Supplier Engagement, Engineered for Reduction.
Engage your suppliers where reduction levers live. Turn their data into procurement decisions. Track your trajectory – Tier-1 to Tier-N.
Rated by the Scope 3 Peer Group
Engage Suppliers. Enrich Your Data.
A workflow to invite, remind, and track suppliers at scale. The self-assessment is industry-specific, tuned to each supplier's business model, and capped at 19 questions. ctrl+s is free for your suppliers and returns something useful – a Carbon Reduction score, peer benchmarks, a free carbon accounting module. Submissions land in your Scope 3 inventory automatically, and flow via API into procurement, ERP, or reporting.
Steer Across Teams.
Buyers make procurement decisions; sustainability sets Scope 3 strategy. ctrl+s connects both teams to the same data – central oversight and decentralized buyer execution, on one comparable view. Supplier signals feed back into the Scope 3 inventory, so procurement and sustainability move in step – not in parallel.
Track Real Progress.
Track supplier performance over time – today, year 1, year 3 – so trajectory stays visible against SBTi commitments. As suppliers cut emissions intensity, the score moves, and so does the underlying Scope 3 inventory. AI-enriched recommendations surface the next reduction measure for each supplier, tailored to their sector and current performance.
Reach Beyond Tier-1. Their Progress Becomes Yours.
Tier-1 suppliers cascade the program to theirs – same workflow, same scoring. Many manufacturing suppliers are already on the platform, so your Tier-2 may already be there. Deep supply chain performance feeds back into your suppliers' scores and your Scope 3 inventory. Their progress becomes your progress.
Carbon Accounting
Engagement only steers reduction when it's anchored to a real inventory.
See how Carbon Accounting builds the Scope 3 baseline that supplier data feeds into.
60–70% Supplier invitation response rate – well above the industry average.
With the supplier engagement module, ctrl+s created an easy-to-use tool which allows our supplier network to develop their individual path to net-zero emissions. It gives us the opportunity to discuss and align CO2-reduction ambitions with our suppliers and to reflect them into our daily sourcing decision.
Tobias Weirich
Siemens AG
Make Supplier Engagement the Engine of Your Reduction.
Our Scope 3 experts show you how ctrl+s Supplier Engagement helps you engage your supply chain to deliver measurable carbon reduction.