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With both temperatures and electricity prices rising, many who are using less energy are still paying more, according to data from the Electricity Price Hub.

In 135 years of record-keeping, Tampa, Florida, has never been hotter than it was last July.
Though often humid, the city on the bay is typically breezy, even in summer. But on July 27, it broke 100 degrees Fahrenheit on the thermometer for the first time ever; two days later, it hit its highest-ever heat index, 119 degrees. The family of Hezekiah Walters, the 14-year-old who died of heat stroke during football practice in Tampa in 2019, urged neighbors at a local CPR certification event to take the heat warnings seriously. Local HVAC companies complained about the volume of calls. Area hospitals struggled to keep their rooms and clinics comfortable. Experts later said the record temperatures were made five times more likely by climate change.
But according to data from Heatmap and MIT’s Electricity Price Hub, Tampa Electric customers used 14% less electricity in July 2025 than they did in the same month of 2020, which was Tampa’s previous hottest July on record — about 216 kilowatt-hours per household less, roughly the equivalent of running a central AC a couple hours fewer per day for an entire month. Tellingly, Tampa Electric raised rates over that period by 84%, with the average bill growing from $111 to $190 per month.
Though there are many instances in many places around the country where usage has dropped as rates rose, the correlation doesn’t necessarily mean people were rationing their electricity. Climate-related factors like anomalously cool summers can lower summer bills, while energy efficiency upgrades can also result in changes to residential consumption. Southern California Edison customers, for example, used 24% less electricity in 2025 than they did in 2020, at least in part due to the widespread adoption of rooftop solar.
Thanks to recent efforts by the Energy Information Agency to track energy insecurity and utility disconnections, however, we can start to tease out deficiency from efficiency. By cross-referencing that data with rate and usage statistics from the Electricity Price Hub, we find a handful of places like Tampa, where people have seemingly reduced their electricity usage because they couldn’t afford the added cost, even during a deadly heatwave. (Tampa Electric did not return our request for comment.)
The EIA’s tracking program, known as the Residential Energy Consumption Survey, tells a clear story: Across the country, people are struggling to absorb the rising costs of electricity. In 2020, nearly one in four Americans reported some form of energy insecurity, meaning they were either unable to afford to use heating or cooling equipment, pay their energy bills, or pay for other necessities due to energy costs. By 2024, the most recent data available, that number had risen to a third — and two-thirds of households with incomes under $10,000. In 2024 alone, utilities sent 94.9 million final shutoff notices to residential electricity customers.
Since 2020, 98% of the more than 400 utilities in the Heatmap-MIT dataset have raised their rates — more than half of them by greater than 20%; about one in 10 utilities have raised their rates by 50% or more. And 219 of those utilities raised rates even as usage in their service area fell, meaning that as customers used less, they still paid more.
“I don’t feel like [the rates have] ever been all that affordable, but they have steadily increased more and more and more,” Janelle Ghiorso, a PG&E customer in California who recently filed for bankruptcy due to the debt she incurred from her electricity bills, told me. She added: “When do I get relief? When I’m dead?”
The people hit hardest by rate increases tend to be those already struggling the most. For example, about 30% of Kentucky residents reported going without heat or AC, leaving their homes at unsafe temperatures, or cutting back on food or medicine to pay energy bills, per the EIA’s 2020 RECS report. Since then, Kentucky Power has raised rates in the eastern part of the state by 45%, adding about $64 to the average monthly bill in a service area where the median monthly household income can be less than $4,000.
The Department of Energy’s Low-income Energy Affordability Data, which measures energy affordability patterns, actually obscures some of this burden. It reports that for all of Kentucky, annual electricity costs account for about 2% of the state’s median household income, which is about average for the nation. But in Kentucky Power’s Appalachian service area specifically, many households live under 200% of the poverty level, and $15 of every $100 someone earns might go toward their energy costs, Chris Woolery, the residential energy coordinator at Mountain Association, a nonprofit economic development group that serves the region, told me. “The situation is just dire for many folks,” he said.
