Today’s four posts circle a single question: whose evidence, and whose workforce, actually moves CDR from slide decks into concrete, steel, and permitted projects? The answer, on all three fronts, is that the enabling layer is doing more of the work than the pure-play removal layer, and the policy layer is still deciding which science to trust.
The evidence fight in UK policy
Naomi Vaughan of the Tyndall Centre has spent years arguing that greenhouse gas removals belong in UK climate policy as a complement to emissions cuts, not a substitute. The fight now is less about whether CDR should be in the mix and more about which analyses the UK government uses to set removal targets, procurement rules, and the boundary between “hard-to-abate residual” and “we didn’t try hard enough to decarbonise.” That distinction matters. CDR earns its social license only when it cleans up residual emissions we cannot eliminate, not when it buys extra years for fossil combustion. Vaughan’s public work has been consistent on that point, and UK rulemaking over the next 12 months will show whether her framing holds or gets diluted by industry-preferred baselines.
The practical stake for anyone building in the UK: how the Climate Change Committee and BEIS-successor bodies score engineered removals against nature-based removals will shape which projects clear the bar for public co-funding and which get left to voluntary buyers.
The workforce is mostly enabling tech, not removal
I pulled headcount data across CDR-adjacent companies and the split is stark. Enabling technology firms, meaning the sensors, software, MRV (measurement, reporting, verification) platforms, engineering-and-procurement contractors, and specialty suppliers, employ roughly 7,783 workers across the companies tracked in Captain Drawdown’s CDR Company Directory. Pure-play carbon dioxide removers, the companies whose product is a tonne of CO2 stored, trail well behind.
A few things this tells us. First, most CDR jobs today are jobs that would exist in some form even without a carbon removal market: process engineers, geochemists, MRV data scientists, EPC (engineering, procurement, construction) staff. That is healthy. It means the labor market is not betting the farm on any one removal pathway. Second, the pure-play headcount gap reflects where we are on the deployment curve. Once first-of-a-kind DAC, BECCS (bioenergy with carbon capture and storage), and ERW (enhanced rock weathering) plants move to Nth-of-a-kind, operator and technician headcount at removers should climb sharply. Third, the enabling firms are the ones with revenue that does not depend on the credit price clearing $200 a tonne. That is the layer investors can underwrite today.
The caveat: my directory excludes company-internal sustainability teams at cement, steel, and chemicals majors, which almost certainly employ several thousand more people working on CDR-relevant abatement and capture. The 7,783 figure is a floor.
Brineworks and the e-fuels question
Brineworks has moved from what founders called a “magic box” prototype to what they now describe as an “upgraded suit,” pulling CO2 from seawater and pairing it with green hydrogen to make e-fuels. Two things are worth naming clearly. One, CO2 pulled from seawater is genuine removal only if the resulting fuel is used in an application where the alternative was fossil carbon and where the fuel is not combusted in a way that returns the carbon to the atmosphere with no offset. E-fuels for aviation are carbon-neutral at best, not carbon-negative. Two, the technology is a plausible route to lower-cost DOC (direct ocean capture) because seawater carries about 150 times more CO2 per volume than air, but the electricity and hydrogen inputs still dominate the cost stack.
Brineworks is interesting not as a removal play but as an enabling-tech play for the e-fuels market. Which brings us back to the workforce data: this is another enabling-layer company, not a pure remover.
Concrete as the biggest carbon trap
Concrete is the largest single material humans make by mass, and cement production is responsible for roughly 8 percent of global CO2 emissions. The same chemistry that makes cement a huge emitter, calcination of limestone, also makes cured concrete a slow, permanent CO2 sink through carbonation over decades. Companies working on mineralised aggregates, CO2-cured concrete, and supplementary cementitious materials are effectively turning the world’s biggest emitting material into a durable storage medium. Durability of storage in concrete is measured in centuries, which puts it in the same permanence tier as geologic injection.
The residual-only frame matters here too. Cement decarbonisation is CDR-adjacent only when the captured CO2 comes from unavoidable process emissions, not from firing the kiln with coal that could have been replaced.
What’s next
Two things I am watching. First, whether the UK’s next removals consultation adopts the Tyndall-style residual-emissions framing or a looser definition that lets engineered removals substitute for near-term cuts. Second, whether any pure-play remover crosses the 500-employee mark in the next 18 months. That threshold is where enabling-layer dominance in the CDR labor market starts to shift.