/2026