The amount of carbon stored will depend on the size (weight) of the tree. Mathematically speaking, one tonne of green wood biomass is equal to one tonne of carbon dioxide or one carbon credit. One hectare of trees is likely to store around 500 tonnes of carbon dioxide at its ‘average’ age (age 16) and approximately 1,000 tonnes right before harvest. To put this in context, per capita NZ emissions rest around 7 tonnes per annum, so the ‘average’ carbon storage of a one-hectare investment is enough to offset approximately 71 years of human emissions.