Nessel Demands 85% Cut to DTE Gas Rate Hike

Michigan Attorney General Dana Nessel wants the Michigan Public Service Commission to reject the vast majority of DTE Energy’s proposed natural gas rate hike, filing testimony last week that calls for an 85% reduction to what she describes as a “bloated, unjustified” request.

DTE filed for a $237.5 million increase in its natural gas rates, a move that would drive up monthly bills for hundreds of thousands of households across Metro Detroit and Southeast Michigan. Nessel’s office countered by arguing the utility can only justify roughly $35.6 million of that ask. For the average residential customer, the difference between those two numbers shows up directly in how much they pay to heat their home.

If the MPSC were to approve DTE’s full request, analysts estimate the typical residential customer could see their annual gas bill climb by $150 to $200 or more, depending on usage. Nessel’s proposed alternative would limit that increase to a fraction of that amount, keeping more money in the pockets of Detroit-area families already dealing with elevated costs across nearly every household budget line.

What DTE Is Asking For

DTE Energy’s gas division serves roughly 1.3 million customers in Michigan, with a heavy concentration in Metro Detroit. When a utility wants to raise rates, it files a formal rate case with the MPSC, the state body that regulates investor-owned utilities. DTE submitted its current gas rate request earlier this year, citing costs associated with infrastructure upgrades, system maintenance, and capital investments. (See also: Google DTE Energy Data Center Deal Southeast Michigan)

The $237.5 million figure represents what DTE says it needs to recover from ratepayers to fund those expenditures and maintain what it characterizes as a reliable, safe natural gas distribution system. Rate requests of this scale are not unusual for large utilities, but the size of this particular ask drew immediate scrutiny from consumer advocates and the Attorney General’s office.

Nessel’s filing argues that DTE’s justification for the bulk of that $237.5 million does not hold up under examination. Her office, which routinely intervenes in utility rate cases on behalf of Michigan consumers, reviewed DTE’s cost submissions and concluded that the company inflated the request significantly beyond what its actual needs warrant.

Why Nessel Calls It ‘Bloated’

The Attorney General’s use of the word “bloated” is deliberate. It signals that her office believes DTE padded the request with costs that are not legitimately tied to ratepayer-benefiting improvements, or that represent expenses the company should absorb through its own efficiencies.

Utility rate cases frequently turn on questions of “used and useful” investment, meaning regulators examine whether the capital DTE spent actually went toward infrastructure that serves customers. Nessel’s team scrutinizes those submissions line by line, looking for capital projects that haven’t been completed, costs that belong to DTE’s shareholders rather than its ratepayers, and operational expenses the company could reduce with better management.

The Attorney General’s office has challenged DTE rate requests before, both for its gas and electric divisions. This intervention follows a pattern of pushback from Nessel’s office against what consumer advocates describe as a utility that has repeatedly sought to shift costs onto customers while delivering service that does not match the rates charged. DTE’s electric division has faced sustained criticism over outage frequency and duration in Metro Detroit, and some of that frustration carries into how regulators and advocates approach the company’s gas rate filings as well.

Nessel’s filing doesn’t just trim the request around the edges. An 85% reduction is a near-total rejection of DTE’s position, and it sends a signal to the MPSC that the Attorney General believes the utility approached this rate case without adequate discipline or justification.

How the MPSC Process Works

The Michigan Public Service Commission operates as a quasi-judicial body. When DTE files a rate case, it opens a formal proceeding in which multiple parties, including the Attorney General, the MPSC staff, and various intervenors such as industrial customers and low-income advocacy groups, can file testimony and challenge the utility’s claims.

After testimony is submitted, the case typically moves to an evidentiary hearing before an administrative law judge. The judge issues a proposal for decision, and then the full three-member MPSC commission votes on final rates. The entire process usually runs 10 to 12 months from the date of filing, meaning new rates in this case would most likely take effect in late 2026 or early 2027, though the MPSC can set interim rates that go into effect earlier under certain conditions.

In practice, rate cases often end in negotiated settlements between DTE and the various parties before reaching a full hearing. Those settlements require MPSC approval and can move faster than a fully litigated case. Whether this case moves toward settlement or goes the full distance will depend on how much ground DTE is willing to concede.

The MPSC is not required to accept any party’s testimony wholesale. It weighs the evidence from all sides and sets rates it finds reasonable based on the record. Historically, the commission has approved rate increases that fall somewhere between what the utility requests and what consumer advocates argue is justified, though recent proceedings have shown commissioners willing to push back harder on utility cost claims.

The Stakes for Metro Detroit Households

This is a pocketbook issue, full stop. Metro Detroit households that heat with natural gas have already absorbed years of rate increases across DTE’s electric and gas divisions. The region’s median household income leaves limited cushion for recurring utility cost hikes, and fixed-income residents, renters in older housing stock, and small businesses face particular pressure.

A $237.5 million rate increase doesn’t land equally. Customers with older, less efficient homes pay more because they use more gas to maintain the same temperature. Renters often have no control over their heating systems or insulation, leaving them exposed to rate increases without the ability to offset them through efficiency upgrades. Any increase the MPSC approves will show up in bills every month, not just in winter.

Michigan has utility assistance programs, including the Low Income Self-Sufficiency Plan and federal LIHEAP funds, that help some lower-income households manage energy costs. But those programs have limited capacity and don’t reach every household that struggles with high bills. Keeping rates as low as the evidence justifies is the most direct protection most ratepayers have.

DTE’s Position

DTE Energy had not issued detailed public rebuttal testimony responding to Nessel’s specific arguments at the time of publication, though the company will have the opportunity to do so as the case proceeds. DTE has consistently defended its rate requests as necessary to fund the infrastructure work it says is required to maintain safe and reliable gas delivery across its service territory.

The company’s general posture in rate cases is to argue that its proposed investments are prudent, that they benefit customers, and that the returns it seeks are in line with what regulators have approved for comparable utilities. DTE will almost certainly contest Nessel’s characterization of its filing as bloated and will present its own expert witnesses to defend its cost methodology before the MPSC.

It is also worth watching whether DTE seeks to negotiate a partial settlement before this case reaches a full hearing. The company has an incentive to avoid prolonged litigation and the reputational cost of a public fight over rate increases at a time when its relationship with Metro Detroit customers is already strained.

What Happens Next

The MPSC docket for this case will continue to fill with testimony from all parties over the coming months. The MPSC staff will issue its own independent analysis, which often carries significant weight with commissioners. Intervening parties representing low-income customers and industrial users will add their perspectives to the record.

Ratepayers who want to track the case can follow MPSC docket filings through the commission’s public portal. Public comment opportunities typically arise during the hearing phase, giving residents a direct channel to put their concerns on the record.

Nessel’s filing is an early and aggressive marker in what will be a months-long proceeding. The 85% reduction she seeks is unlikely to be the final number, but it anchors the consumer advocacy position firmly and forces DTE to defend every dollar of its request against serious, documented scrutiny. For Metro Detroit households, the outcome of this case will show up in their gas bills for years.