Kentucky Power is aware of this; its low-income assistance charge has grown by 110% since 2020, the Heatmap-MIT data shows. Woolery also noted that the utility agreed to voluntary protections against disconnections, such as a 24-hour moratorium during extreme weather, in a rate case settlement with the Kentucky Public Service Commission. The commission rejected the proposal, but the utility kept the protections anyway, Woolery told me.
Customers in other areas are not so lucky.
In states like Oklahoma, where one in three households reported energy insecurity in 2020, rates rose about 30% from 2020 to 2025, according to our data. Per the EIA survey, Oklahoma’s monthly disconnection rate is more than three times the national average. Oklahoma doesn’t have the highest electricity rates in the country — far from it. But median incomes there are low enough that even moderate rate increases leave some with hard choices.
Interestingly, in bottom-income-quartile states, where median household incomes are below $81,337, only about 30% of utilities show a pattern of rising bills and falling electricity usage, which would suggest energy rationing. The other 70% of utilities show the opposite effect: usage is rising despite electricity rates becoming a bigger burden of customers’ incomes. In Kentucky Power’s service area, for example, bills may be up $64 a month, but usage remained essentially flat.
“Think of it this way: The electric company goes to the front of the line,” Mark Wolfe, the executive director of the National Energy Assistance Directors Association, a policy group for administrators of the Low-Income Home Energy Assistance Program, told me of how households triage their bills. If you need to buy something from the grocery store, the drug store, or pay your electricity bill, then “the utility goes to the front of the line because they can shut off your power, which causes lots of other problems.”
Wolfe added, “Plus, if you’re really in dire straits, you can go to the food bank. You can’t go to the ‘other’ utility company.”
Even as resource-strapped households put a higher share of their income toward electricity, they’re also least able to afford energy efficiency upgrades like newer appliances, smart thermostats, or solar panels. The pattern is prevalent in places with extreme climates, such as Louisiana, Mississippi, and Alabama, where turning off the AC in the middle of summer could mean death. It shows up most starkly among the most extreme rate examples in our data set, like the utilities serving remote Alaska villages — despite astronomical electricity prices, usage hasn’t fluctuated much because its customers are already using it as little as they can afford. The elderly and other individuals living on fixed incomes are also often unable to cut their electricity usage beyond what little they’re already using.
In middle-income states like Florida, roughly 60% of the utilities in our dataset show rising bills and falling electricity use — more than twice the rate we see in the lowest-income states. While the poorest Americans have already reduced their electricity use to the bare minimum and are cutting groceries and medicine in order to keep the heat and AC on, in places like Tampa, where the median income is $96,480, the electricity rate shocks have caused even middle- and even high-earning households to start worrying about their bills. According to a new survey released Tuesday by Ipsos and the energy policy nonprofit PowerLines, 74% of respondents with household incomes over $100,000 said they are worried about their utility bills increasing.
“People are seeing their utility bill as one of the few things that changes so much month to month, that is so unpredictable, and that they don’t have any control over,” Charles Hua, the founder and executive director of PowerLines, told me.
Wolfe, the executive director at NEADA, agreed, saying that for the first time, the association has begun hearing from families with incomes above the threshold who need assistance. “An extra $100 a month for a family, but they’re middle class — that shouldn’t push them over the edge,” at least in theory, Wolfe said. But for those with no flexibility in their budgets, anything additional or unpredictable “pushes them close to the edge — from going from middle class to lower middle class — and I think that’s why this affordability crisis is becoming such an issue.”
We can also see this phenomenon in the explosion of line items on utility bills going toward funding assistance programs. Appalachian Power Co.’s low-income surcharge, for instance, is up 3,200% for customers in Virginia; Puget Sound Energy’s low-income program is up 970% for customers in Washington; and PacifiCorp Oregon’s low-income cost-recovery charge, up 879%.
The EIA data, too, bears this out: Florida had one of the highest rates of people reporting they were “unable to use air conditioning equipment” due to costs in the RECS data, and in 2024, there were 186,202 disconnections in the state in July alone — every one of which would have meant people no longer had the power to run their ACs. (FPL and Duke Energy Florida also show usage declines as rates rose, although neither raised rates as much as Tampa.)
