The Impact Score represents your net “carbon footprint”, since joining Treekly.
To keep your Impact Score needle above zero, which represents “carbon neutral”, you need to plant 4 trees per week on average.
4 mangrove trees will capture an estimated 200kg of CO2, which “counterbalances” typical weekly adult emissions of 200kg of CO2e.
The Impact Score is calculated as the % difference between…
(A) Estimated CO2e from your carbon footprint since joining Treekly, based on average adult emissions 200kg per week (10 tonnes carbon footprint per annum)
versus
(B) Estimated CO2 your trees will capture by Year 2030, based on a conservative figure of 50kg per tree. (Mangrove trees capture an average 308kg over the first 25 years of their growth. Year 2030 is widely recognised as a critical turning point for planet Earth)
Example figures…
User X has been a member for 5 weeks, and planted 25 trees.
5 weeks = 1000kg CO2e of adult carbon emissions
25 trees = 1250kg CO2 to be captured by Year 2030
1250 is 25% higher than 1000, meaning a score of +25
