Heat Pumps Could Cut Michigan Power Rates 27%
A clean energy think tank says winter heat pump use could lower residential electricity prices by using unused grid capacity.
Updated on Nov. 2, 2026 in Utilities
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Clean energy think tank RMI estimates Michigan could lower residential electricity rates by up to 27% if it adopts heat pumps, citing room for 3.6 million units on the existing grid. Across the 24 states and Washington, D.C. studied, RMI projects an average 13% residential price reduction.
Why it matters
Electricity rates cover poles, wires, transformers, power plants, and utility profits, so spreading those costs across more winter kilowatt-hours could lower per-unit prices without new grid capacity. Researchers lacked utility-specific data needed to refine these estimates, and the analysis did not calculate how individual household bills would change.
RMI's modeling found Michigan has room for 3.6 million residential heat pumps, and the average 13% reduction equals roughly $200 per customer annually. The study did not determine how much individual bills would change for households that switch from gas heating.
The players
Parth Vaishnav
A researcher who co-authored a 2024 study finding that replacing gas heating with heat pumps could increase some households' annual bills by more than $1,000.
RMI
A clean energy think tank that examined 24 states and Washington, D.C. to assess unused winter grid capacity for heat pump adoption.
The details
Heat pumps could use existing grid capacity during winter, with oil and gas heaters potentially covering the coldest hours, though some units rely on electricity-hungry resistance backup heat that limits how many systems the grid can support. A 2024 study co-authored by Parth Vaishnav found replacing gas with a heat pump could raise some households' annual bills by more than $1,000 at the time's fuel prices.
Timeline
2024: Vaishnav co-authored study found some households could see bill increases after switching from gas to heat pumps.
- 2026-11-02
RMI published its heat pump grid capacity study.
Industry Landscape
RMI's analysis treats unused winter grid capacity as a lever for lowering rates, a different approach from the Massachusetts winter rate design that produced at least $37 million in savings for heat pump customers. Illinois modeling that maximized existing grid capacity relied on a mix of 79% hybrid systems and 21% heat-pump-only systems.
Michigan households that heat with gas could face higher bills in some cases after switching to heat pumps, according to a 2024 study. A broader grid-based rate reduction would depend on utility-specific data that the RMI analysis did not include.
The takeaway
Households weighing a heat pump should look beyond system-wide averages and examine how their own utility prices winter electricity use before assuming a bill reduction.
Further reading
Explore more utility industry coverage for context on how grid capacity shapes electricity pricing.
Source note: This article includes information reported by The Cool Down.
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