Marginal Carbon
Explorations of carbon removal, covering the market, policy, methods, and system-level thinking. By Robert Höglund.
- Indexed issues, last 90 days
- 2
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- Aug 11, 2026
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- Jul 24, 2026
Latest issues
Retire the concept of residual emissions (opens the original)
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The concept of residual emissions have played out its role. Residuals most often refers to remaining emissions to counterbalance with carbon removal at the year net zero is reached. As I explained in my latest article, they only exist because a modelled pathway assumes other mitigation alternatives won't have scaled enough by then.If CDR counted as mitigation like any other solution, residual emissions would not exist. Then there would only be emissions and carbon remova
The main thing holding carbon removal back (opens the original)
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The biggest blocker to voluntary demand for carbon removal is that it cannot fulfill near-term climate targets. As long as durable CDR is reserved for “residuals only” and not seen as equal to, for example, biofuels and CCS, it will never scale.Much has been said about how corporate climate standards treat carbon dioxide removal, but no one, myself included, has clearly written about the core issue holding CDR back: that it is the only mitigation option denied substitutability with the rest.</p
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