The Co-op has committed to halving its direct emissions by 2025.
The announcement comes after it reached a previous carbon goal three years ahead of schedule.
It plans to achieve the target through a multi-million-pound investment in natural refrigeration and associated technologies, as well as installing energy efficient LED lighting.
In a bid to stay in line with the greenhouse gas reductions needed to limit rising global temperatures to below 2°C, which environmental experts warn is the threshold for some of the most dangerous impacts of climate change, the firm has also pledged to cut product-related emissions by 11%.
The Co-op says it already sources 100% of its electricity from renewable sources and is committed to improving efficiency across its business.