Chattanooga Metropolitan Airport Authority (CMAA) is a public airport located in Hamilton County, Tennessee, United States. The airport is owned and operated by the Chattanooga Metropolitan Airport Authority, which was established in 1974. CMAA is the fourth busiest airport in Tennessee, serving over 500,000 passengers annually. The airport operates in the Air Transp Support Services sector and is committed to decarbonisation, corporate energy, corporate PPA, and renewable energy.

Decarbonisation is a key focus area for CMAA. The airport has set a goal to achieve net-zero carbon emissions by 2040. To achieve this goal, CMAA has implemented several initiatives, including the installation of a 2.64 MW solar array on the airport's grounds. The solar array generates approximately 3.5 million kWh of electricity annually, which is equivalent to the energy consumption of 300 homes. The airport has also implemented energy-efficient lighting, heating, and cooling systems, which have reduced energy consumption by 30%.

Corporate energy is another area of focus for CMAA. The airport has implemented a comprehensive energy management program that includes energy audits, energy-efficient equipment upgrades, and employee training. The program has resulted in significant energy savings and cost reductions. CMAA has also partnered with local utilities to implement demand response programs, which allow the airport to reduce energy consumption during peak demand periods.

Corporate power purchase agreements (PPAs) are an important part of CMAA's renewable energy strategy. The airport has entered into a 20-year PPA with a local utility to purchase 10 MW of solar energy. The PPA will provide the airport with a reliable source of renewable energy and help to reduce its carbon footprint. CMAA has also partnered with local businesses to develop community solar projects, which allow residents and businesses to purchase renewable energy from the airport's solar array.

Renewable energy is a key focus area for CMAA. The airport has set a goal to generate 25% of its electricity from renewable sources by 2025. In addition to the solar array and corporate PPA, CMAA has implemented a wind power purchase agreement, which provides the airport with 10% of its electricity from wind energy. The airport has also implemented a biomass heating system, which uses wood chips to heat the airport's terminal building.

In addition to its renewable energy initiatives, CMAA is committed to reducing its overall environmental impact. The airport has implemented a comprehensive recycling program, which includes recycling bins throughout the terminal building and on the airport's grounds. The airport has also implemented a water conservation program, which includes the installation of low-flow fixtures and the use of drought-resistant landscaping.

CMAA is committed to sustainability and has received several awards and certifications for its environmental initiatives. The airport has been recognized by the Federal Aviation Administration (FAA) for its leadership in environmental sustainability and has received the FAA's "Airport Carbon Accreditation" certification. CMAA has also been recognized by the Airports Council International (ACI) for its sustainability initiatives and has received the ACI's "Airport Carbon and Energy Management" certification.

In conclusion, Chattanooga Metropolitan Airport Authority (CMAA) is a public airport located in Hamilton County, Tennessee, United States. The airport operates in the Air Transp Support Services sector and is committed to decarbonisation, corporate energy, corporate PPA, and renewable energy. CMAA has implemented several initiatives to achieve its sustainability goals, including a 2.64 MW solar array, energy-efficient lighting, heating, and cooling systems, and a comprehensive energy management program. The airport has also entered into corporate power purchase agreements (PPAs) to purchase renewable energy and has set a goal to generate 25% of its electricity from renewable sources by 2025. CMAA is committed to reducing its overall environmental impact and has received several awards and certifications for its sustainability initiatives.