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ENVI-met offers a free, limited version called ENVI-met LITE

for non-commercial, academic use. This version allows you to explore the software's core capabilities for urban microclimate modeling with certain domain size restrictions. How to Download ENVI-met Free Visit the Official Download Page : Go to the ENVI-met Technical Model Download page to access the latest release. Select the LITE Version

: During installation, or when prompted for a license, you can choose the : ENVI-met LITE is typically limited to a domain size of 50 x 50 x 30 grids Request a Trial : For professionals wanting to test full features, you can request a free trial license from the official site. System Requirements : Ensure your PC runs a 64-bit Windows 10 or newer system; 32-bit systems are no longer supported. Key Features of the Free/LITE Version Urban Microclimate Simulation

: Analyze the interactions between buildings, vegetation, and the atmosphere at a high resolution (up to 1m). Thermal Comfort Indices : Calculate metrics like (Physiological Equivalent Temperature) and (Universal Thermal Climate Index) using the built-in BIO-met tool Vegetation Impacts

: Model how green roofs, facades, and trees reduce surface temperatures and urban heat stress. Plugin Integration : The software integrates with design tools like Rhino (Grasshopper) ENVI-met high-resolution 3D modeling for Climate Adaption

Step 3: Select the Entry License

Look for the “Entry License (Free)” option. You will need to register for a free user account.

Where to find it:

Look on academic repositories like Zenodo or GitHub under "ENVI-met 4.4.5 archive." Some university climate labs host the installer. Note that ENVI-met GmbH no longer officially supports this version, but it runs fine on Windows 10/11.

5. QGIS Plugins (e.g., UMEP – Urban Multi-scale Environmental Predictor)

  • Fully free and open-source. Integrates with QGIS.
  • Great for solar radiation, SVF, and some climate simulations.
  • Less comprehensive than ENVI-met but actively developed.

🛑 Avoid "cracked" ENVI-met downloads. They often contain ransomware, keyloggers, or incomplete DLLs that crash your system. Moreover, using cracked software for academic publication can lead to retraction or legal action.

3. Features of the Free Version

The official free version (historically called “Free Edition” or “Lite”) typically includes:

| Feature | Free Version | Commercial Version | |--------|--------------|--------------------| | Model domain size | ≤ 50x50x20 grids | Unlimited (≥ 250x250) | | Simulation duration | ≤ 24 hours | Unlimited | | Nesting grids | Not available | Available | | Full output variables | Limited (e.g., no turbulence, no full radiation outputs) | All variables | | 3D plants and advanced materials | Basic library | Full database + custom | | Pollutant dispersion (CO₂, PM, NOx) | No | Yes | | Python interface (ENVI-met Py) | Limited | Full access | | Technical support | Community forum only | Priority email support |

8. Recommendation for Users

  • For a quick test or small project → Use the official free version (up to 50x50 grid, 24h simulation).
  • For student thesis → Apply for a free Student License (valid for 1 year, larger model domains).
  • For funded research → Request a free trial of the full version (usually 14–30 days) or purchase an educational license (~€500–1500 one-time depending on region).
  • For commercial use → Purchase full license or lease (monthly subscriptions now available as of ENVI-met 5.5+).

Always download directly from envi-met.com to ensure safety and compliance.

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