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Scenario Builder is a free, no-code platform for building, running, and analysing power system models. To access it, navigate to builder.transitionzero.org and sign in. New to energy system modelling? Start with our What is Scenario Builder? overview, or watch our energy system modelling 101 video.

Watch the demo

The walkthrough below covers the full journey: creating a project and scenario, editing inputs, running a model, and exploring results.

The core workflow

Every analysis in Scenario Builder follows the same five steps:
1

Create a project and scenario

A project is a container for related scenarios. When you create a scenario, you choose its geography, model type (long-term Capacity Expansion or single-year Dispatch), temporal resolution, and time horizon. See Creating a Scenario for a full walkthrough.
2

Review and edit your inputs

Each scenario starts from a calibrated base model with sensible defaults, so you can run it immediately. To customise it, edit the model inputs. See Input Data Types for what every input does, and Editing Scenarios for how to use the CSV templates.
3

Run the model

Click Run to build and solve your scenario. You can track progress through the run statuses as it moves from building to solving to results.
4

Explore the results

Once a run is Done, view charts for capacity, generation, emissions, and system cost, and download the underlying data. You can also compare scenarios side by side.
5

Ask AMP

Use the AMP AI assistant to sanity-check inputs, interpret results, debug infeasible runs, or even draft and edit scenarios from a research question.
Not sure what to model? Browse the Research Question Catalogue for worked examples that map common questions to specific Scenario Builder inputs.

Browse country models

Scenario Builder ships with calibrated models for countries and regions across Asia and beyond.
indonesia

Indonesia

Capacity Expansion · Dispatch · National and 7-node regional
india

India

Capacity Expansion · Dispatch · National and 5-node regional
apg

ASEAN Power Grid

Capacity Expansion · Dispatch · 10-node and 25-node regional
View all country models →

Need help?

If you have any questions, reach out to support@transitionzero.org.