The data also shows places where higher-income earners have aggressively pursued efficiency upgrades to lower their usage. In the LA Department of Water and Power service area in California, usage is down more than 11% overall between 2020 and 2025, one of the biggest drops in our dataset. But the lower usage is more evenly distributed month to month, indicating that things like solar adoption and efficiency programs are likely behind the drop, rather than cost pressures. (Rates there still rose more than 28%, or about $15 per month.)
Even doing everything right wasn’t enough to save customers in the end — households that cut their electricity use still saw their bills rise by an average of $20 a month, our data shows.
Perhaps most concerning, though, is the relentless upward trajectory. PowerLines reports that utilities have submitted $9.4 billion in new requests in the first quarter of 2026 alone. Heatmap and MIT’s numbers show that 79% of utilities raised rates in 2025, and 55% have raised them again already this year.
But the advocates I talked to stressed that utilities have more agency than they get credit for. Take Kentucky Power, for example, with its voluntary disconnection protections. “It just shows that you don’t necessarily have to make disconnections to be financially solvent,” Woolery of the Mountain Association pointed out. Or take Ouachita Electric in Arkansas, which passed a 4.5% rate decrease after investing in efficiency upgrades in consumers’ homes through a pay-as-you-save model.
But that’s the rare exception. For most customers, relief is not obviously on the way. Signs increasingly point to the imminent onset of a super El Niño, which could bring punishing, climate-change-intensified heat waves across the United States. The July 2025 record in Tampa will almost certainly not stand; someday, it’ll be the second-hottest summer, or the third. In a few decades, it might even look cool.
And still there will be bills to pay.
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Seattle practiced responding to a heat dome during the international soccer tournament. It didn’t go well.
Welcome to Seattle! If you’re one of the 750,000 visitors in town to watch the 2026 North American FIFA World Cup, you’re going to love it here. For one thing, you’ve arrived just in time for the city to suspend its interminable construction for the games. That’s a plus! Be sure to check out our newly pedestrianized Pike Place Market and stroll along the waterfront to “Seattle Stadium” (or sound like a local and call it “Qwest”). You might even get a little chilly from the wind off the bay — you can thank our “temperate, oceanic climate” for that. It’s what makes Seattle the safest place in the United States to attend (or play in) a World Cup game, per researchers at Queen’s University Belfast — at least, from the perspective of extreme heat.
That’s worth bragging about. Extreme heat has been a concern at almost every subsequent World Cup going back to the 2014 World Cup in Brazil, including the 2022 tournament in Qatar, which FIFA had to reschedule to the winter. The 2026 World Cup could get dicey, too. Of the 104 scheduled matches in 16 host cities in the U.S., Canada, and Mexico over the next month, at least half have a 50% chance or greater of being played in temperatures of 82 degrees Fahrenheit or higher, according to research by Climate Central — that being the threshold at which player performance begins to suffer, with athletes slowing down, getting sick, and making poorer decisions because of the heat. The odds of there being impairing heat during the World Cup final in New York on July 19 are basically a coin flip, and 17% higher than they otherwise would have been due to climate change-induced warming.
All of that is just part of what makes Seattle’s host city status so appealing. There is only about a 3% chance of performance-impairing heat during its two mid-June fixtures, rising to 6% later in the month and into July.
Unless, of course, there’s another heat dome.
In 2021, temperatures in Seattle peaked at 108 degrees on June 28, which this year will fall between when the city hosts Egypt vs. Iran and a Round of 32 match. Needless to say, 108 degrees is not just perspiration-inducing; it is well beyond the 89.6-degree wet-bulb globe temperature threshold at which FIFA considers postponing matches. While the possibility of another heat dome in the next few weeks is admittedly an edge case — before 2021, Seattle had only touched 100 degrees three times in 126 years of recorded-keeping— it’s still a realistic enough possibility that last spring, the National Weather Service’s Seattle office ran a tabletop exercise with its local partners to game out just that.
