Trees reduce energy costs: McPherson and Simpson 2003

February 28, 2009

McPherson E.G., Simpson J.R., 2003 “Potential energy savings in buildings by an urban tree planting programme in California” Urban Forestry & Urban Greening, 2(2): 73-86(14), DOI: 10.1078/1618-8667-00025
USDA Forest Service, Pacific Southwest Research Station, Davis, CA
Location: California, USA

The ~177.3 million energy-conserving trees in California should reduce the amount of energy used for air conditioning by in a single year by 2.5% (saving US$485.8 million), and save utilities 10% (US$778.5 million) annually. If 50 million trees were planted, over a 15-year period each tree would save US$71, while the cost of planting and protecting each tree is only US$50.


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