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Environment and inputs

Use Python 3.11–3.13 (>=3.11,<3.14). On macOS/Linux, create an empty workspace and virtual environment with an available supported interpreter:

Terminal window
mkdir -p reeds-example && cd reeds-example && python3.12 -m venv .venv && source .venv/bin/activate

On Windows, activate the environment with .venv\Scripts\Activate.ps1 in PowerShell. Keep the environment active for installation and every Python example. Follow installation next.

A Python project environment and r2x-cli’s managed runtime are separate. Install the plugin in the environment that will execute it. The CLI installation path is on the installation page; it does not require a project checkout.

The ReEDS model produces the source runs. You need matching input/output files, a solve year and a weather year. Keep a copy: parser input upgrades can change files. The fixture tutorial downloads sample data separately and requires curl; the wheel does not include those fixtures. No target-model license is needed for parsing and inspection.