The material accounts for more than 7% of global carbon emissions, according to some estimates
3 min
Bill Gates , Jeff Bezos and former Los Angeles Laker Rick Fox are part of a new wave of investors and entrepreneurs looking to make one of the world’s worst pollutants greener.
Concrete accounts for more than 7% of global carbon emissions, according to some estimates. That is roughly the same as the CO undefined produced by all of India and more than double the amount produced by the global aviation industry.
Most of those emissions are caused by cement, the glue that binds together sand and gravel to make the concrete used to build roads, bridges and tall buildings.
Concrete, the second-most-used material in the world after water, is popular because it is cheap, relatively easy to produce, fire-resistant and extremely strong.
“It’s the most democratic material,” said Admir Masic , an associate professor of civil and environmental engineering at the Massachusetts Institute of Technology.
It is also very, very dirty. Cement is made by heating limestone and clay at around 2,700 degrees Fahrenheit in giant kilns and turning them into marble-sized granules called clinker, which are then turned into a powder and mixed with other materials. As it heats up, the limestone releases a lot of CO undefined , and the whole process is often powered by fossil fuels such as coal or gas.
Big cement producers and startups including Brimstone and Partanna, a startup based in the Bahamas and headed by three-time NBA champion Fox, are developing new technologies to produce cement while producing less CO undefined . Breakthrough Energy Ventures, which was founded by Gates and is backed by Bezos, Jack Ma and Michael Bloomberg among others, Fifth Wall and other venture firms have poured tens of millions of dollars into these companies.
These companies are being motivated in part by the federal government, which is dishing out grants and setting aside billions to decarbonise materials such as cement. Local regulators are also encouraging these new technologies. California in 2021 passed a law to cut emissions from cement and New York in 2023 issued rules that limit emissions on concrete used in state-funded construction projects.
Some companies are trying to make cement from different materials that are less polluting. Brimstone said it developed a way to make cement from rocks that contain no carbon. The company said it has raised around $60 million in venture funding to date.
Others are selling substitutes for cement so that concrete mixers need less of it. Eco Material Technologies, for example, harvests coal ash from landfills and volcanic ash from mines and sells it to concrete mixers. These substitutes aren’t new, but the company says it has worked out ways to increase its share in concrete.
“Our goal is to be able to use the last several generations of trash as the next several generations of greener concrete,” said CEO Grant Quasha .
Still others are removing pollutants from the air. The Halifax, Nova Scotia-based startup CarbonCure came up with a process to pump CO undefined into concrete as it is being made and raised $80 million in venture funding this past year.
Partanna, which uses brine from saltwater desalination to make concrete, said homes made from its material suck carbon out of the air.
It is unclear if the greener concrete alternatives will ever catch on broadly. Building codes have rigid rules on what concrete must contain, and many builders don’t like to try out new materials, Masic said.
Cost is another issue. Eco Material’s most environmentally friendly cement alternative, for example, costs around twice as much as standard cement, according to Quasha. CEO Cody Finke said Brimstone’s cement will be as cheap or cheaper than the common sort, but the company has yet to build a factory.
“If I go to the developing world and tell them you’re going to have to pay 20% more for your cement, they won’t do it,” said Eric Toone , a managing partner at Breakthrough Energy Ventures.
Even if some of these new technologies succeed, the startups have yet to prove that they can produce green cement at the vast quantities needed to make a dent in global warming.
Still, Toone said cement makers have no choice but to find cheap ways to cut emissions because ditching the material isn’t an option.
“Cement is sort of this wonder material,” he said. “It’s so cheap, it’s so valuable, it’s so good for what we need that it’s really hard to think of ways around it.”
Copyright 2020, Dow Jones & Company, Inc. All Rights Reserved Worldwide. LEARN MORE
What a quarter-million dollars gets you in the western capital.
Alexandre de Betak and his wife are focusing on their most personal project yet.
