Planned Service Outage  Saturday, August 22, 2026 Download this information as a PDF report
Date Range:   By default, PSO's are posted for 90 days past Notice End Date. Select date range and click Retrieve to select all PSO's effective, at some point, within the selected date range.
Notice TypePosted D/TNotice Eff D/TNotice End D/TNotice IdentifierSubjectResponse D/TActionMap
Maint8/21/2026
9:52 AM		7/6/2026
9:00 AM		9/4/2026
5:00 PM		3910Elk Basin Compressor Station DownloadView Map
Maint8/20/2026
5:01 PM		9/2/2026
9:00 AM		9/2/2026
5:00 PM		3909Steele Compressor Station DownloadView Map
Maint8/20/2026
4:23 PM		8/17/2026
9:00 AM		8/21/2026
5:00 PM		3908Line Section 17 Mainline Maintenance DownloadView Map
Maint8/20/2026
9:22 AM		9/3/2026
9:00 AM		9/3/2026
5:00 PM		3907Williston Compressor Station DownloadView Map
Maint8/19/2026
4:13 PM		9/8/2026
9:00 AM		9/11/2026
5:00 PM		3906Morgan Creek Compressor Station DownloadView Map
Maint8/19/2026
3:45 PM		9/10/2026
9:00 AM		9/10/2026
7:00 PM		3905Elk Basin Compressor Station DownloadView Map
Maint8/18/2026
3:30 PM		9/10/2026
9:00 AM		9/10/2026
10:00 PM		3904Line Section 15 Belle Fourche - Rapid City DownloadView Map
Maint8/18/2026
3:23 PM		9/8/2026
9:00 AM		9/8/2026
10:00 PM		3903Line Section 15 Belle Fourche - Rapid City DownloadView Map
Maint8/18/2026
11:10 AM		5/22/2026
9:00 AM		9/11/2026
5:00 PM		3902Hardin Compressor Station DownloadView Map
Maint8/18/2026
7:52 AM		8/17/2026
9:00 AM		8/20/2026
5:00 PM		3901Cleveland Compressor Station Download
Maint8/17/2026
4:07 PM		9/3/2026
9:00 AM		9/4/2026
9:00 AM		3900Line Section 24 Cleveland – Mapleton DownloadView Map
Maint8/17/2026
3:21 PM		8/17/2026
9:00 AM		8/20/2026
5:00 PM		3899Cleveland Compressor Station Download
Maint8/16/2026
11:52 AM		8/17/2026
9:00 AM		8/18/2026
9:00 AM		3898Cleveland Compressor Station Download
Maint8/14/2026
4:12 PM		9/15/2026
9:00 AM		9/25/2026
5:00 PM		3897Line Section 14 (MIGC-Recluse) DownloadView Map
Maint8/14/2026
2:21 PM		8/10/2026
9:00 AM		8/15/2026
9:00 AM		3896Line Sec. 06 (Morgan Creek to Williston) Hydrotest DownloadView Map
Maint8/14/2026
1:59 PM		8/25/2026
9:00 AM		8/25/2026
5:00 PM		3895ElkHorn Creek Compressor Station DownloadView Map
Maint8/14/2026
9:13 AM		8/19/2026
9:00 AM		8/19/2026
9:00 PM		3894Glen Ullin Compressor Station DownloadView Map
Maint8/13/2026
2:23 PM		8/10/2026
9:00 AM		8/15/2026
9:00 AM		3893Line Sec. 06 (Morgan Creek to Williston) Hydrotest DownloadView Map
Maint8/12/2026
11:24 AM		8/18/2026
9:00 AM		8/18/2026
1:00 PM		3892Golva Compressor Station (Line Section 26) DownloadView Map
Maint8/11/2026
2:28 PM		8/18/2026
9:00 AM		8/18/2026
9:00 PM		3891Line Section 07 - Blue Flint Lateral DownloadView Map
Maint8/10/2026
4:25 PM		9/16/2026
9:00 AM		9/16/2026
6:00 PM		3890Belle Fourche Compressor Station DownloadView Map
Maint8/10/2026
3:57 PM		9/9/2026
9:00 AM		9/9/2026
5:00 PM		3889Willow Creek Compressor Station DownloadView Map
Maint8/7/2026
4:39 PM		8/11/2026
