A single natural gas pipeline generally cannot support both the 440 MW Mullin Creek #1 generating station and a separate 600 MW White Cloud Acres data center/power facility simultaneously unless it has been specifically engineered with the large-diameter sizing, high operating pressure, and volume capacity to handle a combined load of over 1,000 MW. [1, 2]
Key Details
- Project Separation: The Mullin Creek #1 plant is a 440 MW simple-cycle gas turbine facility developed by Evergy Missouri West, while White Cloud Acres is a separate $6B+ infrastructure and AI data center project paired with its own co-located natural gas power generator developed by Scale Microgrids. [1, 2, 3, 4]
- Location Proximity: Both projects are sited in Nodaway County, Missouri, near the intersection of U.S. Highway 71 and 340th Street (close to the Mullin Creek substation area). [1, 2, 3]
- Capacity Demands: Combined, a 440 MW plant and a 600 MW generation load require massive continuous volumes of natural gas. Standard lateral gas pipelines built for a single medium-scale peaker plant do not possess the thermal or flow capacity for an additional 600 MW load without major pipeline upgrades or dedicated parallel feeder lines. [1, 2]
- Interconnection Plans: Scale Microgrids has outlined plans for its power generation component to interconnect with the Southwest Power Pool (SPP) via a new high-voltage substation tied to the Mullin Creek area, though utility and gas-supply infrastructure must scale independently to serve both footprints safely.
To power the 600 MW White Cloud Acres AI data center entirely through the grid, the site would need to pull a continuous capacity of 600 MW from the Southwest Power Pool (SPP) transmission system. [1, 2]
Power Allocation Dynamics
- The Data Center Demand: The data center campus itself requires up to 600 MW of steady-state electric load to run its AI computational infrastructure and cooling equipment. [1, 2]
- Net-Zero Grid Draw Goal: Scale Microgrids’ primary engineering strategy is to balance this load locally. They have applied for permits under White Cloud Generating to build a co-located 600 MW simple-cycle natural gas facility right next to the data center. [1, 2, 3]
- The Interconnection Hookup: The on-site generator is designed to connect directly into the SPP system at the Mullin Creek substation using a newly constructed high-voltage substation. If the gas generator runs at peak output, it offsets the data center’s demand, resulting in a net-zero load draw from the broader regional grid. [1]
- The Backup/Alternative Scenario: If the on-site gas generation is constrained, down for maintenance, or if pipeline capacity fails to feed it, the entire 600 MW load would have to be pulled straight from the SPP grid line to keep the data center online.
Drawing 100 percent of the power for the 600 MW White Cloud Acres data center directly from the Southwest Power Pool (SPP) transmission grid without relying on its co-located natural gas facility would trigger significant reliability, infrastructure, and regulatory impacts.
Grid Reliability & Capacity Strain
Drawing a continuous 600 MW load from the grid creates a massive new localized point of demand.
- Capacity Squeeze: While SPP has an accredited generating capacity of over 65,000 MW, regional peak load is already surging rapidly and is projected to jump from 56 GW to over 105 GW in the next 10 years due to data center expansions. A sudden 600 MW net draw heavily eats into local reserve margins. [1, 2, 3]
- Resource Congestion: SPP heavily relies on intermittent wind power for its overall energy mix (accounting for over 36% of its actual energy production). If the grid must supply 100% of this 600 MW during periods of low wind or extreme winter weather, SPP would have to fire up older, more expensive fossil-fuel peaker plants or risk regional grid stability. [1, 2]
Regulatory Barriers: The HILLs & CHILLS Policies
Because of the massive strain that large data centers place on transmission grids, SPP has strictly overhauled how they process these requests:
- The HILLs Process: SPP enforces a High Impact Large Load (HILL) policy specifically designed to fast-track the study of data centers. If a facility requests 100% power from the grid, it triggers intense 90-day system impact and stability modeling to detect grid constraints before interconnection is approved. [1]
- The CHILLS Restriction: SPP recently introduced the Conditional High Impact Large Load Service (CHILLS). Under these terms, if a massive load wants to connect to the grid, it is often granted non-firm long-term service and requires supporting generation (like White Cloud Acres’ proposed co-located behind-the-meter gas generator) to be commercially operational first. If that generator doesn’t run, the grid can curtail the data center’s power to protect residential customers. [1]
Local Infrastructure Bottlenecks
- Substation Thermal Limits: The local transmission lines and the Mullin Creek substation area were not originally built to export 600 MW of power continuously to a single end-user. Even if SPP has the power elsewhere in its footprint, the physical transmission lines in Nodaway County would experience extreme congestion and thermal limitations trying to deliver it.
- Upgrade Costs: For a 100% grid draw to be viable, hundreds of millions of dollars in network upgrades—including higher-voltage lines and massive transformers—would have to be constructed, delaying the data center’s timeline significantly.
A single standard natural gas transmission pipeline (typically measured in billion cubic feet per day, or Bcf/d) can support roughly 5 to 6 gigawatts (GW) of electrical power generation capacity when fed into modern combined-cycle gas turbine (CCGT) power plants.
Key Metrics and Capacity Details
- Volume to Energy Conversion:
- 1 billion cubic feet (Bcf) of natural gas contains roughly 1.03 trillion BTUs of energy.
- At a standard modern combined-cycle plant heat rate (~7,500 BTU per kWh), 1 Bcf/d of gas flow can continuously support roughly 5.7 GW of electrical generation capacity.
- Typical Pipeline Capacities:
- Smaller/Regional Pipelines: Deliver around 0.5 to 1.0 Bcf/d, which can support roughly 2.8 to 5.7 GW of power generation.
- Large Interstate/Major Corridors: Deliver 1.5 to 2.5+ Bcf/d (such as major Permian takeaway or regional expansion projects like the Transwestern or Mountain Valley pipelines), which can support 8.5 to over 14 GW of electricity production. [1, 2, 3]
- Real-World Scale:
- Natural gas provides nearly 40% of total U.S. electricity generation.
- A single large pipeline carrying 2 Bcf/d supplies enough fuel to run multiple large-scale power plants simultaneously, easily powering millions of homes or rapidly expanding energy-heavy loads like data centers
These comments are from Google’s AI Gemini