New amenities, from a gym to a movie theatre, and a good commuter location filled this suburban office tower
3 min
Manhattan’s office-vacancy rate climbed to more than 15% this year, a record high. About 80 miles away in Philadelphia, occupancy also is at historically low levels. But a 24-storey office tower located between the two cities has more than doubled its occupancy over the past five years.
Developer American Equity Partners bought the New Jersey office tower, known as 1 Tower Center, for $38 million in 2019. At the time, the 40-year-old building felt dated. It had no gym, tenant lounge or car-charging stations. The low price enabled the firm to spend more than $20 million overhauling and luring tenants to the 435,000-square-foot property.
Now, the suburban building is nearly fully leased at competitive rents, mopping up tenants from other buildings after the owner added a new lobby, movie theatre, golf simulator, fitness centre and a tenant lounge featuring arcade games and ping-pong tables.
“Our tenants told us what they needed in order to fill up their offices,” said David Elkouby , a co-founder of American Equity, which owns about 4 million square feet of New Jersey office space.
The new owner also liked the location at the 14-acre hotel and conference-centre complex, off the New Jersey Turnpike’s Exit 9 in East Brunswick. The site is a relatively short commute for millions of workers in central New Jersey and is passed by 160,000 vehicles daily.
The property’s turnaround shows how office buildings can thrive even during dismal times for most of the U.S. office market, where vacancies remain much higher than pre pandemic.
Success often requires an ideal location—one that shortens the commute time of employees used to working at home—and the sort of upgrades and amenities companies say are necessary to lure employees back to the workspace.
One Vanderbilt, a deluxe office tower with a Michelin-star chef’s restaurant and plenty of outdoor space in Midtown Manhattan, is fully leased while charging some of the highest rents in the country.
The 11-story Entrada office building, in Culver City, Calif., is making the same formula work on the other coast. It opened two years ago with a sky deck, concierge services and recessed balconies. A restaurant is in the works. The owner said this month that it has signed three of the largest leases in the Los Angeles area this year.
1 Tower Center shows how the strategy can be effective even in less glamorous suburban locations. The tower is prospering while neighbouring buildings that are harder to reach with outdated facilities and poor food options struggle to fill desks even at reduced rents.
The recent interest-rate cut and reports that some big companies such as Amazon .com are re-instituting a five-day office workweek have raised hopes that the office market might be getting closer to turning.
But with more than 900 million square feet of vacant space nationwide and remote work still weighing on office demand, more creditors are seizing properties that are in default on debt payments.
Rates are still much higher than they were when tens of billions of dollars of office loans were made, and much of that debt is now maturing. The recent interest-rate cut doesn’t mean “office-sector woes are now over,” said Ermengarde Jabir, director of economic research for Moody’s commercial real-estate division.
Lenders are dumping distressed properties at steep discounts to what the buildings were worth before the pandemic. Some buyers are trying to compete simply by cutting their rents.
“Most owners don’t have the wherewithal to do what is required,” said Jamie Drummond, the Newmark senior managing director who is 1 Tower Center’s leasing agent. “Owners positioned to highly amenitise their buildings are the ones who are successful.”
HCLTech, a global technology company, illustrates the appeal. It greatly expanded its presence in New Jersey by moving this year to a 40,000-square-foot space designed for its East Coast headquarters at 1 Tower Center.
The India-based company said it was drawn to the building’s amenities and design. That made possible a variety of workspaces for employees, from quiet nooks to an artificial-intelligence lab. “You can’t just open an office and expect [employees] to be there,” said Meenakshi Benjwal , HCLTech’s head of Americas marketing.
HCLTech also liked the location near the homes of its employees and clients in the pharmaceutical, financial-services and other businesses.
Finally, it didn’t hurt that the building is a short drive from nearby MetLife Stadium. The company has a 75-person suite on the 50 yard line where it entertains clients at concerts and National Football League games.
“All of our clients love to fly from distant locations to experience the suite and stadium,” Benjwal said.
