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Energy Saving Benefits –Tree Size, Tree Mortality & Growth Rate Factors

All trees were grouped into three categories according to the tree size at tree maturity: Small (which grows up to 25 ft in height), Medium (which grows up to 45 ft in height) and Large (which grows up to at least 46 ft in height). The age of the tree from the planting date will also vary depending on the tree size: from 1 to 30 years for Small trees, from 1 to 40 years for Medium trees and from 1 to 50 years for Large trees.

The assigned age of the Program Tree (trees planted by utilities) will then determine the tree growth rate factor and the tree survival rate factor (incorporating the assumed tree mortality rate), which will then determine together the level of energy saving benefits for any year. In other words, the combination of the tree size, tree growth rate and the tree survival rate will determine the final multiplier factor that will estimate the appropriate level of energy saving tree benefits for any year.

In order to estimate the energy saving tree benefits for the Program Trees (trees planted by utilities) for any tree size and age, the Tree Benefits Estimator will multiply the energy, capacity and evapotranspiration benefit values of MATURE trees with the appropriate Tree Size, Tree Growth and Survival Rate FACTOR values. However, for the existing trees (which are currently alive), the Tree Benefits Estimator will NOT incorporate into the calculations the assumed tree mortality rate (only the tree age is incorporated).

Click here to view the Energy Saving Benefits graphs in terms of Tree Mortality & Growth Rate Factors for each Tree Size (Small, Medium and Large)

Click here to display Tree Mortality & Growth Rate Factor for SMALL Tree for Energy Saving Benefits of Program Trees
Click here to display Tree Mortality & Growth Rate Factor for MEDIUM Tree Energy Saving Benefits of Program Trees
Click here to display Tree Mortality & Growth Rate Factor for LARGE Tree Energy Saving Benefits of Program Trees