In a move that could reshape how legacy industries participate in climate solutions, Microsoft is backing a carbon capture project spearheaded by CO280, a climate tech developer working with pulp and paper mills. The deal covers 3.7 million metric tons of carbon removal credits over a 12-year period.
This partnership puts Microsoft's climate ambition into action while unlocking a powerful new role for one of America’s oldest industries. The project retrofits a Gulf Coast pulp and paper mill with carbon capture technology that traps and stores biogenic CO2 emissions underground.
The pulp and paper industry, responsible for nearly 100 million metric tons of biogenic CO2 emissions annually, produces energy by burning “black liquor,” a carbon-rich byproduct of wood processing. CO280’s approach diverts those emissions before they hit the atmosphere.
Using the amine process, a well-established carbon capture method, CO280 captures around 40% of the biogenic CO2 and 30% of total CO2—including emissions from fossil fuels powering the operation. The captured carbon is then transported 40 miles by pipeline to a saline aquifer for permanent storage.
“It just seemed like a no-brainer that everyone had missed,” said Jonathan Rhone, CO280’s co-founder and CEO. Rhone’s background in power plant development gave him a unique perspective on how to retrofit existing mills.
The carbon removal project isn't just a technical feat—it’s a strategic win. The Gulf Coast is already a hub for carbon storage infrastructure, and many pulp and paper mills are located nearby. That “happy coincidence,” as Rhone puts it, makes the region ideal for rapid expansion.
CO280 expects the first facility to be operational in 2028, with plans to roll out millions of tons of removal capacity annually across at least 10 more projects. As the initiative scales, it could position the pulp and paper sector as a leading engine for negative emissions.
Microsoft has pledged to become carbon negative by 2030. The company emitted 17.1 million metric tons of greenhouse gases in 2023, according to its sustainability report. Not all of that can be mitigated with renewables, so it’s leaning on carbon removal to fill the gap.
Deals like this one with CO280 allow Microsoft to offset what can’t be eliminated, especially in hard-to-abate areas like cloud computing and AI workloads. “The trees do all the heavy lifting by capturing CO2 from the atmosphere,” said Rhone, reinforcing the natural carbon sink at the heart of the project.
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This isn’t a typical carbon offset arrangement. CO280 structures these as joint ventures with the paper mills themselves. That means mills not only cut emissions but also earn a share of the carbon credit revenue.
CO280 sells removal credits at about $200 per metric ton, but tax incentives like the U.S. 45Q credit and provisions from the Inflation Reduction Act help bring costs down further for buyers. These incentives make projects financially viable while rewarding companies like Microsoft that invest early.
The credits will also be verified and additional—something that’s increasingly scrutinized in the carbon markets. With partners like SLB and Aker Carbon Capture involved in the technical delivery, CO280 aims to ensure the system meets global best practices.
Still, some researchers have raised flags about the long-term carbon math. CarbonPlan questioned whether retrofits like these achieve true carbon removal, particularly if they only capture part of a facility’s total emissions.
Rhone addressed that concern directly, noting that while the first phase captures about 40% of biogenic CO2, future expansions could double that. "Ultimately the goal is to get to completely net zero mills, but these are complex projects,” he said.
Others point out that unlike ethanol-based carbon capture, pulp and paper mills use biomass from forests, making them more likely to achieve net-negative emissions when carbon is permanently stored.
CO280 is already working on more than 10 additional mill retrofits. With Microsoft’s backing, the company plans to add a couple million tons of carbon removal capacity every year. The retrofit investment is expected to be in the hundreds of millions of dollars per site.
The path won’t be without challenges—financing, regulatory support, and verification will all need to scale with the technology. But the pieces are falling into place for an industry once seen as a climate problem to become part of the solution.
By using the paper supply chain to remove carbon, this partnership shows how industrial operations and tech companies can team up for long-term impact. If successful, it could serve as a blueprint for other sectors with biogenic emissions to follow.
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