r2x-core 0.3.1

Extensible framework for building power system model translators with plugin architecture

r2x-core

Extensible framework for power system model translation

R2X Core is a model-agnostic framework for building power system model translators. It provides the core infrastructure, data models, plugin architecture, and APIs that enable translation between different power system modeling platforms.

About R2X Core

R2X Core serves as the foundation for building translators between power system models like ReEDS, PLEXOS, SWITCH, Sienna, and more. It provides a plugin-based architecture where you can register parsers, exporters, and transformations to create custom translation workflows.

Features

• Plugin-based architecture - Singleton registry with automatic discovery and registration of parsers, exporters, system modifiers, and filters
• Standardized component models - Power system components via infrasys
• Multiple file format support - Native support for CSV, HDF5, Parquet, JSON, and XML
• Type-safe configuration - Pydantic-based PluginConfig for model-specific parameters with defaults loading
• Data transformation pipeline - Built-in filters, column mapping, and reshaping operations
• Abstract base classes - BaseParser and BaseExporter for implementing translators
• Flexible data store - Automatic format detection and intelligent caching
• Entry point discovery - External packages can register plugins via setuptools/pyproject.toml entry points

Installation

pip install r2x-core

Or with uv:

uv add r2x-core

Python version support: 3.11, 3.12, 3.13

Quick Start

Using the DataStore

The DataStore provides a high-level interface for managing and loading data files:

from r2x_core import DataStore, DataFile

# Create a DataStore pointing to your data directory
store = DataStore(path="/path/to/data")

# Add files to the store
data_file = DataFile(name="generators", fpath="gen.csv")
store.add_data(data_file)

# Or add multiple files at once
files = [
    DataFile(name="generators", fpath="gen.csv"),
    DataFile(name="loads", fpath="load.csv"),
    DataFile(name="buses", fpath="buses.h5")
]
store.add_data(*files)

# Read data from the store
gen_data = store.read_data("generators")

# List all available data files
available_files = store.list_data()

# Remove a data file
store.remove_data("generators")

Building a Model Translator

Create parsers and exporters for your power system model:

from r2x_core import BaseParser, BaseExporter, PluginConfig, DataStore

# Define type-safe configuration
class MyModelConfig(PluginConfig):
    folder: str
    year: int

# Implement your parser
class MyModelParser(BaseParser):
    def build_system_components(self):
        # Load data and build system components
        gen_data = self.data_store.read_data("generators")
        # ... create system components
        return Ok(None)

    def build_time_series(self):
        # Attach time series data
        return Ok(None)

# Create a data store and parser
config = MyModelConfig(folder="/path/to/data", year=2030)
store = DataStore(path=config.folder)
parser = MyModelParser(config, data_store=store)
system = parser.build_system()

Plugin Registration and Discovery

Create a manifest that describes each plugin explicitly:

from r2x_core import PluginManifest, PluginSpec

manifest = PluginManifest(package="my-model")

manifest.add(
    PluginSpec.parser(
        name="my-model.parser",
        entry="my_package.parser:MyModelParser",
        config="my_package.config:MyModelConfig",
    )
)

manifest.add(
    PluginSpec.exporter(
        name="my-model.exporter",
        entry="my_package.exporter:MyModelExporter",
        config="my_package.config:MyModelConfig",
        config_optional=True,
    )
)

Make plugins discoverable via pyproject.toml:

[project.entry-points.r2x_plugins]
my_model = "my_package.plugins:manifest"

Documentation

Comprehensive documentation is available at nrel.github.io/r2x-core:

• Getting Started Tutorial - Step-by-step guide to building your first translator
• Installation Guide - Detailed installation instructions and options
• How-To Guides - Task-oriented guides for common workflows:
  • Configuration Management
  • Data Reading
  • DataStore Management
  • File Operations
  • Plugin Registration
  • System Operations
  • Unit Operations
• Explanations - Deep dives into key concepts:
  • Plugin System Architecture
  • Unit System
  • HDF5 Readers
• API Reference - Complete API documentation

Roadmap

Curious about what we're working on? Check out the roadmap:

• Active issues - Issues that we are actively working on
• Prioritized backlog - Issues we'll be working on next
• Nice-to-have - Features or fixes anyone can start working on (please let us know before you do)
• Ideas - Future work or ideas for R2X Core

Contributing

We welcome contributions! Please see our Contributing Guide for guidelines on how to contribute to R2X Core.

License

R2X Core is released under the BSD 3-Clause License. See LICENSE.txt for details.