The Responsible Sourcing Scheme (RSS) has confirmed that it will shortly publish Version 11 of its Working Document, marking a significant evolution in how environmental impact is measured and communicated across the growing media and horticultural supply chain.
A key change within Version 11 is RSS’s intention to transition core environmental measurement from energy use to carbon footprinting, reflecting the increasing need for clearer, more meaningful climate impact data.
Why the move from energy to carbon?
Historically, energy use has been an important indicator of environmental performance. However, RSS recognises that energy alone does not tell the full story.
By moving towards carbon-based measurement, RSS aims to:
- Provide a more accurate picture of environmental impact, accounting for energy source, efficiency, and emissions intensity
- Improve comparability across materials and suppliers, regardless of geography or production method
- Align more closely with retailer, brand, and regulatory expectations, which are increasingly carbon-led rather than energy-led
- Support evidence-based decision-making, enabling members to prioritise meaningful emission reductions rather than headline energy figures
Supporting improvement, not just reporting
RSS emphasises that this change is not about increasing administrative burden, but about driving better outcomes. Carbon measurement allows members to:
- Identify genuine hotspots within their operations and supply chains
- Track progress over time using a common, internationally understood metric
- Demonstrate credible improvement pathways to customers, auditors, and stakeholders
Version 11 will continue RSS’s principle of continuous improvement, ensuring that measurement frameworks evolve alongside scientific understanding, market expectations, and sustainability best practice.
Looking ahead
Further guidance will accompany the release of Version 11 to support members through the transition, ensuring consistency, transparency, and practicality in application.
The Responsible Sourcing Scheme remains committed to providing a robust, credible and forward-looking framework that supports responsible sourcing, environmental stewardship, and long-term industry resilience.
About the Responsible Sourcing Scheme (RSS)
The Responsible Sourcing Scheme (RSS) is an independent, not-for-profit assurance scheme promoting responsible sourcing and continuous improvement across the growing media and horticultural supply chain through robust assessment, independent auditing, and transparent reporting.
For further information please contact Andy Smith
E: info@responsiblesourcing.org.uk
W: responsiblesourcing.org.uk