I posted this a while ago bit I want to add to it to show why this is a problem...
Who Needs Electricity
Just and reasonable rates has been the standard for utility regulation since public utilities became regulated (technically, it's "safe and adequate service at just and reasonable rates"). That isn't some new design or framework that's meant to insulate data centers at the expense of residential customers.
My issue with the linked article is its subheading "Missouri electricity bills expected to keep increasing due to data centers." Show me the data, because correlation != causation. Just because there are more data centers and rates are increasing doesn't directly link the two, especially given that the expected generation needs are still a decade or more off. Disconnections don't signify that, because construction of a data center doesn't directly impact rates. And unless a rate increase hit in September, a near term jump in disconnections is more likely to be related to economic conditions than rates, since they don't change overnight. Presuming Missouri still has traditional regulation, the utility has to go before the state's commission to get approval for a rate increase, and those cases can take months if not years. They also typically only include things already built (if the rate case uses historical data, as is traditionally the case), or near-term, fully expected to be built facilities during the time-period used to establish rates (if the case is using a future test year). No regulated utility in the country is able to charge higher rates now for a generator that won't even start construction for 10 years.
Show me the link. Consumer Advocate offices nationwide constantly fret and worry about industrial costs being passed on to residential customers, which fair enough, that's both their jobs and a worthy goal. Traditionally, however, commercial and industrial rates tend to subsidize residential customers already when compared to how the underlying cost of service studies would allocate costs. Utility commissions are loathe to increase rates on residential classes already, and they often mitigate "rate shock" for residences more than other classes.
The article also ignores that many public utilities don't want to be on the hook for unused generation anymore than their residential customers do, and they build in safeguards with their large industrial users in their facilities and electric service agreements. A number of states, including Minnesota, have instituted laws forbidding cross-subsidization, and PUCs have similarly approved rates that include similar protections.