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EnergyPlus (DOE)

Open Source

Comprehensive building energy simulation engine from the U.S. Department of Energy.

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4.7 Editor Rating
Vetted Score
4.7 / 5.0

Earns a high score for its rigorous physics engine, broad industry adoption, and fully open-source accessibility.

Key Features
Detailed Building Energy Modeling

Simulates heating, cooling, lighting, ventilation, and renewable energy systems with high fidelity.

Extensive Material and HVAC Libraries

Includes thousands of construction materials and HVAC components for accurate performance predictions.

Open Architecture and Scripting

Supports custom extensions via Python scripts and integration with other DOE tools like OpenStudio.

Frequently Asked Questions

Yes, EnergyPlus is released under an open-source license and can be used at no cost for any purpose.

EnergyPlus runs natively on Windows, macOS, and Linux platforms.

Yes, it offers APIs and supports scripting (e.g., Python) for integration with tools like OpenStudio, DesignBuilder, and custom workflows.
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Specifications
Pricing Model Free and open-source; no paid or enterprise tiers.
Supported Platforms
WindowsmacOSLinux
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