Michigan Senate Bills Would Force 20 MW Data Centers Into 20-Year
- Data Centers Regulatory State & Local Regulation
Marin Holt
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- 6 minutes read
- Power threshold: 20 MW
- Renewable requirement: 90% renewable
- Utility contract term: 20-year
- Water cap per facility: 2 million gallons/day
Michigan Senate Democrats introduced a package of bills on June 18 that would force any data center drawing more than 20 megawatts to sign a 20-year power contract with its utility and supply 90% of that load from renewable energy. The legislation, led by Sens. Rosemary Bayer of West Bloomfield and Kevin Hertel of St. Clair Shores, also caps a single facility’s water use at 2 million gallons per day and bars utilities from passing water-infrastructure costs to residential ratepayers.
The bills target the wave of large computing campuses now chasing Michigan power, including projects tied to Oracle and Related Digital. Under SB 1047, a qualifying data center would commit to two decades of utility payments, a structure meant to keep grid build-out costs from landing on existing customers if a tenant leaves. Companion measures condition Michigan Public Service Commission approval on union apprenticeships, require legally binding community benefit agreements, and ban public officials from signing most nondisclosure agreements about data center deals.
Before and After
Michigan’s 2024 data center law offered sales-tax exemptions with few strings attached. The new package reverses that posture: instead of incentives, it sets a 20-megawatt trigger above which renewable sourcing, long-term cost recovery, water reporting, and labor standards become conditions of doing business. Facilities using 550,000 gallons of water a day or more would need a state permit, and annual MPSC reports on data center energy and water consumption would begin in 2027.
Enforcement Reality
The rules are proposals, not law. To take effect they must clear the Democratic-controlled Senate and the Republican-led House, a split that stalled earlier versions introduced in December 2025. Even if passed, enforcement would run through the MPSC’s contract-approval power: a data center that refused a 20-year commitment or the 90% renewable threshold would be denied the utility rate agreement it needs to operate. Collateral and community-benefit requirements in the package would give the state recourse if a facility closed early.
Critical Perspective
The package would force any data center above 20 MW to source 90% of its load from renewables and lock in a 20-year utility contract, yet Michigan still generates more than half its electricity from natural gas and coal, making round-the-clock 90% renewable supply a far harder promise than the headline implies. Virginia, home to the world’s largest data-center cluster in Loudoun County, has watched Dominion repeatedly delay coal retirements precisely because hyperscale load grew faster than firm clean capacity could be added. The 2 million gallon per day water cap and 550,000 gallon permit trigger also push operators toward air cooling, the same route Google chose for its Texas Meitner campus to avoid water withdrawals entirely. If Michigan cannot build enough firm renewable capacity to meet a 90% standard over a 20-year term, will the mandate simply send these projects and their tax base to states with looser rules?
Why It Matters
Twenty-three states have approved large-load tariffs to handle data center demand, but most stop at cost allocation. Michigan’s package goes further, attaching renewable-energy and labor conditions to grid access. If it advances, it becomes a template other states weigh as AI campuses compete for megawatts faster than utilities add supply.
Sources
- Bridge Michigan: Michigan Senate Democrats push for stricter data center energy, worker rules (June 18, 2026)
- WKAR / Michigan Public Radio Network: New data center regulations proposed in the Michigan Senate (June 18, 2026)
- WSBT: Michigan Senate Democrats put forth several bills to regulate data centers (June 18, 2026)
