NREL-PSM3-2-EPW

A script and Streamlit app that writes out EPW files from NREL Physical Solar Model (PSM) v3.2.2 (and v4.0.0 API).

Features

• EPW Conversion: Converts NREL solar data to EnergyPlus Weather format.
• Streamlit App: User-friendly interface for downloading data.
• Secure: API keys are managed via Streamlit secrets and verified with hash checks.
• Modern Stack: Built with uv for dependency management and ruff for code quality.

Project Structure

• app/: Contains the Streamlit application code.
  • streamlit_app.py: Main entry point.
  • .streamlit/secrets.toml: (Not committed) Stores your API key.
• nrel_psm3_2_epw/: Core transformation logic.
• tests/: Unit tests (100% coverage).

How to Run Locally

1. Install dependencies with uv:

   uv sync --extra dev

2. Configure API Key:

   • Create app/.streamlit/secrets.toml:

     APIKEY = "YOUR_NREL_API_KEY"

   • Note: The app verifies the default API key integrity.

3. Run the App:

   uv run streamlit run app/streamlit_app.py

   (Windows users can use run_streamlit.bat)

4. Run Tests:

   uv run pytest

5. Lint & Format:

   uv run ruff check --fix .
   uv run ruff format .

Demo

• Link to demo