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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Three environmental nonprofits filed suit Wednesday against the California Air Resources Board to oppose the expansion of a program allowing oil and gas companies to offset their pollution by buying credits from huge farms producing natural gas from animal waste.

Last month, the state amended the low carbon fuel standard to expand credits favoring biogas, arguing it removes methane from the waste stream and creates renewable power.

Tyler Lobdell, staff attorney for the nonprofit co-plaintiff Food and Water Watch, said the program is actually a perverse incentive for factory farms to get bigger.

"The biggest operators, the biggest polluters, are the most rewarded," Lobdell pointed out. "That is the incentive structure here. Go out and be as big and as polluting as possible, and you will see the largest reward from our program."

The low carbon fuel standard is intended to reduce carbon pollution by incentivizing the transition to clean cars. The lawsuit argued the credit program prioritizes pollution-heavy practices over sustainable solutions.

Lobdell noted manure only produces methane when large quantities are liquefied at concentrated animal feeding operations. He suggested the state require factory farms to manage their manure in ways which do not rely on anaerobic environments emitting methane.

"The real solution to addressing pollution is to reduce the pollution, not to monetize it and lock it in for generations," Lobdell contended. "We should be requiring these facilities to more sustainably manage their waste. That would have climate benefits, that would also have benefits to local air quality and to local water quality."

The lawsuit asks the court to require the California Air Resources Board to disclose, analyze and mitigate the environmental impact caused by the change to the low-carbon fuel standard. The other two plaintiffs include the nonprofits Defensores del Valle Central para el Aire y Agua Limpio, and the Animal Legal Defense Fund.


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Business leaders, clean transportation advocates and other experts say new technologies are helping to accelerate the transition to clean trucks and sustainable freight across Pennsylvania. Members of the Clean Trucks Pennsylvania Coalition are calling on federal and state leaders to back programs that support the deployment of clean-power trucks across the Commonwealth.

Jordan Stutt, senior director, northeast region with CALSTART, a nonprofit dedicated to advancing clean transportation solutions, said the goal is to get gas and diesel-powered trucks off the road.

"We are going to take one of the busiest freight corridors in the country, I-95, and turn it into one of the first zero-emission freight corridors in the U.S. That investment and the jobs that it will bring underscore that this transition to clean trucks is all about opportunity," he said.

The coalition is urging Pennsylvania Gov. Josh Shapiro and state and local leaders to adopt the Advanced Clean Trucks Act. Advocates say the act would reduce emissions by 50% by 2030 and achieve net zero by 2050.

Brooke Petry, field organizer with Moms Clean Air Force of Pennsylvania, said zero-emission trucks are the key to cleaning up the air Pennsylvania families breathe. When residents of South Philadelphia step outside in the morning, the air often has a distinct toxic smell, and she added that toxic air pollution doesn't harm everyone equally.

"Here in Philadelphia, children of color are hospitalized for asthma complications at five times the rate of their white peers. Reducing harmful diesel pollution from trucks is a key component to address climate justice in our city and beyond," she explained.

Erin Johnson, Registered Nurse with the Alliance of Nurses for Healthy Environments, said diesel exhaust is responsible for multiple types of respiratory illnesses and cancers in the region.

"The trucks, buses, trains and port operations that keep goods and services moving through our region also contribute to deadly air pollution. Diesel exhaust contains more than 40 known cancer-causing organic substances. The good news is that we have solutions to this diesel pollution problem," she said.


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Members of the environmental nonprofit GreenLatinos are involved in a push to get more Latinos across Texas involved in the fight against methane gas. Texas is one of the largest producers of the hazardous chemical.

Rogelio Meixueiro, Texas community advocate with GreenLatinos, said a large part of the campaign is educating the community.

"They tell me all the problems that they're experiencing, and the moment I connect with them the fact that there's a fracking site less than a mile away, they start seeing how, 'yeah ever since we moved to this area, we started having breathing problems.' The one that hurts me the most is really the birth defects. Learning that Latino women are some of the most impacted with birth defects is heartening," he explained.

He added that meetings will be held across the state over the next six months, culminating with a final day of action in Austin before the state Legislature.

The organization is forming what they call the Latino Methane Table, to make sure everyone has a seat at the table. Meixueiro said elected officials are passing laws that directly impact the immigrant population, and they hope to give them a voice before the Texas Commission on Environmental Quality.

"We're seeing how Latinos are constantly affected the most in the agriculture fields, construction. It's so hot, often we don't associate 'oh, methane' - the thing that we are getting out of the Permian - is actually the one that is creating some of the conditions," he explained.

He added the state has a history of being unfair to minorities.

"For Dallas and Fort Worth, what we're noticing is that there's a long history that is tied with redlining. And we notice how often the communities with the most amount of permits approved for fracking - fracking near day-care centers, fracking near homes - it's usually areas where particularly Latino and Black communities live," he continued.