9:00 AM		8/11/2026
1:00 PM		3888Golva Compressor Station (Line Section 26) DownloadView Map
Maint8/7/2026
4:32 PM		8/6/2026
9:00 AM		8/7/2026
5:00 PM		3887Golva Compressor Station (Line Section 26) DownloadView Map
Maint8/7/2026
11:55 AM		8/11/2026
9:00 AM		8/11/2026
1:00 PM		3886Golva Compressor Station (Line Section 26) DownloadView Map
Maint8/7/2026
10:28 AM		8/6/2026
9:00 AM		8/7/2026
5:00 PM		3885Golva Compressor Station (Line Section 26) DownloadView Map
Maint8/6/2026
12:56 PM		8/5/2026
2:00 PM		8/7/2026
9:00 PM		3884Line Section 24 (Cleveland <> Mapleton) DownloadView Map
Maint8/5/2026
3:33 PM		8/6/2026
9:00 AM		8/7/2026
5:00 PM		3883Golva Compressor Station (Line Section 26) DownloadView Map
Maint8/5/2026
2:33 PM		8/5/2026
2:00 PM		8/7/2026
5:00 PM		3882Line Section 24 (Cleveland <> Mapleton) DownloadView Map
Maint8/5/2026
2:08 PM		8/5/2026
2:00 PM		8/7/2026
5:00 PM		3881Line Section 24 (Cleveland <> Mapleton) DownloadView Map
Maint8/5/2026
11:34 AM		8/11/2026
9:00 AM		8/11/2026
1:00 PM		3880Golva Compressor Station (Line Section 26) DownloadView Map
Maint8/4/2026
4:15 PM		8/17/2026
9:00 AM		8/21/2026
5:00 PM		3879County Line Plant DownloadView Map
Maint8/4/2026
10:28 AM		8/2/2026
9:00 AM		8/6/2026
5:00 PM		3878ElkHorn Creek Compressor Station DownloadView Map
Maint8/1/2026
3:21 PM		8/2/2026
9:00 AM		8/6/2026
5:00 PM		3877ElkHorn Creek Compressor Station DownloadView Map
Maint7/31/2026
3:01 PM		8/18/2026
9:00 AM		8/21/2026
9:00 AM		3876VGT - Felton Point Download
Maint7/31/2026
10:46 AM		7/6/2026
9:00 AM		8/21/2026
5:00 PM		3875Elk Basin Compressor Station DownloadView Map
Maint7/31/2026
9:59 AM		6/8/2026
9:00 AM		8/6/2026
5:00 PM		3874Line Section 22 Elk Basin - Billings DownloadView Map
Maint7/29/2026
3:41 PM		8/17/2026
9:00 AM		8/20/2026
5:00 PM		3873Dickinson Compressor Station DownloadView Map
Maint7/29/2026
3:11 PM		8/13/2026
9:00 AM		8/13/2026
5:00 PM		3872Line Section 07 - Blue Flint Lateral DownloadView Map
Maint7/28/2026
2:31 PM		9/15/2026
9:00 AM		9/15/2026
9:00 PM		3871Tioga Compressor Station Annual ESD & Maintenance DownloadView Map
Maint7/28/2026
2:15 PM		6/15/2026
9:00 AM		9/11/2026
5:00 PM		3870Charbonneau Compressor Station-Deliveries to NBPL DownloadView Map
Maint7/27/2026
4:53 PM		7/30/2026
9:00 AM		8/6/2026
5:00 PM		3869Cleveland Compressor Station DownloadView Map
Maint7/27/2026
1:46 PM		5/22/2026
9:00 AM		8/28/2026
5:00 PM		3868Hardin Compressor Station DownloadView Map
Maint7/24/2026
2:33 PM		7/24/2026
3:00 PM		7/31/2026
5:00 PM		3867Elk Basin Compressor Station Download
Maint7/17/2026
5:20 PM		7/17/2026
9:00 AM		7/21/2026
9:00 AM		3866VGT - Felton Point Download
Maint7/17/2026
8:44 AM		7/17/2026
9:00 AM		8/31/2026
5:00 PM		3865WBI-Aggregate Storage Withdraw Download
Maint7/15/2026
3:37 PM		8/17/2026
9:00 AM		8/21/2026
5:00 PM		3864Line Section 17 Mainline Maintenance DownloadView Map
Maint7/15/2026
12:05 PM		7/22/2026
7:30 AM		7/22/2026
