r2h2 1.2.34

The Desktop App for R2H2.

R2H2

R2H2 is a desktop simulation tool for renewable hydrogen systems.

---

Install

Requires Python 3.11+. The recommended install method is pipx, which isolates the app in its own environment and puts the r2h2 command on your PATH automatically.

As a prerequisite, you'll need pip and pipx installed. To make sure you can get started, paste the following into a terminal:

pip install pipx
pipx ensurepath

If your using a new system that doesn't currently have access to Git or PIP, you may need to install these first. For Ubuntu, these instructions are as follow:

sudo apt install git
sudo apt install pip

1 — Install as a general user (pipx)

pipx install git+https://github.com/RenewableTools/R2H2_app.git

Open a new terminal, then run:

r2h2

To update to the latest version at any time:

pipx upgrade r2h2

---

2 — Install for development (editable)

git clone https://github.com/RenewableTools/R2H2_app.git
cd R2H2_app
pipx install -e .

After editing source files the running app picks up changes immediately — no reinstall needed. Use pipx upgrade r2h2 (pointing at the local path) or simply re-run pipx install -e . after pulling updates.

---

Getting started

On first launch R2H2 will ask you to choose a local folder for your application data (database, wind files, outputs). The folder will be created if it does not exist. This path is stored in config.yaml and you will not be prompted again.

r2h2          # starts the local server and opens the app in your browser

Use Ctrl+C in the terminal to stop the server.

---

Notes

• Application data (database, outputs) lives in the folder you chose at first launch — not inside the source code directory.
• The database schema is defined entirely by dashboard/models.py; use Django migrations (python manage.py makemigrations && python manage.py migrate) if you change it.
• A useful tool for inspecting the SQLite database: https://sqlitebrowser.org

Documentation

• Dynamic controller guide: docs/dynamic_controller_user_guide.md