Overview
When you run a scenario in Scenario Builder, it progresses through several stages. Each stage has a status that indicates the current state of your run. This page explains what each status means and what actions you should take.Build Statuses
Draft
Your scenario has been created but not yet submitted for building. This is the only point at which you can still modify scenario inputs, via the template files.Building
The model is being built from your scenario inputs. This process validates and assembles all the data required for the optimization run.Build Complete
The model has been built successfully and is ready to proceed to the solve stage.Failed
The model build did not complete successfully. This typically occurs when:- Scenario inputs could not be assembled or validated correctly
- There are technical issues with data processing
Solve Statuses
Solving
The optimization solver is running to find the optimal solution for your scenario.Solve Complete
The solver has successfully completed and found a solution. The run will proceed to process and save the results.Queued
Large models require additional compute capacity. Your solve is queued and will start automatically. This may take a few minutes.Infeasible
The model has been built successfully, but the solver determined that there is no possible solution to satisfy all the constraints. What to do: This is a user issue. Check for conflicting inputs and re-run the model. Common causes include:- Conflicting constraints (e.g., high demand growth with limited generation capacity)
- Overly strict emissions targets
- Conflicting targets that cannot be met simultaneously
- Insufficient build rates or potentials for required technologies
Failed
The optimization run failed for a technical reason other than infeasibility. This can occur due to:- Solver errors
- Timeout issues
- Other technical problems during the solve process
Results Statuses
Finishing Up
The solve was completed successfully, and the results are being processed and saved.Done
The run has completed successfully. All results have been processed and saved, and you can now view and analyze them.Failed
The solve was completed, but the results could not be processed and saved. What to do: This is a technical/backend issue. Contact support@transitionzero.org for assistance.Summary
| Status | Description |
|---|---|
| Draft | Scenario is created but not submitted; inputs can still be modified via template files. |
| Building | The model is being built, validating and assembling all required data. |
| Build Complete | The model has been built successfully and is ready for the solve stage. |
| Solving | The optimization solver is running to find the optimal solution. |
| Solve Complete | The solver found a solution and is proceeding to process results. |
| Queued | The solve is waiting for compute capacity and will start automatically. Large scenarios may be queued for an extended period. |
| Infeasible | No possible solution satisfies all constraints; requires user adjustment of inputs. |
| Finishing Up | The solve was successful, and results are being processed and saved. |
| Done | The run is complete, and results are ready for viewing and analysis. |
| Failed | A technical/backend error occurred during building, solving, or saving results. |