“Before 2021, heat [in Seattle] was just another hazard alongside fire and smoke and those sorts of things,” Reid Wolcott, the warning coordination meteorologist with the NWS Seattle, who helped lead the two-day-long run-through, told me. The heat dome “really highlighted that heat is a powerful hazard that can cause significant loss of life.”
After more than 400 people died in Washington alone, the NWS dedicated considerable time and resources to its heat preparedness and messaging in the Pacific Northwest. Beginning in 2022, the National Integrated Heat Health Information System began offering technical support for heat tabletop exercises in communities around the country. Seattle was supposed to participate in 2024 but “due to some logistical reasons, we ended up delaying it until 2025,” Wolcott said. “And because of that, we were like, We’re well on our way into World Cup planning, here.”
The idea of the “Heat Dome Cup” exercise was to kill two birds with one stone — to test the Seattle area’s response four years after the heat dome, as well as its ability to respond to a weather crisis when thousands of visitors are in the city for the World Cup. Participants included representatives from surrounding cities such as Bellevue, Everett, and Portland, Oregon; county-level offices including from climate, emergency management, and public health; the University of Washington; and the Port Gamble S’Klallam Tribe.
The results of the exercise were both encouraging and not: For every core capability tested, from “threat/hazard identification” to “communication” and “community resilience,” the after-action report found that Seattle “performed with some challenges.” There was “limited local data” on the compounding hazards of heat, cooling center efficiency, and — particularly alarming — the local healthcare system’s ability to respond during such an event. “Prehospital triage, surge planning, and better integration with public health systems are urgently needed,” the report found. Because paramedics attempt to bring down a heat stroke patients’ temperature before transporting them to a hospital — a laborious process often involving filling a home bathtub with ice, setting the patient in it, and waiting — the emergency response during heat events is slow, and can quickly back up and overwhelm the system.
Heat Dome Cup partners directed my questions about King County’s readiness to handle extreme heat during the World Cup to the public health office, which told me no one was available for an interview.
Carlos Martinez, a senior climate scientist with the climate and energy program at the Union of Concerned Scientists who did not participate in the exercise, told me that after reading the report, he hopes that “there’s a recognition and awareness of the fact that there’s a lot of work that needs to be done.” He also flagged an observation from the exercise regarding the development of stronger workplace protections during the World Cup.
“That sometimes can be neglected,” he went on. “You have folks in construction, food service, retail, landscaping, and sanitation who work a full day outside during these events. What are the protocols that are out there to ensure that they are protected from heat-related illnesses?”
I put the question to Hollie Stark, the communications coordinator for the Office of Emergency Management in Seattle. (While Stark’s office participated in the exercise, Stark did not.) She told me that Washington’s Department of Labor & Industries offers recommendations for how employers can protect their workers from heat and smoke, including running trainings and publishing posters and pocket cards in multiple languages that promote offering adequate water, shade, and breaks. “We’re thinking about maybe bars and places that might be hosting [FIFA viewing parties] that don’t have access to AC but might have an influx of people,” she said as a hypothetical, “and we’re encouraging them to listen to those recommendations.”
In general, the people I spoke with in Seattle who were involved in the exercise acknowledged that messaging and communication were the areas the city struggled with the most. “That has definitely been the single biggest thing — trying to make sure that we’re all singing from the same sheet of music,” Wolcott told me. “Because we weren’t prior to 2021.”
One of the biggest hurdles has been figuring out exactly how to communicate potential extreme heat warnings to the thousands of visitors traveling to Seattle. During my conversations with officials involved in the Heat Dome Cup, officials pointed me to myriad preparedness websites, real-time risk tools, opt-in alert systems, and health and safety resources for out-of-town visitors, which left me — a local fluent in English — feeling even more confused.
Language itself is one thing — on that front, Stark told me her office has already pre-scripted messaging for extreme heat translated into Spanish and the eight threshold languages of King County — Vietnamese, Somali, Russian, Chinese, Korean, Amharic, Arabic, and Ukrainian — as well as seven additional World Cup spectator-specific languages — Arabic, Farsi, Dutch, French, Bosnian, Serbian, and Croatian. But one of the threats of having a heat dome during a major sporting event is that “you have a lot of visitors coming from all different parts of the world,” Wolcott said. “Some come from locations where they are probably more acclimated to heat than we are, but some may be coming from areas that are cooler climates than ours.” Proper acclimation can take weeks, if not an entire season — far longer than most spectators will be in town.
