TalkTalk is a telecommunications company based in the United Kingdom that provides wireline internet services to its customers. The company was founded in 2003 and has since grown to become one of the largest providers of broadband services in the UK. TalkTalk has a customer base of over 4 million people and is known for its affordable pricing and reliable service.

As a company operating in the wireline internet services sector, TalkTalk is acutely aware of the importance of decarbonisation and renewable energy. The company has made a commitment to reducing its carbon footprint and has implemented a number of initiatives to achieve this goal.

One of the key ways that TalkTalk is working towards decarbonisation is through its corporate energy strategy. The company has set a target to reduce its carbon emissions by 80% by 2025, and is working to achieve this through a combination of energy efficiency measures and the use of renewable energy sources.

One of the ways that TalkTalk is using renewable energy is through the implementation of corporate power purchase agreements (PPAs). These agreements allow the company to purchase renewable energy directly from a supplier, which helps to reduce its carbon footprint and support the growth of the renewable energy sector.

TalkTalk has already signed a number of corporate PPAs with renewable energy suppliers, including a 15-year agreement with ScottishPower Renewables for the supply of wind power. This agreement will provide TalkTalk with 100% renewable electricity for its UK operations, and is expected to reduce the company's carbon emissions by over 50,000 tonnes per year.

In addition to its use of renewable energy, TalkTalk is also working to improve the energy efficiency of its operations. The company has implemented a number of measures to reduce its energy consumption, including the installation of energy-efficient lighting and the use of virtualisation technology to reduce the number of physical servers required.

TalkTalk has also implemented a number of initiatives to encourage its customers to reduce their carbon footprint. The company offers a range of energy-efficient broadband routers and encourages customers to switch to paperless billing to reduce their environmental impact.

Overall, TalkTalk is a company that is committed to decarbonisation and the use of renewable energy. Through its corporate energy strategy and the use of corporate PPAs, the company is working to reduce its carbon footprint and support the growth of the renewable energy sector. With its focus on energy efficiency and customer engagement, TalkTalk is a leader in the telecommunications industry when it comes to sustainability and environmental responsibility.