J Sainsbury plc is a British multinational supermarket chain that operates in the Supermarkets sector. The company was founded in 1869 by John James Sainsbury and his wife Mary Ann Sainsbury. It is headquartered in London, United Kingdom, and has over 1,400 stores across the country.

J Sainsbury plc has been committed to decarbonisation and corporate energy for many years. The company has set ambitious targets to reduce its carbon emissions and increase its use of renewable energy sources. In 2019, J Sainsbury plc became the first UK supermarket to pledge to become Net Zero by 2040, which means that it aims to reduce its carbon emissions to zero by that year.

To achieve this goal, J Sainsbury plc has implemented a range of initiatives to reduce its carbon footprint. The company has invested in energy-efficient technologies, such as LED lighting and refrigeration systems, and has installed solar panels on the roofs of some of its stores. J Sainsbury plc has also introduced measures to reduce food waste, such as donating surplus food to charities and using anaerobic digestion to generate energy from food waste.

In addition to these measures, J Sainsbury plc has also entered into corporate power purchase agreements (PPAs) to increase its use of renewable energy. A corporate PPA is a long-term contract between a company and a renewable energy provider, which guarantees the purchase of a fixed amount of renewable energy over a specified period. J Sainsbury plc has signed several corporate PPAs with wind and solar energy providers to increase its use of renewable energy.

One of J Sainsbury plc's most significant renewable energy projects is its partnership with E.ON to build a 100MW wind farm off the coast of Scotland. The wind farm, which is expected to be operational by 2023, will generate enough renewable energy to power all of J Sainsbury plc's stores, offices, and distribution centers in the UK. The wind farm will also help the company to achieve its Net Zero target by reducing its carbon emissions by over 1 million tonnes per year.

J Sainsbury plc's commitment to decarbonisation and renewable energy has not only helped the company to reduce its carbon footprint but has also had a positive impact on its bottom line. The company has saved millions of pounds on energy costs by investing in energy-efficient technologies and signing corporate PPAs. In 2020, J Sainsbury plc announced that it had achieved a 7.8% reduction in carbon emissions compared to the previous year, despite an increase in sales.

J Sainsbury plc's commitment to decarbonisation and renewable energy has also been recognized by external organizations. In 2020, the company was ranked as the top UK supermarket in the Carbon Disclosure Project's (CDP) annual climate change report. The CDP is an international organization that assesses companies' environmental performance and transparency.

In conclusion, J Sainsbury plc is a British multinational supermarket chain that has demonstrated a strong commitment to decarbonisation and renewable energy. The company has set ambitious targets to reduce its carbon emissions and increase its use of renewable energy sources. J Sainsbury plc has implemented a range of initiatives to reduce its carbon footprint, including investing in energy-efficient technologies, reducing food waste, and signing corporate PPAs. The company's commitment to decarbonisation and renewable energy has not only helped it to reduce its carbon footprint but has also had a positive impact on its bottom line. J Sainsbury plc's efforts have been recognized by external organizations, which have ranked the company as a leader in environmental performance and transparency.