Methodological Challenges
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How much carbon is stored in a tree depends on factors like geographical location, species, soil type, climate etc. To ensure that no overestimation is made on the carbon stored by the forest, CarbonFix has set different safeguards:
Conservative approach
All parameters used for the determination of the net CO2-fixation must be derived from the best available scientific sources. In their synergy, they must lead to a conservative calculation approach. This means that in case of uncertainties:
- the CO2-fixation should be underestimated, and
- the baseline and leakage should be overestimated
Cabon pool “harvested wood”
Some CarbonFix projects produce timber. This timber generally has additional climate effects, which, however, are NOT accounted for by the standard's methodology.
What are typical positive effects from harvested wood?
- Wood is used for furniture and as building material. Such use stores carbon for much longer than the time of the climate project.
- Wood can be used to replace energy intensive materials, e.g. using wooden window frames instead of aluminum frames.
- Wood is a direct substitute for fossil fuels, e.g. using pellets to heat a home rather than oil.
To ensure that the carbon stays in the trees, CarbonFix certified projects are being monitored by third-party auditors up to 50 years after planting. Observed shortfalls must either be compensated by planting additional trees or through buying the shortage of credits from other projects.
When these possibilities are exhausted, the carbon credits of the carbon buyers are compensated by credits of the CarbonFix buffer. This buffer is an insurance pool, where 30% of all credits from CarbonFix certified projects are payed in.
See point above "Monitoring over 50 years".
A carbon credit is only worth its money, when its additionality has been proven. The term additionality is used to explain the fact that trees have been planted only due to the additional means provided from the sales of the carbon credits.
CarbonFix therefore uses the additionality test provided by the Climate Secretariat of the UN. Although CarbonFix still sees room for improvement for this tool, it is currently seen as the best way to measure additional carbon reductions.