Queue Intelligence · Playbook
How we ship SPP large-load interconnection under the DISIS framework, across 14 states, through the country's largest coal-to-data-center conversion opportunity, and with cross-pool Affected System awareness at the MISO, ERCOT, and WECC seams.
The SPP context
SPP is structurally different from ERCOT, PJM, and MISO. It is smaller. It is more concentrated. It sits in the middle of the largest coal retirement wave in US history. And its seams with neighboring pools create Affected System exposure that few developers take seriously until an impact study tells them they should have.
SPP queue report
SPP corporate
EIA Form 860
SPP OATT
Active deadlines we're tracking
How we run an SPP filing
SPP's queue reform uses a DISIS framework with shared clusters and defined study windows. Your project must file within the window and satisfy financial readiness and site control requirements.
DISIS cycles are semi-annual with strict deposit schedules.
SPP has 21+ GW of coal retirements scheduled by 2030 across Kansas, Oklahoma, Missouri, and Arkansas. Many of the best candidate sites for data center conversion sit near those retirements. We overlay retirement schedules and interconnection capacity together.
Coal-to-DC conversion is the dominant SPP opportunity.
SPP intersects with MISO, ERCOT, and WECC at multiple seams. Large-load projects near seams trigger Affected System studies that can add months to the timeline. We pre-model the Affected System exposure.
The Oklahoma / Texas seam and the Missouri / Illinois seam are particularly sensitive.
SPP's Western Interconnection expansion is integrating the Basin Electric and WAPA Upper Great Plains footprints. The rules for projects in those areas are evolving. We track the integration milestones.
Projects in North Dakota, South Dakota, Nebraska, and Montana are in the transitional zone.
What matters
SPP's DISIS framework replaces the legacy serial-study process with shared clusters. Each cycle groups similar projects, runs coordinated studies, and allocates upgrade costs across the cluster. The trade-off: tighter schedules and less flexibility for individual projects.
SPP sits at the heart of the US coal retirement wave. Most of the best coal-to-DC conversion candidates are in SPP territory — and most of the SPP queue applicants are chasing them. Competition for the best POIs is fierce.
SPP's ongoing integration of WAPA Upper Great Plains and Basin Electric is expanding the footprint westward. Projects in North Dakota, South Dakota, Nebraska, and Montana fall under transitional rules that will normalize by 2027.
SPP's seams with MISO, ERCOT, and WECC create Affected System exposure for projects near the boundary. A project in eastern Oklahoma that connects at an SPP bus can still trigger a MISO or ERCOT study if the flow patterns demand it. We flag seam risk in the initial screen.
Features
Every 345 kV and 500 kV bus in the SPP footprint, including the Western Interconnection integration territory. Nightly queue and base case ingestion.
SPP has the country's highest concentration of retiring coal-to-data-center candidates — Kansas, Oklahoma, Missouri, Arkansas. We overlay retirement schedules, remediation status, and POI voltage on every site.
Live view of each DISIS cycle, open windows, and project-by-project status within the current cycle. Readiness-gate alerts and deposit scheduling.
For projects in the transitional Western Interconnection integration zone, we maintain a separate tracker of integration rules, timing, and the WAPA / Basin Electric process conventions.
SPP's seams with MISO, ERCOT, and WECC are all meaningful for large-load studies. We pre-model the Affected System exposure before the impact study is ordered.
SPP's aggressive renewable interconnection is reshaping base cases in ways that matter for load studies. We update the assumptions nightly so your project doesn't rely on a stale case.
“The footprint is smaller than PJM or MISO, but the coal retirement opportunity is denser. The winners will be the operators who file into DISIS with a POI that already carries the transmission headroom from a retired plant next door.”
SPP playbook
We'll pull the candidate list of retiring SPP coal plants against your target MW and upgrade budget. Delivered in 72 hours with a regulatory pathway preloaded.