Residents with heat pumps in four Massachusetts towns will soon pay hundreds of dollars less for their electricity over the winter, thanks to a new pricing approach advocates hope will become a model for utilities across the state.
State regulators in June approved a plan by utility Unitil to lower the distribution portion of the electric rate from November to April for customers who use heat pumps, the first time this pricing structure will be used in the state. It’s a shift the company hopes will make it more financially feasible for residents of its service area to choose the higher-efficiency, lower-emissions heat source.
“We asked, is there a way we can structure the rates that would be fair and help customers adopt a heat pump?” said Unitil spokesman Alec O‘Meara. “We recognize that energy affordability is very important to our customers.”
A balancing act
Electric heat pumps are a major part of Massachusetts’ strategy for reaching its goal of going carbon-neutral by 2050. Today, nearly 80% of homes in the state use natural gas, oil, or another fossil fuel for space heating. Looking to upend that ratio, the state has set a target of having heat pumps in 500,000 homes by 2030.
One of the major obstacles to this goal is cost. To address part of this barrier, Massachusetts offers rebates of up to $16,000 for income-qualified homeowners and $10,000 for higher-income residents for heat pump equipment.
The cost of powering these systems though, can be its own problem. Natural gas prices have been trending precipitously downward for the past two years and Massachusetts has long had some of the highest electricity prices in the country. This disparity can be particularly stark in the winter, when consumers using natural gas for heating get priority, requiring the grid to lean more heavily on dirtier, more expensive oil- and coal-fueled power plants, said Kyle Murray, Massachusetts program director for climate and energy nonprofit Acadia Center.
So switching from natural gas to an electric heat source — even a more efficient one like a heat pump — doesn’t always mean savings for a consumer, especially those with lower incomes.
“Electric rates are disproportionately higher than gas rates in the region,” Murray said.
Unitil’s new winter pricing structure is an attempt to rebalance that equation. In New England, electric load on the grid is generally much lower in the winter, when people turn off their air conditioners and switch over to gas or oil heating. That means that the grid, built to accommodate summer’s peak demand, has plenty of capacity for the added load of new heat pumps coming online — no new infrastructure needs to be built to handle this demand (for now, at least).
“The marginal cost of adding demand is lower,” said Mark Kresowik, senior policy director at American Council for an Energy-Efficient Economy, which supports heat pump-specific rates.
Unitil, which provides electricity to 108,500 households, decided to let customers share in that lower marginal cost. The company estimates customers will save about six cents per kilowatt-hour, which would work out to a monthly savings of more than $100 for a home using about 2,000 kilowatt-hours per month. The new rate should go into effect in early 2025, O’Meara said.
Statewide solutions?
As Unitil is preparing to deploy its heat pump rate, environmental advocates and other stakeholders are pushing for adoption of this strategy beyond Unitil’s relatively limited territory.
Public utilities regulators are in the middle of considering a rate case filed by National Grid, which serves some 1.3 million customers in Massachusetts. National Grid has proposed what it calls a technology-neutral “electrification rate,” which would provide discounts to certain high-volume energy users, which would include heat pump users.
However, several advocates for low-income households and clean energy — including Acadia Center, Conservation Law Foundation, Environmental Defense Fund, Low-Income Energy Affordability Network — as well as the state energy department and Attorney General Andrea Campbell argue that this approach is inadequate. They’ve submitted comments urging regulators to require National Grid to offer a heat pump rate similar to Unitil’s plan, but modified to work within National Grid’s pricing model.
“Every intervenor in the docket who commented on the electrification proposal in any capacity was negative on it,” Murray said. “And the [department of public utilities] in its questioning seemed fairly skeptical as well.”
National Grid declined to comment on the pending rate case.
The electrification rate, opponents argue, would lower costs not just for households with heat pumps, but also for those with inefficient electric resistance heating and even heated pools, effectively running counter to the goal of reducing greenhouse gas emissions.
“The ‘electrification’ proposal would apply to all electricity consumption, whether or not consistent with the Commonwealth’s climate policy of reducing greenhouse gases,” said Jerrold Oppenheim, a lawyer for the Low-Income Weatherization and Fuel Assistance Program Network and the Low-Income Energy Affordability Network.
It would also do nothing to encourage heat pump adoption among low- and moderate-income households, they say: Some 48% of low-income customers interested in switching to a heat pump would actually see bill increases of up to 33%, according to a brief field by Oppenheim for the network.
Beyond the National Grid rate case, other stakeholders are also pushing for seasonal heat pump rates. The state has convened an Interagency Rates Working Group to study and make recommendations on the challenges of changing how electric rates are designed to encourage electrification of home heating and adoption of electric vehicles. In August the group released an analysis that found seasonal rates created significant savings for homes with heat pumps.
“They came to the same conclusion, that this is the right approach,” Kresowik said.
Eventually, the introduction of advanced metering technology will simplify the process of applying lower rates to desired uses, like heat pumps and electric vehicles. But the full deployment of these systems is still several years in the future, and action to ease adoption of heat pumps must be taken much sooner, advocates argue.
In the meantime, many have expressed some optimism that regulators will require National Grid to make its electrification proposal more responsive to the state’s climate and equity priorities.
“I would be surprised if the electrification pricing proposal exists as is in the final [regulatory] order,” Murray said.
Advocates hope utility’s winter heat pump rate discount becomes model for Massachusetts utilities is an article from Energy News Network, a nonprofit news service covering the clean energy transition. If you would like to support us please make a donation.
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