In June 2009, Marlboro Township Municipal Utilities Authority (MTMUA) deployed a 900 kW solar power array from Sharp that will enable the MTMUA to meet nearly 40% of its electricity needs with emissions-free solar-generated power. This is considered one of the largest of its kind in the East. This solar energy system will reduce New Jersey CO2 emissions by more than annually; SO2 emissions by ; and NO2 emissions by ., as well as eliminating significant amounts of mercury. Additionally, Marlboro has been recognized as a "Cool City" by the Sierra Club. Marlboro is the 10th Monmouth County municipality to be named a Cool City.