Solution for Scope 3 Carbon Accounting and Supply Chain Engagement.
Delivering Measurable Emissions Reduction: With ctrl+s, companies build a credible upstream Scope 3 baseline, improve data quality, and run supplier engagement programs at scale.
Rated by the Scope 3 Peer Group
Trusted by +45 Industry Leaders
Product
Built to Deliver from Baseline to Supplier Action.
Carbon Accounting: A defensible upstream Scope 3 baseline with decision-ready hotspots.
Supplier Engagement: Engage, compare, and steer every supplier – built for reduction at scale.
Use Cases
From Data to Measurable Reduction
Establish Upstream Scope 3 Visibility
A defensible first baseline from your existing procurement data – in weeks, not months.
Improve Scope 3 Data Quality
From spend-based estimates to supplier-specific data, where emissions weight is highest.
Start Supplier Engagement
A repeatable supplier workflow – not a one-off project.
Scale Supplier Performance
Supplier performance steering, operationalized – from central oversight to individual buyer action.
Customers
What Our Customers Say
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
The ctrl+s team provides us with reliable carbon data and high-quality advice for years now – always objective and state-of-the-art.
Jens Plambeck
Bayer AG
Effective consulting needs actionable data. Actionable data needs a capable partner like ctrl+s
Kordula Wick
Systain
Our clients are pioneers on carbon reduction. ctrl+s data and tools are an important step on their journey towards decarbonization.
Florian Sommer
Capgemini
With ctrl+s we were able to calculate our supply chain emissions and prepare for public disclosure in no time.
Jannis Nacke
ENERVIE – Südwestfalen Energie und Wasser AG
ctrl+s has the expertise that turns value chain analyzes into a magnifying glass of economic relationships.
Prof. Dr. Mario Schmidt
Institut f. Industrial Ecology – INEC Hochschule Pforzheim
Start Delivering on Scope 3.
In a personalized demo, our Scope 3 experts show how ctrl+s closes the gap from measurement to real reduction – and helps you deliver on your Scope 3 goals across categories, suppliers, and teams.