75 megawatts: The demand threshold that triggers higher utility bills

Evergy sent an email to its customers on Monday explaining how the utility intends to handle the rising cost of massive power users. The core issue is who pays for the infrastructure needed to support facilities that draw enormous amounts of electricity. The company states that these measures are designed to keep regular residential and small business rates stable. However, the rules apply to a specific technical metric rather than just the type of business involved.

The new tariffs target what Evergy calls large load customers. This category includes any user with a peak electric demand of more than 75 megawatts. A data center is one example, but a large manufacturing plant or a logistics distribution center can also fall into this group. For perspective, the Nebius project in Independence, Missouri, will require more than 800 megawatts when it is fully operational. That figure is more than ten times the threshold that triggers the new financial obligations.

These rules did not start with Monday's email. State regulators have already approved the framework. In Kansas, the Corporation Commission approved the rate plan on November 6, 2025. The decision was part of a unanimous settlement negotiated by Evergy, ratepayer groups, environmental organizations, the Data Center Coalition, Google, and several school districts. In Missouri, state lawmakers passed Senate Bill 4 in 2025, which required the Public Service Commission to adopt rates that ensure large load customers cover their own infrastructure costs. Evergy's Missouri tariffs took effect in March, while Ameren Missouri's took effect in January.

Under the new structure, qualifying customers face several distinct financial requirements. They must pay electric rates that are higher than those for other large commercial and industrial customers. They are responsible for 100% of the costs for any infrastructure, such as substations or transmission lines, built solely to serve them. They must agree to a minimum monthly bill, even in months when their usage drops. They must provide collateral equal to two years of their minimum monthly bills. This collateral protects other customers if a project is delayed, downsized, or abandoned. Finally, they must sign long-term contracts of at least 12 years. These contracts include an option for an additional five-year phase-in period, creating a potential commitment of up to 17 years. Early exit triggers fees and additional penalties for shorter notice.

Kansas Corporation Commission staff estimated in testimony that large load customers will pay 7% to 10% more than Evergy's existing industrial customers under this plan. The distinction between states matters for local politics. Missouri's Legislature required regulators to act through legislation. In Kansas, Evergy proposed the plan directly and sought approval from the commission. This difference explains why the rules are already active in both states despite different legal paths.

The local context adds complexity to the discussion. In Independence, the city council approved tax incentives for the Nebius data center. Voters later ousted two council members and recalled another over their support for those incentives. In Gardner, developer Beale Infrastructure withdrew its application in May after hundreds of residents opposed the project at a city council meeting. The city stated it would not offer incentives. Neither Independence nor Gardner is served by Evergy. Both cities have public, city-run electric utilities. State regulators only have authority over investor-owned utilities like Evergy, Ameren, and Liberty Utilities. Public utilities and electric cooperatives fall outside that jurisdiction.

The Independence City Council recently passed new restrictions on future data center development. These include setback requirements and a cap on generator testing hours. The rules do not apply retroactively to the Nebius project, which broke ground in May. The contract between the city and Nebius requires the data center's power to come from a new, privately funded power plant. Evergy is currently working to line up an interview. The company has also reached out to Independence and other public utilities in the area to determine if they are considering similar city-wide rules.