![](images/images_04_05_2023/GT-demo-unit-2%20copy.jpg)
Global
Thermostat's commercial-scale demonstration unit is operating in
Brighton, Colorado. (Global Thermostat)
Just northeast of Denver, a big new facility
topped with giant industrial fans is sucking carbon dioxide directly
from the sky. The machine is ostensibly one of the largest “direct
air capture” units operating worldwide. Right now, however, all the
carbon it captures is returned to the atmosphere.
Global Thermostat, the company that built the facility, is
“venting” the planet-warming gas until it can secure an “offtaker”
for the CO2 captured by the new unit, Nicholas Eisenberger, head of
market development, policy and engagement, told Canary Media. That
could potentially include finding a company to sequester the carbon
underground or use it to make valuable products, such as concrete and
synthetic fuels. The project, which is capable of capturing 1,000
metric tons of CO2 per year, has been operating since late 2022.
“The first step has been to get the commercial-scale
demonstration unit operating,” Eisenberger said. The other essential
details — like how and where to store, compress and transport the CO2
once it’s been captured — are still being sorted out, he added.
On Tuesday afternoon, the 13-year-old company
unveiled the direct air capture unit and its new headquarters in the
Denver suburb of Brighton. Colorado Gov. Jared Polis and former U.S.
House Speaker Nancy Pelosi, both Democrats, attended the launch event,
along with White House officials and U.S. Senator John Hickenlooper
(D-Colo.), the state’s former governor.
The high-profile ceremony arrives as the United States is
poised to pump billions of dollars into building what are essentially
giant air filters, and at a time when private investment in
carbon-removal technology is skyrocketing.
Direct air capture, or DAC, is in its infancy, and current
versions of the technology are extremely energy-intensive and highly
expensive to operate. Yet DAC could still play an important role in
limiting global temperature rise. The world will need to remove — and
store — CO2 to avoid the most severe effects of a warming planet,
according to a major United Nations report. But scientists have
stressed that such methods are “futile” without radical and immediate
cuts in greenhouse gas emissions.
Global Thermostat’s announcement also comes nearly two years
after Bloomberg Green published an investigation exposing a “toxic
corporate culture” within Global Thermostat. According to the article,
years of mismanagement delayed the pioneering company’s efforts to
advance its technology and fulfill its lofty promises of capturing
thousands of tons of CO2 in units deployed around the world.
In January 2022, Global Thermostat effectively sidelined its
co-founder and then-CEO Graciela Chichilnisky from the business and
began seeking a new executive. Nine months later, Paul Nahi,
previously the CEO of Enphase Energy, stepped in to lead Global
Thermostat, with the goal of scaling the company’s carbon-sucking
technology.
“Our founders are very passionate and knowledgeable, and really
set the direction for the need for direct air capture and the core
technology,” Eisenberger said when asked about the recent leadership
challenges. Eisenberger is an early investor in the firm, and his
father, the physicist Peter Eisenberger, co-founded Global Thermostat
with Chichilnisky.
“As the market interest has grown, and as the company has
matured, we’ve really shifted our attention to commercialization and
deployment and…built the team for that going forward,” Nicholas
Eisenberger said.
![](images/images_04_05_2023/GT-DAC-1%20copy.jpg)
Global
Thermostat’s "kiloton-scale" unit for capturing CO2 from the air is
seen from above. (Global Thermostat)
The two main methods for DAC are liquid
systems, which pass air through chemical solutions, and solid systems,
which pass air through filter materials that chemically bind with the
CO2. Global Thermostat is pursuing the latter approach, using a
process involving high-efficiency industrial fans and low-temperature
heat.
The 18 DAC facilities built worldwide to date have a combined capacity
of 10,000 metric tons of CO2 per year, according to the International
Energy Agency. That’s the equivalent of capturing the emissions of
nearly 2,200 gas-powered U.S. passenger cars in a year. The largest
project of the bunch is Climeworks’ Orca plant in Iceland, which began
operating last September. The facility can draw up to 4,000 tons of
CO2 a year; the gas is then pumped deep underground, where it slowly
turns into rock.
But the world will need to remove dramatically more CO2 than that if
it’s going to limit global warming to 1.5 degrees Celsius.
“When we think about how much carbon removal we’re going to need by
2050, we want to get to a place where we’re doing 5 to 10 gigatons per
year — and DAC, we hope, can get there,” said Anu Khan, deputy
director of science and innovation for Carbon180, a nonprofit focused
on CO2 removal.
In an effort to accelerate DAC development, the Department of Energy
last year launched a $3.5 billion program to build four regional DAC
hubs. The Inflation Reduction Act also expanded the 45Q tax credit to
provide bigger incentives for DAC initiatives. Developers can now earn
$130 for every metric ton of CO2 that they capture and utilize, or
$180 for every ton that they permanently store in a geologic
formation.
Global Thermostat said that, at 1,000 tons per year, its new
demonstration unit in Colorado meets the minimum capacity requirements
to qualify for the expanded tax credits.
As far as venting CO2 goes, it’s generally a common practice as
engineers test and refine their lab-based or small-scale DAC units,
Khan said. But it doesn’t make much sense financially — let alone from
a climate perspective — to continue running units for very long
without storing and selling the CO2.
“This might be something that a company would do in the really early
days as they start building out the facility,” she said of venting.
“But a company wants to get to the place where they’re capturing,
storing and then able to sell that CO2…for some kind of use as quickly
as possible in order to finance their projects.”
In a follow-up email, Global Thermostat said the company doesn’t have
the capability to store CO2 at its site, so the plan for now is to
vent the gas until another company can take it off of Global
Thermostat’s hands. The company also plans to add systems for
compressing CO2, which allows for storing and handling the gas, “in
another phase of the project.”
Global Thermostat didn’t disclose how much electricity and heat its
Colorado facility consumes or the source of those inputs. It said only
that the unit is “operating in the range we expect it to.” The
facility isn’t operating around the clock, however. As a commercial
demonstration, engineers occasionally conduct planned stoppages to
“test and optimize its performance, therefore it has not been running
continuously.”
Future DAC units will be sold to developers who have their own plans
for sequestering or using the CO2, according to the company. In
January, Tokyo Gas said it invested in Global Thermostat and intends
to implement the carbon-capturing technology. Global Thermostat is
also still in discussions to build a small DAC unit in Chile to
produce synthetic fuels, Eisenberger said, though the company isn’t
ready to discuss other potential collaborations.
“We’ve just been focused on making sure the technology hits this
milestone,” he said of the demonstration unit’s launch.
Green Play Ammonia™, Yielder® NFuel Energy.
Spokane, Washington. 99212
www.exactrix.com
509 995 1879 cell, Pacific.
exactrix@exactrix.com