Explore, Compare, and Optimise
eTool’s Scenario Modelling lets you test multiple design strategies side by side to discover what really drives performance.
Instead of relying on a single solution, Scenario Modelling helps you compare multiple options, from alternative materials and façade systems to energy sources, to find the most effective low-carbon design. You can model improvements across over 50 sustainability indicators, track percentage improvements, and maintain a full audit trail—so every decision is transparent, report-ready, and actionable.
Document motivations, constraints, and specifications for every scenario and feed them straight into reports for clients, teams, or rating schemes. Whether you start from the recommendations library or create your own strategies from scratch, Scenario Modelling makes it fast, flexible, and tailored to your project.
Optimise Every Design With Side-by-Side Scenarios

Compare Multiple Design Strategies
Simultaneously model different materials, systems, or energy options to identify the most effective, low-carbon outcome for your project.
Data-Driven Decisions
Analyse over 50 sustainability indicators, track improvements, and generate a transparent audit trail for every choice—perfect for reporting and stakeholder communication.
Fully Customisable and Report-Ready
Document scenario assumptions, constraints, and specifications, and export results easily for client presentations, team collaboration, or compliance with rating schemes.
Using eTool made what would have been a very complex process manageable and added valuable information to the project.

Richard Stokes
Sustainability Consultant
ARUP
Questions? We’ve got answers
Can I model different materials and systems?
Yes. Swap slabs, façades, energy sources, or any design element and compare the impacts side by side.
How does it help with reporting?
Scenario Modelling creates a full audit trail and lets you document motivations, constraints, and specifications for every option. You can export results in a professional, report-ready format.
Who benefits most from this feature?
Engineers, architects, and sustainability professionals who want data-driven insights to optimise designs, reduce carbon, and communicate results clearly.





