The Greater Rockford Airport Authority (GRAA) is a public agency that operates the Chicago Rockford International Airport (RFD) in Rockford, Illinois. The airport serves as a hub for cargo and passenger transportation in the region, and is a key driver of economic growth in the area. The GRAA is committed to sustainability and has implemented a number of initiatives to reduce its carbon footprint and promote renewable energy.

Decarbonisation is a key priority for the GRAA, and the airport has set ambitious targets to reduce its greenhouse gas emissions. The GRAA has committed to achieving net-zero carbon emissions by 2050, and has developed a comprehensive plan to achieve this goal. The plan includes a range of measures, including energy efficiency improvements, the use of renewable energy, and the adoption of low-emission vehicles and equipment.

One of the key strategies for achieving decarbonisation at the airport is the adoption of corporate power purchase agreements (PPAs) for renewable energy. A corporate PPA is a contract between a company and a renewable energy provider, in which the company agrees to purchase a certain amount of renewable energy over a specified period of time. The GRAA has signed a number of corporate PPAs for wind and solar energy, which will help to reduce the airport's reliance on fossil fuels and lower its carbon emissions.

In addition to corporate PPAs, the GRAA has also implemented a range of other initiatives to promote renewable energy. The airport has installed solar panels on the roof of its terminal building, which generate clean energy to power the airport's operations. The GRAA has also partnered with local utilities to develop community solar projects, which allow residents and businesses in the area to purchase renewable energy at a lower cost.

Corporate energy management is another key focus for the GRAA. The airport has implemented a range of energy efficiency measures, such as LED lighting and HVAC upgrades, to reduce its energy consumption and lower its operating costs. The GRAA has also developed an energy management system to monitor and optimize its energy use, which has helped to identify opportunities for further energy savings.

The GRAA has also implemented a range of measures to promote sustainable transportation at the airport. The airport has installed electric vehicle charging stations, and has replaced its fleet of diesel-powered ground support equipment with electric alternatives. The GRAA has also partnered with local transit agencies to provide public transportation options to and from the airport, which helps to reduce the number of cars on the road and lower emissions.

Overall, the Greater Rockford Airport Authority is a leader in sustainability and renewable energy in the aviation industry. The GRAA's commitment to decarbonisation, corporate energy management, corporate PPAs, and renewable energy has helped to reduce its carbon footprint and promote a more sustainable future. As the airport continues to grow and expand, it will be important for the GRAA to continue to prioritize sustainability and renewable energy in its operations.