As biochar continues to feature in conversations around carbon, climate, and materials, the concept of permanence is often discussed in abstract terms.
In practice, permanence is not created by intention alone. It is created by use.
At Carbon Gold, our experience across soil, materials, and industrial applications has shown that the long-term value of biochar — environmentally and practically — depends less on how it is described, and more on where it ends up and how it is deployed.
Permanence is a property of systems, not just materials
Biochar is often characterised as a stable, long-lived form of carbon. That stability is real, but it is only one part of the equation.
Permanence emerges when biochar is:
A bag of biochar in storage is not permanent.
A stockpile waiting for a market is not permanent.
Permanence comes from integration, not existence.
Different uses create different forms of permanence
Biochar can achieve long-term carbon storage through a range of pathways. These pathways are not equal, but they are all valid when designed properly.
For example:
-
In soil systems, permanence comes from incorporation, aggregation, and long-term residence
-
In construction materials, permanence comes from physical encapsulation and service life
-
In industrial products, permanence comes from function and replacement cycles
In each case, permanence is a result of how biochar is used, not simply that it has been produced.
Why assumptions cause problems
Difficulties arise when permanence is assumed upstream, without a clear route to deployment downstream.
When biochar is produced without a defined end use, questions quickly emerge:
Without clear answers, permanence becomes theoretical.
This is not a failure of biochar.
It is a failure of system design.
Designing for permanence means designing for use
Across all applications, the most robust projects are those that start with use and work backwards.
That means understanding:
-
The application requirements
-
The material specifications
-
The logistics of deployment
-
The longevity of the system the biochar will enter
When these factors are considered early, permanence becomes a natural outcome rather than an assumption that must be defended later.
This approach also aligns material performance, commercial reality, and environmental benefit.
A practical perspective
As the biochar sector continues to mature, clarity around permanence will become increasingly important. Not as a headline claim, but as a design principle.
Experience shows that permanence is strongest when biochar is:
Permanence is not something added at the end of the process. It is created when biochar is used well, from the beginning.
