The Baltimore Ravens are a professional American football team based in Baltimore, Maryland. They are a member of the National Football League (NFL) and compete in the American Football Conference (AFC) North division. The team was founded in 1996, and since then, they have established themselves as one of the most successful franchises in the NFL. The Ravens have won two Super Bowl championships, in 2000 and 2012, and have made the playoffs 12 times in their 25-year history.

As a professional sports team, the Baltimore Ravens have a significant impact on the environment, particularly in terms of energy consumption and carbon emissions. The team's home stadium, M&T Bank Stadium, has a seating capacity of over 70,000 and hosts eight regular-season home games per year, as well as potential playoff games. The stadium also hosts other events throughout the year, such as concerts and college football games, which further increase its energy usage.

In recent years, the Baltimore Ravens have taken steps to reduce their carbon footprint and promote sustainability. One of the ways they have done this is through decarbonisation, which involves reducing or eliminating the use of fossil fuels and transitioning to renewable energy sources. In 2018, the team announced a partnership with Constellation, a subsidiary of Exelon Corporation, to power M&T Bank Stadium with 100% renewable energy. Under the agreement, the stadium will be powered by wind energy from a nearby project in Pennsylvania, which is expected to offset approximately 3,000 metric tons of carbon dioxide emissions per year.

In addition to using renewable energy, the Baltimore Ravens have also implemented corporate energy initiatives to reduce their overall energy consumption. For example, they have installed energy-efficient LED lighting throughout the stadium, which has reduced energy usage by up to 60%. They have also implemented a recycling program to reduce waste and promote sustainability.

Another way the Baltimore Ravens have promoted renewable energy is through corporate power purchase agreements (PPAs). A 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 at a fixed price for a set period of time. In 2019, the Baltimore Ravens signed a PPA with Constellation to purchase renewable energy from a solar project in Virginia. The agreement will provide the team with approximately 3.3 million kilowatt-hours of renewable energy per year, which is equivalent to the energy usage of over 300 homes.

Overall, the Baltimore Ravens have demonstrated a commitment to sustainability and reducing their carbon footprint. Through decarbonisation, corporate energy initiatives, and corporate PPAs, they have taken concrete steps to promote renewable energy and reduce their impact on the environment. As a professional sports team with a large fan base, the Baltimore Ravens have the potential to inspire others to follow their lead and promote sustainability in their own communities.