By Audrey Henderson for Energy News Network.
Broadcast version by Terri Dee for Illinois News Connection reporting for the Solutions Journalism Network-Public News Service Collaboration

As low-income households face the dual burden of weather extremes and high energy costs, energy efficiency is an increasingly important strategy for both climate mitigation and lower utility bills.

Passive House standards — which create a building envelope so tight that central heating and cooling systems may not be needed at all — promise to dramatically slash energy costs, and are starting to appear in “stretch codes” for buildings, including in Massachusetts, Illinois, Washington and New York.

And while some builders are balking at the initial up-front cost, other developers are embracing passive house metrics as a solution for affordable multifamily housing.

“We’re trying to make zero energy, high performing buildings that are healthy and low energy mainstream everywhere,” said Katrin Klingenberg, co-founder and executive director of Passive House Institute-U.S., or Phius. 

Klingenberg says the additional work needed to meet an aggressive efficiency standard, is, in the long run, not that expensive. Constructing a building to passive standards is initially only about 3%-5% more expensive than building a conventional single family home, or 0%-3% more for multifamily construction, according to Phius.

“This is not rocket science… We’re just beefing up the envelope. We’re doing all the good building science, we’re doing all the healthy stuff. We’re downsizing the [heating and cooling] system, and now we need someone to optimize that process,” Klingenberg said. 

Phius in practice and action

A Phius-certified building does not employ a conventional central heating and cooling system. Instead, it depends on an air-tight building envelope, highly efficient ventilation and strategically positioned, high-performance windows to exploit solar gain during both winter and summer and maximize indoor comfort. 

The tight envelope for Phius buildings regulates indoor air temperature, which can be a literal lifesaver when power outages occur during extreme heat waves or cold snaps, said Doug Farr, founder and principal of architecture firm Farr Associates.

Farr pointed to the example of the Academy for Global Citizenship in Chicago, which was built to Phius standards. 

“There was a really cold snap in January. Somehow the power went out [and the building] was without electricity for two or three days. And the internal temperature in the building dropped two degrees over three days.”

Farr said that example shows a clear benefit to high efficiency that justifies the cost.

“You talk about the ultimate resilience where you’re not going to die in a power outage either in the summer or the winter. You know, that’s pretty valuable.” 

There is also a business case to be made for implementing Phius and other sustainability metrics into residential construction, such as lowered bills that can appeal to market-rate buyers and renters, and reduced long-term maintenance costs for building owners. 

AJ Patton, founder and CEO of 548 Enterprise in Chicago, says in response to questions about how to convince developers to consider factors beyond the bottom line, simply, “they shouldn’t.”

Instead, he touts lower operating costs for energy-efficiency metrics rather than climate mitigation when he pitches his projects to his colleagues. 

“I can’t sell people on climate change anymore,” he said. “If you don’t believe by now, the good Lord will catch you when He catch you.

“But if I can sell you on lowering your operating expenses, if I can sell you on the marketability, on the fact that your tenants will have 30%, 40% lower individual expenses, that’s a marketing angle from a developer owner, that’s what I push on my contemporaries,” Patton said. “And then that’s when they say, ‘if you’re telling the truth, and if your construction costs are not more significant than mine, then I’m sold.’”

Phius principles can require specialized materials and building practices, Klingenberg said. But practitioners are working toward finding ways to manage costs by sourcing domestically available materials rather than relying on imports.

“The more experienced an architect [or developer] gets, they understand that they can replace these specialized components with more generic materials and you can get the same effect,” Klingenberg said.

Patton is presently incorporating Phius principles as the lead developer for 3831 W Chicago Avenue, a mixed use development located on Chicago’s West Side. The project, billed as the largest passive house design project in the city to date, will cover an entire city block, incorporating approximately 60 mixed-income residential units and 9,000 sq ft of commercial and community space.

Another project, Sendero Verde, located in the East Harlem neighborhood of New York City, is the largest certified passive-house building in the United States with 709 units. Completed in April, Sendero Verde is designed to provide cool conditions in the summer and warmth during the winter — a vast improvement for the low-income and formerly unhoused individuals and families who live there.

Barriers and potential solutions

Even without large upfront building cost premiums and with the increased impact of economies of scale, improved technology and materials, many developers still feel constrained to cut costs, Farr said.

“There’s entire segments of the development spectrum in housing, even in multifamily housing in Chicago, where if you’re a developer of rental housing time and again … they feel like they have no choice but to keep things as the construction as cheap as possible because their competitors all do. And then, some architecture firms only work with those ‘powerless’ developers and they get code-compliant buildings.”

But subsidies, such as federal low income housing credits, IRS tax breaks and resources from the Department of Energy also provide a means for developers to square the circle, especially for projects aimed toward very low-income residents. 

Nonetheless, making the numbers work often requires taking a long-term view of development, according to Brian Nowak, principal at Sweetgrass Design Studio in Minnesota. Nowak was the designer for Hillcrest Village, an affordable housing development in Northfield that does not utilize Phius building metrics, but does incorporate net-zero energy usage standards.

“It’s an investment over time, to build resilient, energy-efficient housing,” he told the Energy News Network in June 2023.

“That should be everyone’s goal. And if we don’t, for example, it affects our school system. It affects the employers at Northfield having people that are readily available to come in and fill the jobs that are needed.

“That’s a significant long-term benefit of a project like this. And that is not just your monthly rents on the building; it’s the cost of the utilities as well. When those utilities include your electricity and your heating and cooling that’s a really big deal.”

