Allen & Overy LLP is a leading international law firm headquartered in London, United Kingdom. The firm operates in the Lawyer Offices sector and provides legal services to clients across the globe. With over 5,500 employees, including more than 2,800 lawyers, Allen & Overy is one of the largest law firms in the world.

The firm is committed to sustainability and decarbonisation, and has taken several initiatives to reduce its carbon footprint. Allen & Overy has set a target to reduce its carbon emissions by 50% by 2030, and has already achieved a 30% reduction in emissions since 2015. The firm has also implemented a range of measures to reduce energy consumption, such as upgrading lighting and HVAC systems, and encouraging employees to use public transport or cycle to work.

Allen & Overy is also a leader in advising clients on corporate energy and renewable energy projects. The firm has a dedicated Energy and Infrastructure practice, which advises clients on a range of matters, including project development, financing, and regulatory issues. The team has advised on some of the largest and most complex energy projects in the world, including offshore wind farms, solar power plants, and hydroelectric projects.

One of the key areas of focus for Allen & Overy is corporate power purchase agreements (PPAs). A corporate PPA is a contract between a company and a renewable energy project developer, in which the company agrees to purchase a portion of the project's energy output for a fixed period of time. Corporate PPAs are becoming increasingly popular as companies seek to reduce their carbon footprint and meet sustainability targets.

Allen & Overy has advised on several high-profile corporate PPAs, including advising Amazon on its first renewable energy project in Europe, a 50 MW solar project in Seville, Spain. The firm also advised on the first corporate PPA in the United Arab Emirates, a 648 MW solar project in Dubai.

In addition to its work on renewable energy projects, Allen & Overy also advises clients on a range of other sustainability issues. The firm has a dedicated Sustainability and Climate Change practice, which advises clients on issues such as green bonds, sustainable finance, and ESG (environmental, social, and governance) reporting.

Allen & Overy has also taken several initiatives to promote sustainability within its own operations. The firm has implemented a range of measures to reduce waste and promote recycling, such as using reusable coffee cups and water bottles, and providing recycling bins throughout its offices. The firm has also introduced a range of sustainability training programmes for its employees, to raise awareness of environmental issues and encourage sustainable behaviours.

Overall, Allen & Overy is a leading international law firm that is committed to sustainability and decarbonisation. The firm has taken several initiatives to reduce its own carbon footprint, and is a leader in advising clients on corporate energy, corporate PPAs, and renewable energy projects. With its dedicated Energy and Infrastructure and Sustainability and Climate Change practices, Allen & Overy is well positioned to help clients navigate the complex legal and regulatory landscape of the energy and sustainability sectors.