Yahoo! Inc. is a multinational technology company based in the United States of America. The company operates in the investment management sector, with a focus on providing digital services to its clients. Yahoo! was founded in 1994 by Jerry Yang and David Filo, and it quickly became one of the most popular search engines on the internet. The company has since expanded its services to include email, news, finance, and sports, among others.

In recent years, Yahoo! has made a commitment to decarbonisation and the use of renewable energy in its operations. The company has set a goal to reduce its greenhouse gas emissions by 50% by 2035, and it has taken several steps to achieve this goal. One of the ways that Yahoo! is reducing its carbon footprint is through the use 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 from the provider over a specified period of time. By entering into a PPA, companies like Yahoo! can secure a stable, long-term supply of renewable energy at a fixed price, which can help them to reduce their carbon footprint and save money on energy costs.

Yahoo! has entered into several corporate PPAs for renewable energy in recent years. In 2015, the company signed a 15-year PPA with a wind farm in Texas, which will provide Yahoo! with 50 megawatts of renewable energy. The following year, Yahoo! signed a 10-year PPA with a solar farm in Virginia, which will provide the company with 200 megawatts of renewable energy. These PPAs will help Yahoo! to reduce its greenhouse gas emissions by over 700,000 metric tons over the lifetime of the contracts.

In addition to its use of corporate PPAs, Yahoo! is also investing in corporate energy efficiency measures to reduce its energy consumption and carbon footprint. The company has implemented a number of energy-saving measures in its data centers, including the use of energy-efficient servers, cooling systems, and lighting. Yahoo! has also implemented a program to encourage its employees to reduce their energy consumption at work and at home.

Yahoo! has also taken steps to reduce its carbon footprint through its corporate operations. The company has implemented a number of sustainability initiatives, including the use of electric vehicles for its corporate fleet, the installation of solar panels on its corporate headquarters, and the use of green building materials in its construction projects. Yahoo! has also implemented a program to reduce waste and increase recycling in its offices.

Overall, Yahoo! is a company that is committed to decarbonisation and the use of renewable energy in its operations. The company's use of corporate PPAs and energy efficiency measures is helping it to achieve its goal of reducing its greenhouse gas emissions, while also saving money on energy costs. Yahoo!'s sustainability initiatives demonstrate its commitment to corporate responsibility and its role in addressing climate change.