Consumers Energy residential VPP economics

Consumers Energy is Michigan’s largest utility, serving about 1.9 million electric customers across most of the Lower Peninsula outside metro Detroit. It owns generation and wires and sits in Zone 7 of MISO, the Midcontinent Independent System Operator, which runs the wholesale market and a seasonal capacity auction. The MPSC approves its rates in rate books such as rate book D, and its long-term plans in an integrated resource plan (IRP).

Every deep dive on this site has one feature that changes how its economics read. In most territories, the question is what a utility’s battery program pays. In Consumers Energy territory there is no battery program to price, and the reason is the regulator, not the utility’s reluctance.

Consumers proposed utility-owned home battery and bring-your-own battery pilots; the MPSC rejected them for lacking third-party involvement (MPSC order). Then, on March 27, 2026, the commission told Consumers that future grid investments failing to account for VPPs “may be disallowed” (Environmental Law & Policy Center; Michigan Public). Consumers’ 2026 IRP raises its VPP capability from about 2,100 MW to 3,500 MW, largely through EV load shaping and demand response, alongside 3,300 MW of new storage by 2040 (SEPA’s Q3 2026 VPP policy review). An MPSC straw proposal on distributed energy and VPPs followed in August (The Detroit News).

For now, that leaves a home battery with two sources of value: the small daily spread in the default rate and the larger reward on a handful of event days.

An event kWh is worth roughly 20 times an ordinary one. But events are few: Peak Time Rewards runs June 1 to August 31, and the utility does not publish a fixed count. We assume 10 event days and test 20. The rate book confirms the pieces: power supply of 15.19¢ on-peak and 10.40¢ off-peak plus 9.33¢ of distribution on the Summer Rate, a $5 monthly credit for AC Peak Cycling, and the 50¢ and $1 event prices (MPSC rate book D).

The thermostat program is the one a household can join without buying anything. Events run up to four hours on summer weekdays, and participants can opt out (compare-programs page). EV charging is paid in two stages: a rebate on a Level 2 charger, then $10 a month for a year for charging overnight (Smart Charging Incentive terms). The 2026 IRP leans on that overnight and daytime charging to reach its VPP target.

Stacking at Consumers means combining a rate option with a device program. There is no residential aggregator program that sells to MISO, so there is no market payment to add.

Stacking needs care, depending on M&V methodology. Peak Time Rewards measures kWh shifted at the whole-home meter against a baseline, while the thermostat program counts device events. A home doing both is measured twice for one afternoon, so confirm how the utility settles overlapping events.

Take one hypothetical home on the Summer Rate with a new Powerwall 3 at $15,647, the cost our Residential VPP Calculator uses. It charges overnight and delivers 10 kWh into the 2–7 p.m. window on 85 summer weekdays, and 5 kW for 4 hours on each event day under Peak Time Rewards. Outside June to September the rate is flat at 17.6¢, so the battery earns nothing then except backup.

The daily spread alone recovers about 1%. Shifting is worth about $22 a year. Peak Time Rewards adds about $100 at 10 event days, for about 7% over ten years, and about 13% in a summer with 20 event days.

Backup is the real case. Michigan’s outage history is why households buy batteries here, and the state raised its outage credit to $44 in 2026. Until a battery program opens, the economics are a resilience purchase with modest event income.

The 2026 IRP and the MPSC’s warning point the same way: more of Consumers’ future capacity is meant to come from customer devices (IRP executive summary). A battery program with third-party aggregators, the design the commission asked for, would change the case study above more than any rate change.

The future of VPP to grow at scale will depend on multiple assets in unison at any given site: thermostat, EV charger, battery and solar, dispatched together and measured as one resource. In Michigan, the thermostat and EV programs run today, but each pays for one device on its own terms.

Related: the Consumers Energy C&I deep dive, and the Ameren Illinois deep dive for another MISO utility with hourly pricing. To run other equipment, use the Residential VPP Calculator.