b'3 2019 SUSTAINABILITY HIGHLIGHTS REPORTENERGY & GREENHOUSE GAS EMISSIONSBTV actively seeks to reduce its energy consumption, even as operations at the Airport expand, and it continues to demonstrate leadership in sustainable energy performance. Energy savings are made possible through local partnerships with entities such as the Burlington Electric Department, the first municipal electric department to source 100 percent of its electricity from renewable sources.Daily operations and construction activities at BTV are powered primarily by a combination of electricity from the Burlington Electric Department and natural gas from Vermont Gas Systems. Other fuels such as diesel and gasoline power the vehicle fleet and equipment that support the Airports operations and Jet-A and Avgas generally power the aircraft that operate at the Airport. Between 2013 and 2017, BTV reduced its utility-sourced electricity consumption by 12.4percent. This is in large part due to energy efficiency projects completed at the Airport.1,183,000 $147,750kWh per yearin annual savingsAvoided annual electricity usage as a result ofCost savings from the nearly 1.2 million recent energy-efficient upgrades at BTV. kilowatt-hours (kWh) avoided in annual electricity consumption.The Airport boasts several renewable energy PHOTO CREDIT: DAVID CARMAN systems, including the utility-scale solar PV array on the roof of the parking garage. This 2,000 panel, 500-kW system was installed at a cost of $1.5 million in 2015, but is expected to generate a savings of $3.5 million over the following three decades. Since its installation, this solar PV array generates on average 613,000 kWh per yearenough to supply power for almost 100homes in Vermont annually. In 2017, the parking garage solarPV array provided 11 percent of theAirports total electricity.'