But perhaps the biggest takeaway is that a heat dome isn’t required for people to be under heat stress, even in a place as temperate as Seattle. Wolcott told me the NWS’s seasonal outlook for the summer in the region indicates above-average temperatures, and while that “does increase the risk of a heat event occurring, it has nothing to do with the actual magnitude of it. You could have a 2021-level event, or you could have 30 smaller events, and there is no way to tell exactly what’s going to happen.”
Indeed, even fairly moderate temperatures can sneak up on spectators. While FIFA is in charge of making decisions that impact their athletes’ health, Shel Winkley, the senior engagement specialist and meteorologist at Climate Central, pointed out that “fans are still sitting in the sun in the heat, and if they’re fans like me, they’re not drinking water during [the FIFA-mandated in-game] cooling breaks.” Spectators get to the stadium early, stand in long lines in the sun, sit in crowded stadiums with potentially no shade — and essentially endure an entire day of heat, even if the temperatures seemed manageable when they walked out their hotel door.
At this point, there is nothing to indicate Seattle’s worst-case scenario will come true. (Stark also mentioned that a true worst-case scenario more likely involves the Big One than extreme heat, but we won’t go there.) But “just because historically the odds are low” for a heat dome in the Seattle area “doesn’t mean that they’re zero,” Winkley said.
Martinez, the climate scientist with UCS, stressed to me that while the Heat Dome Cup was an engaging thought experiment, bringing together 30 distinct partners for two whole days, he fears that a gutted NWS and Federal Emergency Management Agency might lack the funding or personnel to act on the weaknesses the exercise exposed. “If you have this one exercise but no follow-through, that can risk eroding trust by those populations who gave time out of their day to come and speak to the federal government about the importance of this issue,” he told me. “We shouldn’t just do this for well-renowned events. This should be an evergreen thing.”
But Wolcott, the lead on the Heat Dome Cup, sounded to me like he was at the end of a long marathon when I spoke to him. “I’ve been planning for [the World Cup] for three years now. I’m ready for it to be over,” he told me, laughing.
“We are always doing this; it was just one exercise that we did last May,” he added. “I’m just looking forward to late July at this point.”
Current conditions: Tropical Storm Cristina is inching north toward landfall in Central America, threatening floods, landslides, and winds of up to 73 miles per hour • Washington, D.C., is poised for rain for the rest of the week as temperatures rise to nearly 100 degrees Fahrenheit by Friday • By contrast, Cartersville, Georgia, where the solar manufacturer Qcells just started up its factory, is looking at a two-day break of sunshine from an otherwise gray and wet forecast.
At the start of 2023, South Korea’s biggest solar manufacturer, Qcells, began construction on a sweeping new factory northwest of Atlanta in Cartersville, Georgia. Betting that U.S. tariffs on Chinese solar panels were here to stay, the company gambled on bringing most of the supply chain under one roof. On Tuesday, Qcells started producing solar cells at the plant, marking what it called “a major milestone toward completing the country’s only vertically integrated solar manufacturing plant.” The firm expects to reach full production by the third quarter of this year. The factory’s module assembly line, meanwhile, is now at full capacity, building 16,700 panels per day. “Producing the first solar cells at Cartersville is a milestone for Qcells and for American manufacturing,” Andy Park, the global chief executive of Qcells, said in a statement. “As our ingot, wafer, and cell lines reach full capacity, we’ll be making the major components of a solar panel right here in Georgia.”
The U.S. could be seeing the start of a small solar boom. Last year alone, at least 30 new utility-scale solar factories came online, as Heatmap’s Emily Pontecorvo reported last month.