4:30 PM		3863Bismarck Compressor Station DownloadView Map
Maint7/15/2026
10:34 AM		7/17/2026
9:00 AM		7/21/2026
9:00 AM		3862VGT - Felton Point Download
Maint7/14/2026
3:14 PM		8/10/2026
9:00 AM		8/14/2026
5:00 PM		3861Line Sec. 06 (Morgan Creek to Williston) Hydrotest DownloadView Map
Maint7/13/2026
1:55 PM		8/3/2026
9:00 AM		8/7/2026
5:00 PM		3860Line Section 07 (Minot South TBS) DownloadView Map
Maint7/13/2026
9:56 AM		6/8/2026
9:00 AM		7/31/2026
5:00 PM		3859Line Section 22 Elk Basin - Billings DownloadView Map
Maint7/10/2026
9:27 AM		7/10/2026
9:00 AM		7/13/2026
11:00 PM		3858Cleveland Compressor Station DownloadView Map
Maint7/8/2026
2:21 PM		5/22/2026
9:00 AM		8/21/2026
6:00 PM		3857Hardin Compressor Station DownloadView Map
Maint7/7/2026
4:18 PM		9/1/2026
9:00 AM		9/2/2026
5:00 PM		3856Glen Ullin Compressor Station DownloadView Map
Maint7/6/2026
9:02 AM		6/25/2026
9:00 AM		7/8/2026
5:00 PM		3855Golva Compressor Station (Line Section 26) DownloadView Map
Maint7/2/2026
1:21 PM		6/15/2026
9:00 AM		7/31/2026
5:00 PM		3854Charbonneau Compressor Station-Deliveries to NBPL DownloadView Map
Maint7/1/2026
3:25 PM		7/13/2026
9:00 AM		7/17/2026
5:00 PM		3853Line Section 1 (Belfield TBS Lateral) Hydrotest DownloadView Map
Maint7/1/2026
9:07 AM		5/22/2026
9:00 AM		8/3/2026
5:00 PM		3852Hardin Compressor Station DownloadView Map
Maint6/30/2026
11:33 AM		7/6/2026
9:00 AM		7/31/2026
5:00 PM		3851Elk Basin Compressor Station DownloadView Map
Maint6/29/2026
3:11 PM		7/13/2026
9:00 AM		7/24/2026
5:00 PM		3850Line Section 7 (Burlington Lateral) Hydrotest DownloadView Map
Maint6/26/2026
9:40 AM		7/14/2026
10:00 AM		7/14/2026
1:00 PM		3849Saco Compressor Station DownloadView Map
Maint6/25/2026
11:29 AM		7/1/2026
9:00 AM		7/1/2026
2:00 PM		3848Bismarck Compressor Station DownloadView Map
Maint6/24/2026
4:34 PM		6/25/2026
9:00 AM		7/8/2026
5:00 PM		3847Golva Compressor Station (Line Section 26) DownloadView Map
Maint6/17/2026
2:20 PM		7/1/2026
9:00 AM		7/1/2026
2:00 PM		3846Bismarck Compressor Station DownloadView Map
Maint6/16/2026
10:26 AM		6/23/2026
9:00 AM		6/23/2026
12:00 PM		3845Charbonneau Compressor Station Download
Maint6/15/2026
3:31 PM		6/16/2026
9:00 AM		6/16/2026
1:00 PM		3844Tioga Compressor Station (Elkhorn Creek Delivery) DownloadView Map
Maint6/10/2026
10:43 AM		5/22/2026
9:00 AM		7/1/2026
5:00 PM		3843Hardin Compressor Station DownloadView Map
Maint6/4/2026
4:36 PM		6/1/2026
9:00 AM		6/5/2026
5:00 PM		3842Line Section 2 (Dickinson - Bismarck) Hydrotest DownloadView Map
Maint6/4/2026
4:30 PM		6/1/2026
9:00 AM		6/5/2026
5:00 PM		3841Line Section 16 (Cabin Creek - Hathaway) Hydrotest DownloadView Map
Maint6/3/2026
11:38 AM		6/8/2026
9:00 AM		6/26/2026
5:00 PM		3840Line Section 34 Maintenance DownloadView Map
Maint6/1/2026
1:41 PM		6/3/2026
9:00 AM		6/3/2026
5:00 PM		3839Charbonneau Compressor Station-Deliveries to NBPL DownloadView Map
Maint5/29/2026
10:22 AM		8/4/2026
9:00 AM		8/4/2026
9:00 PM		3838Tioga Compressor Station Annual ESD & Maintenance DownloadView Map
