The Scottish Government has set a target for Scotland to reach net zero by 2045. Many public sector organisations have also adopted their own net zero targets, with 2030 being a common milestone.

Emissions associated with the purchase of goods, services and works are classified as Scope 3 emissions. Although these indirect emissions are not generated directly by public sector organisations, they can account for more than 70% of a public body’s greenhouse gas emissions. As a result, tackling supply chain emissions is a critical part of achieving net zero.

The public sector has significant purchasing power, which can be used to influence suppliers. Sustainability requirements, net zero targets and environmental policies can be incorporated into procurement processes, encouraging suppliers to reduce emissions across their operations. Although supply chains may be geographically and operationally distant from public bodies, procurement decisions can play an important role in driving supply chain decarbonisation.

This section explains why public bodies should address transport-related emissions within their supply chains, including:

• Freight transport associated with purchased goods.
• Transport emissions generated by suppliers through their day-to-day operations, such as company cars.
• Outsourced transport services, including taxis and buses.

It also explores how public bodies can reduce supply chain emissions using resources and guidance provided by the Scottish Government, alongside case studies that demonstrate good practice in sustainable procurement.