Over the weekend, as I told you on Monday, a federal court blocked the Trump administration’s rules for using the soon-to-expire tax writeoffs for investing in or producing electricity from solar panels and wind turbines. But with just 24 days to go until the tax credits officially end, few developers are likely to move quickly enough to benefit from the ruling. “Practically speaking, I don’t think this is likely to have much impact on the market or behavior in the coming weeks,” Heather Cooper, a tax lawyer at McDermott Will & Schulte, told E&E News. “The deadline is less than four weeks away.”
Investments into electrical grids are on track to surpass $650 billion globally this year, according to new data from the consultancy Rystad Energy. That’s up 5% from last year and more than double the investments recorded in 2020, PV Magazine reported. The high cost comes as long lead times and pricy components for transformers, high-voltage circuit breakers, and switchgears strain and stall upgrades and expansions to power systems all over the world. The soaring growth of wind and solar is propelling grid investments, which are needed to patch more intermittent and often far-flung renewables onto the system. In 2010, wind and solar made up just 2% of global generation. By 2040, Rystad expects them to make up nearly half the mix.
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Everyone recognizes Canada as a major oil producer, metal miner, and hydroelectricity generator. But did you know the Canucks are not just a serious player in nuclear power, but actually have their own domestically-designed reactor that can run on raw uranium? Get this, it even has a catchy name: the CANDU. Pronounced CAN-do and short for Canada Deuterium Uranium, the pressurized heavy water reactors are among the only commercial designs in the world that can run on unenriched, natural uranium. The advantage, especially for a country like Canada with vast uranium deposits, is that they’re faster to build, cheaper to fuel, and free of the international scrutiny that comes with enriching uranium. The downside is that they break down faster than the light water reactors that make up the entirety of the U.S. fleet. But Canada is demonstrating that isn’t a big problem. On Monday, the Bruce nuclear power station brought its Unit 3 reactor back online, completing refurbishments seven months early and $107 million under budget, NucNet reported. You don’t need to know a lot about the American or European nuclear industries to know “early and under budget” aren’t words typically associated with any recent or ongoing projects.
The best-proven way to make truly green steel involves turning iron ore into direct reduced iron through a process that, when powered by green hydrogen instead of natural gas, significantly slashes any carbon emissions associated with its production. Assuming it’s finished off in an electric arc furnace, it’s green steel — and even greener if that final process was powered by renewables or nuclear. Yet despite some high-profile projects, green hydrogen has remained too expensive in the West, even as China’s industry starts to boom. That could be changing. On Tuesday, the German steelmaker Salzgitter inked its first major offtake agreement for green hydrogen from the supplier EWE, Hydrogen Insight reported. One of Germany’s largest steel producers, Salzgitter will buy roughly 10,000 metric tons of hydrogen per year from the electrolyzer plant EWE is building in Emden, near the Dutch border.
Meanwhile in America, U.S. Steel unveiled plans to invest up to $2.5 billion into upgrading the Mon Valley Works, southeast of Pittsburgh. The renovations come after Japanese steel giant Nippon’s takeover of the iconic American firm last year. To win President Donald Trump’s blessing, Nippon gave the federal government a “golden share” in the company. As Heatmap’s Matthew Zeitlin wrote last year, that could ultimately give a future administration leverage to press U.S. Steel to green its operations.

If you’re booking a flight right now, you might not yet be feeling the difference. But U.S. production of jet fuel has reached record highs as refiners scramble to respond to soaring prices following the closure of the Strait of Hormuz. By the start of May, the four-week average estimate of fuel production surpassed 2 million barrels per day for the first time on record, according to new analysis by the Energy Information Administration. But with domestic inventories still relatively high, much of that increased production is being exported.
Entech’s S2 platform debuted last year to help make century-old boilers more efficient.
Emissions from existing buildings are responsible for about 70% of New York City’s climate emissions, with space heating as the dominant source. Yet most of the city’s multifamily buildings still rely on central steam boilers that cycle on and off when the outdoor temperature drops below a certain threshold, regardless of indoor conditions. The result is a system that leaves many residents sweltering in the dead of winter, wasting fuel and money while releasing unnecessary greenhouse gases.