Maint5/29/2026
9:36 AM		6/15/2026
9:00 AM		7/31/2026
5:00 PM		3837Charbonneau Compressor Station-Deliveries to NBPL DownloadView Map
Maint5/29/2026
8:58 AM		4/15/2026
9:00 AM		5/30/2026
5:00 PM		3836Golva Compressor Station (Line Section 26) DownloadView Map
Maint5/28/2026
10:01 AM		6/4/2026
9:00 AM		6/4/2026
5:00 PM		3835Tioga Compressor Station (Elkhorn Creek Delivery) DownloadView Map
Maint5/28/2026
9:51 AM		6/8/2026
9:00 AM		6/9/2026
7:00 PM		3834Tioga Compressor Station (Elkhorn Creek Delivery) DownloadView Map
Maint5/26/2026
4:20 PM		5/18/2026
9:00 AM		5/26/2026
5:00 PM		3833Saco Compressor Station DownloadView Map
Maint5/22/2026
12:55 PM		5/18/2026
9:00 AM		5/26/2026
5:00 PM		3832Saco Compressor Station DownloadView Map
Maint5/21/2026
10:07 AM		5/22/2026
9:00 AM		6/12/2026
5:00 PM		3830Hardin Compressor Station DownloadView Map
Maint5/18/2026
1:48 PM		6/10/2026
9:00 AM		6/10/2026
5:00 PM		3828ElkHorn Creek Compressor Station - ESD Test DownloadView Map
Maint5/18/2026
1:26 PM		6/2/2026
9:00 AM		6/2/2026
5:00 PM		3827Spring Creek Compressor Station - ESD Test DownloadView Map
Maint5/14/2026
10:33 AM		6/16/2026
9:00 AM		6/17/2026
5:00 PM		3824Sandstone Creek Compressor Station DownloadView Map
Maint5/8/2026
9:54 AM		6/1/2026
9:00 AM		6/5/2026
5:00 PM		3821Line Section 2 (Dickinson - Bismarck) Hydrotest DownloadView Map
Maint5/7/2026
1:46 PM		6/8/2026
9:00 AM		7/10/2026
5:00 PM		3820Line Section 22 Elk Basin - Billings DownloadView Map
Maint4/24/2026
11:38 AM		6/1/2026
9:00 AM		6/5/2026
5:00 PM		3816Line Section 16 (Cabin Creek - Hathaway) Hydrotest DownloadView Map
Maint4/23/2026
11:46 AM		5/27/2026
9:00 AM		5/27/2026
5:00 PM		3815Charbonneau Compressor Station ESD and Maintenance DownloadView Map
Maint4/14/2026
3:47 PM		4/15/2026
9:00 AM		5/30/2026
5:00 PM		3810Golva Compressor Station (Line Section 26) DownloadView Map
Maint4/14/2026
9:32 AM		6/1/2026
9:00 AM		6/5/2026
5:00 PM		3808Worland Compressor Station DownloadView Map

*** All references to Time are stated for the Central Time Zone.

All posted impacts to capacities are based on WBI Energy Transmission’s best estimates. Actual impacts may vary from the posted impacts depending on system operating conditions, weather and other factors. WBI Energy Transmission reserves the right to revise all postings. If you have any questions regarding this posting, please contact a Transportation Services Analyst at 701-530-1630.


Impact Ranking Key for PSO
Impact Level / Color Shading Impact Description
Low Impact (None) Allocations to Transportation are unlikely.
Potential Impact (Blue) Potential impact to Receipts and/or Deliveries.
High Impact (Yellow) Receipts, Deliveries and Throughput Allocations are likely.
Service Outage (Red) Allocations happening / Force Majeure.
If you have any questions or comments regarding this information, please e-mail Market Services.
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