Summary

  • The Michigan Public Service Commission conditionally approved a 20-year electricity contract for Google’s planned 1.0 GW data centre in Van Buren Township.
  • The deal sets minimum billing demand at 80% of contracted demand and requires an early-exit payment covering at least 15 years of minimum monthly charges.
  • DTE Electric says the arrangement could benefit other customers by $1.7 billion over 20 years. That figure is a forecast; the Commission attached reporting and cost-allocation conditions to the claim.

A gigawatt gets a floor; the exit gets a bill

A 1.0 GW data-centre load is easy to announce. The harder question is who pays when the building uses less electricity than its contract reserves—or leaves before the grid investment has been paid back. Michigan’s answer is a 20-year Primary Supply Agreement with an 80% minimum billing demand. Google owes at least that share of its contracted demand each billing cycle, even when actual use falls below it.

The comparison is unusually concrete. DTE Electric’s ordinary D11 large-load rate generally carries a five-year contract and a 50% to 65% minimum billing range. The special agreement stretches the term to 20 years, raises the floor to 80%, and requires an early-termination payment equal to at least 15 years of minimum monthly charges. Credit and collateral provisions sit beside those terms. The data-centre customer keeps room to use less; the contract keeps the meter from turning that option into a free one.

Four power figures, four different jobs

The companion Clean Capacity Accelerator Agreement puts new resources on a separate ledger. Google funds DTE’s development of up to 1,600 MW of renewable energy and 480 MW of battery storage. DTE owns and operates those facilities. Google also transfers 300 MW of capacity credits to DTE without charge, helping the utility demonstrate that it has enough resources to serve customers.

The 1,000 MW facility load, renewable projects, storage and capacity credits are not interchangeable units. Add them together and the arithmetic looks impressive; it answers no useful question about the data centre’s demand or delivered electricity. Each figure belongs to a different contractual job: load, generation, storage or resource adequacy.

DTE expects service to begin in December 2027 and the site to reach maximum load by December 2028. Those dates give the contract a real operating clock. Until then, a reservation is still a reservation.

The $1.7 billion number is the part that must earn its keep

DTE estimates that the contracts could lower costs for other customers by about $1.7 billion over their 20-year life, because Google would carry a larger share of fixed system costs. The Commission found an opportunity for customer benefit and approved the agreements with conditions. The $1.7 billion remains DTE’s estimate, not savings already credited to customer bills.

That distinction is the commercial centre of the case. The minimum payment, termination charge and resource-funding obligations are contractual terms. The customer-benefit figure depends on how costs and revenues develop over time. The Commission says it will monitor the costs attributed to the data-centre load and may reopen the case if projected affordability benefits disappear or costs threaten to shift to other DTE customers.

The order adds practical levers. Google’s contribution to needed electric infrastructure upgrades has no cap. DTE must compare resource needs with and without Google’s load—and with and without other large loads—in future planning filings. It must propose cost allocation and rate design for future large-load connections in its next rate case. The agreement is not a siting permit; the Commission’s authority here is over the utility-service terms and who pays for them.

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