Developers like Patton are determined to incorporate sustainability metrics into affordable housing and commercial developments both because it’s good business and because it’s the right thing to do.

“I’m not going to solve every issue. I’m going to focus on clean air, clean water, and lowering people’s utility bills. That’s my focus. I’m not going to design the greatest architectural building. I’m not even interested in hiring those type of architects. 

“I had a lived experience of having my heat cut off in the middle of winter. I don’t want that to ever happen to anybody I know ever again,” Patton said. “So if I can lower somebody’s cost of living, that’s my sole focus. And there’s been a boatload of buy-in from that, because those are historically [not] things [present] in the communities I invest in.”


Audrey Henderson wrote this article for Energy News Network.


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Last year, filmmaker Michael Nash achieved the extraordinary when his documentary "Climate Refugees" was sent to the moon as part of a Lunar Museum project. Now, he's on a new mission: getting the faces of climate refugees featured on postage stamps to keep the conversation about climate migration alive.

"Climate Refugees," which premiered at Sundance and was later featured on Netflix, has been a powerful tool for raising awareness about the human impact of climate change. Nash and his team traveled to 48 countries, uncovering stories of forced migration driven by droughts, food shortages and environmental collapse.

"What we found was this intersection where overpopulation, overconsumption, lack of resources, and a changing climate were slamming into each other," Nash explained. "The outcome was forced migration: people running out of water and food in places they'd lived for hundreds, if not thousands, of years."

While the film's journey to the moon in 2024 was a historic milestone, Nash is now focused on a more down-to-earth goal: creating postage stamps featuring the faces of climate refugees, although gaining approval from the U.S. Postal Service's stamp committee will require demonstrating the issue's national relevance and historical significance.

Despite the progress in raising awareness, Nash emphasized the world has not done enough to address climate migration.

"There is not an international law accepted by all countries that gives asylum or protection to people forced to relocate due to climate change," Nash pointed out.

According to the United Nations, more than 20 million people
are displaced annually by climate-related events, making the need for action more pressing than ever.

Nash was a featured speaker at last week's Climate Correction Conference in Orlando. His next project, a film exploring the intersection of artificial intelligence and climate change, is currently in production and set for release in 2026.


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What if your trash could be the key to a more sustainable wardrobe?

The group Keep Orlando Beautiful is proving it is possible with its annual "Trash 2 Trends" initiative, where discarded materials -- literal garbage -- are transformed into stunning, runway-worthy outfits.

It is not just about a flashy event, it is about inspiring everyone to rethink how they consume and dispose of clothing. The fashion industry is one of the largest polluters globally, responsible for 10% of global carbon emissions and nearly 20% of wastewater production. Fast fashion, which relies on synthetic materials such as polyester and nylon, contributes to microplastic pollution.

Madison Szathmary, coordinator for Keep Orlando Beautiful, said many people do not realize their clothes are made out of plastic.

"Every time you're washing something that's made out of spandex, nylon, polyester -- little plastic fiber from the clothing is getting into your washing machine and ending up in the water reclamation stream," Szathmary explained. "We want people to be able to buy used when they can."

You can also recycle what you already have at home, which is known as upcycling. Trash 2 Trends shows creativity can combat climate change by turning waste into wearable art. The creativity is on full display during Keep Orlando Beautiful's annual fundraiser but the real goal is to encourage everyone to embrace sustainable fashion in their daily lives.

You don't have to be a runway artist to make a difference. Szathmary encouraged everyone to embrace "slow fashion," a more intentional approach to clothing, prioritizing quality over quantity.

"Having an intentional closet," Szathmary added. "We call that slow fashion instead of fast fashion. And you can really, once you have a style and once you know what you like, there are opportunities to find that stuff not only at thrift stores but with your friends. You can swap clothing with your friends."

Szathmary noted the effect of small changes can be huge. By reusing and repairing clothing, we can reduce the demand for new textiles, which often rely on fossil fuels and contribute to greenhouse gas emissions. The fashionable trends were on full display at last week's Climate Correction Conference in Orlando.


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Local leaders in California are slamming the Trump administration's moves to gut dozens of environmental policies on climate change and pollution in low-income communities.

Last week Environmental Protection Agency administrator Lee Zeldin said the agency will loosen restrictions on oil and gas and reconsider the "endangerment finding" underpinning regulations on greenhouse gases.

Felipe Perez, city council member and former mayor of Firebaugh, said farmworkers in the Central Valley rely on the feds to limit air pollution from nearby oil rigs.

"The people that work in the field, we have to go to work even though the pollution is too high," Perez pointed out. "We have to go because we have to feed our families."

The EPA also eliminated the department that fights for environmental justice and killed the Biden-era Justice40 plan, which directed 40% of infrastructure money to low-income communities of color.

Daniel Ramos, mayor pro tem of Adelanto in San Bernardino County, said the Trump administration has frozen millions of dollars earmarked by Congress for improvements to the city's wastewater treatment facility.

"Stripping away funding and programs that have already been signed into law, counted on and, in our case awarded, will definitely have a detrimental impact on those Justice 40 communities," Ramos stressed.

Igor Tregub, a city council member in Berkeley who was born in Ukraine, said the move to lift rules promoting electric vehicles increases reliance on oil and gas, which he called a threat to national and international security.

"This is a boost to the kinds of fossil-fuel industries that fund authoritarian forces like Putin's, that have a desire to take over peaceful democracies like Ukraine's," Tregub noted.

Zeldin defended the moves, insisting they will "usher in a golden age of American success" and calling former President Joe Biden's environmental policy a "green new scam."