Completely overhauling and modernizing a central boiler system — many of which date to the early 1900s — and installing a building-scale heat pump could address many of these issues. But that’s an expensive, complex, and disruptive endeavor that many building owners either can’t afford or simply don’t want to undertake. And while heat pump startups such as Quilt and Gradient are making inroads in single-family homes and individual apartment units respectively, neither is working to optimize the operations of existing steam boilers, which remain the dominant heating source for New York’s apartment stock.
That’s where Entech, a 30-year-old building energy management company, comes in. The company’s platform has long used indoor sensors to monitor the performance of central boilers and help them run more efficiently. Last year, however, the company revamped its software to incorporate artificial intelligence. The new system, called S2, autonomously monitors 20-plus sensors installed throughout the buildings where it operates, adjusting heating cycles with greater precision while continuously tracking the overall health and performance of boiler room operations.
On Wednesday, the company announced the results from the S2’s first year of operations: Across 401 New York City apartment buildings, the platform slashed emissions by nearly 25%, avoiding more than 16,000 metric tons of carbon pollution and generating over $5 million in savings for property owners.
Previous iterations of the company’s tech relied on preset rules such as, “When it’s 55 degrees [Fahrenheit], you need a shorter cycle, and when it’s 20 degrees, you need a longer cycle,” Heather Zoberman, Entech’s director of product development, explained to me. Those settings dictated how long a boiler turned on and how long it stayed off. With AI, however, the company can measure how quickly individual units are actually heating up and adjust performance in real-time.
For a company that spent decades focused on incremental improvements to boiler operations, it’s a meaningful shift. “Now we have the ability to do flame modulation — so a higher flame, a lower flame— based on the load, based on the building temperatures,” Zoberman told me. The same level of granular control applies to the fans and pumps that move heat through the building, too. “A little bit slower fan, a little bit lower flame is really where you get those savings that add up,” she said. According to Entech, those savings are typically passed onto the residents, with the average tenant saving roughly $200 on heating costs last year.
While building owners are happy to see these savings too, many are turning to Entech primarily to comply with the New York City Council’s Local Law 97, which requires buildings larger than 25,000 square feet to cut emissions 40% by 2030 compared to 2005 levels, and reach net zero emissions by 2050.
The nonprofit housing developer and operator Breaking Ground, for example, builds supportive housing for low-income and formerly homeless New Yorkers, and has been doing so for decades. It adopted Entech’s new boiler control system just six months ago to comply with the emissions law. While Breaking Ground’s deputy VP of facility operations, Lorenzo Torres, didn’t have exact savings figures on hand, he said the system has saved the organization “a lot of money,” largely by enabling staff to remotely identify equipment issues such as leaks and temperature fluctuations without having to send anyone to the building and before they develop into expensive headaches.
“We do have a work order system, but data is only as true as the person that’s entering the data,” Torres explained. Thus if a tenant misidentifies an issue or fails to file a work order in the first place, Breaking Ground might assume everything is running efficiently. By contrast, “the S2 controller actually is able to, with conviction, let us know that there is an issue with the boiler,” he said.
What Entech’s system still can’t do is solve the problem of unit-level temperature variation. Factors such as floor level, window exposure, and radiator placement mean some apartments will naturally run hotter or colder than others. But because Entech primarily operates in apartment complexes with central boilers, it can still only make adjustments at the building level Because of this, its system could be a complement to something like a smart radiator, which can control how much heat each apartment receives.
Now, Entech is looking to expand beyond New York. Boston is a natural next market, Zoberman told me, given its stringent building emissions requirements. Chicago is also on the company’s radar, thanks in part to incentives from the natural gas utility People’s Gas, which can help offset the cost of energy efficiency upgrades. The company’s ambitions extend beyond just geographic expansion, however — it’s also broadening its platform to monitor and optimize central cooling systems and other electrified technologies such as heat pumps and mini splits.
It looks like it should have plenty of room to run. Additional jurisdictions from Washington D.C. to St. Louis are increasingly adopting hard caps on building emissions, while dozens more now require annual energy-use reporting — often a first step towards more stringent regulation.