| At Carbon Standards International, it is essential that the emissions from the production and processing of biochar are accounted for and offset before the C-sink is registered. We therefore require two methane measurements at the production facility (Chapter 7.3. of the Global Biochar C-Sink Standard). In addition to the direct methane measurement, we now also accept TOC, CxHy and CO measurements. We recommend that producers measure CH₄ emissions directly.
Please note that due to the inherent uncertainties of proxies, safety margins are significantly higher when CH₄ emissions are calculated from proxies rather than measured directly.
The clarification document furthermore clarifies frequently asked questions regarding methane measurements:
✅ Methane measurement strategy must be submitted in advance to Carbon Standards International for review.
✅ Two independent measurements of at least 1 hour must be conducted. It may be necessary to adapt this specification for batch systems.
✅ Next to methane, the following parameters have to be measured:
a. feedstock input flow (DM)
b. biochar output flow (DM)
c. exhaust gas volume flow
d. CO concentration
✅ Measurements should be conducted during regular operation. |
