Telefonica is a Spanish multinational telecommunications company that operates in the wireless telecommunications sector. With over 346 million customers worldwide, Telefonica is one of the largest telecommunications companies in the world. The company operates in Europe, Latin America, and Asia, providing a range of services including mobile and fixed-line telephony, broadband, and digital services.

In recent years, Telefonica has made a significant commitment to decarbonisation and renewable energy. The company has set ambitious targets to reduce its carbon footprint and increase its use of renewable energy sources. Telefonica has recognised that the telecommunications industry is a significant contributor to global greenhouse gas emissions, and it has taken steps to address this issue.

One of the key ways that Telefonica is reducing its carbon footprint is through corporate energy management. The company has implemented a range of measures to improve energy efficiency in its operations, including the use of energy-efficient technologies and the optimisation of its data centres. Telefonica has also implemented a range of energy-saving measures in its offices, such as the use of LED lighting and the installation of energy-efficient heating and cooling systems.

In addition to energy efficiency measures, Telefonica is also investing in renewable energy sources. The company has set a target to source 50% of its electricity from renewable sources by 2020, and it is on track to achieve this goal. Telefonica has signed a number of corporate power purchase agreements (PPAs) with renewable energy providers, which allow the company to purchase renewable energy at a fixed price over a long-term period. These agreements provide a stable source of renewable energy for Telefonica, while also supporting the development of new renewable energy projects.

Telefonica has also invested in its own renewable energy projects. The company has installed solar panels on the roofs of its buildings, which generate electricity for use in its operations. Telefonica has also invested in wind farms in Spain and Brazil, which provide a significant source of renewable energy for the company.

In addition to its own operations, Telefonica is also working to promote decarbonisation and renewable energy in the wider telecommunications industry. The company is a member of the Renewable Energy Buyers Alliance (REBA), a group of companies that are committed to purchasing renewable energy and accelerating the transition to a low-carbon economy. Telefonica is also a signatory to the RE100 initiative, which is a global campaign to encourage companies to source 100% of their electricity from renewable sources.

Telefonica's commitment to decarbonisation and renewable energy is not only good for the environment, but it also makes good business sense. By reducing its energy consumption and sourcing renewable energy, Telefonica is reducing its operating costs and improving its bottom line. The company is also positioning itself as a leader in the telecommunications industry, which is increasingly focused on sustainability and environmental responsibility.

In conclusion, Telefonica is a Spanish multinational telecommunications company that operates in the wireless telecommunications sector. The company has made a significant commitment to decarbonisation and renewable energy, and it is implementing a range of measures to reduce its carbon footprint and increase its use of renewable energy sources. Telefonica's focus on sustainability and environmental responsibility is not only good for the environment, but it also makes good business sense, and it positions the company as a leader in the telecommunications industry.