FERC accepts WPPI Energy MISO tariff revisions
Summary
The Federal Energy Regulatory Commission (FERC) issued a delegated order accepting WPPI Energy's February 12, 2026 filing of revisions to the MISO Open Access Transmission, Energy and Operating Reserve Markets Tariff. The acceptance was issued under Docket No. ER26-1349. This is a routine tariff administration action by FERC.
What changed
FERC's Office of Energy Market Regulation issued a letter order accepting WPPI Energy's tariff revision filing submitted on 02/12/2026. The revisions modify the MISO Open Access Transmission, Energy and Operating Reserve Markets Tariff under the applicable FERC regulations governing wholesale electricity markets.
Regulated entities operating under the MISO tariff, including transmission customers and market participants, should verify their systems reflect the updated tariff provisions. WPPI Energy's tariff modifications are now effective as of the acceptance date. No immediate compliance actions are required by other market participants unless their operations specifically reference the revised provisions.
What to do next
- Verify tariff system updates reflect the accepted MISO tariff revisions
- Review operations for any provisions affected by WPPI Energy's tariff modifications
Archived snapshot
Apr 7, 2026GovPing captured this document from the original source. If the source has since changed or been removed, this is the text as it existed at that time.
Document Info for Accession Number: 20260406-3062
Details Document: 04/06/2026
Filed: 04/06/2026
Posted: 04/06/2026 03:29:06 PM
First Received Date: 04/06/2026 03:10:52 PM
Security Level: Public
Official: Yes
E-filing: No
Non-decisional: No
Category: Issuance
Library: Electric
Aperture: 0
File Type:
Description* :** Letter order accepting WPPI Energy's 02/12/2026 filing of revisions to the MISO Open Access Transmission, Energy and Operating Reserve Markets Tariff etc. under ER26-1349.
File List
| Docket | Sub-Docket | Type |
| --- | --- | --- |
| ER26-1349 | 000 | On Document |
| Document Class | Document Type |
| --- | --- |
| Order/Opinion | Delegated Order |
| Correspondent | Last Name | First Name | MI | Role/Org |
| --- | --- | --- | --- | --- |
| AGENT | * | * | | MIDCONTINENT INDEPENDENT SYSTEM OPERATOR, INC. |
| RECIPIENT | * | * | | WPPI ENERGY |
| AUTHOR | Tingle-Stewart | N | Y | OFFICE OF ENERGY MARKET REGULATION |
Named provisions
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