algorithmic modeling for Rhino


Ladybug Tools

Ladybug and Honeybee are two open source environmental plugins for Grasshopper to help designers and engineers create an environmentally-conscious building design.

Installation Instructions

Download Ladybug and Honeybee

Remove Old Version

Ladybug PrimerHoneybee Primer

Example Files for Ladybug

Example Files for Honeybee

Ladybug on GitHub

Honeybee on GitHub

Use this Reference for your Publications.

Licensed under @license GPL-3.0+

Read more here

Members: 1505
Latest Activity: 3 hours ago


What is Ladybug?

Ladybug is an open source environmental plugin for Grasshopper3D that helps architects and engineers create an environmentally-conscious architectural design.  Ladybug imports standard EnergyPlus Weather files (.EPW) into Grasshopper and provides a variety of 3D interactive graphics to support the decision-making process during the initial stages of design.

What is Honeybee?

Honeybee connects Grasshopper3D to EnergyPlus, Radiance, Daysim and OpenStudio for building energy and daylighting simulation.The Honeybee project intends to make many of the features of these simulation tools available in a parametric way.

You can get started by watching this video:

Here are four separate playlist:

Want to see a full presentation?

Check out this presentation or watch it: Part1Part 2

And this video here:

Discussion Forum

Butterfly beta release for Grasshopper and Dynamo 13 Replies

We are very excited to finally release the Butterfly plugin for both grasshopper and dynamo on this lovely first day…Continue

Tags: Butterfly, Ladybug Tools, OpenFOAM, CFD

Started by Mostapha Sadeghipour Roudsari. Last reply by Mostapha Sadeghipour Roudsari 3 hours ago.

Radiation analysis without epw weather file 38 Replies

I would like to conduct a radiation analysis using LadyBug. To do that I must input a sky matrix. To generate a sky matrix I need an .Epw weather file. I do not have a .epw file for my location but I do have the longitude/latitude location and I…Continue

Tags: epw, matrix, sky, analysis, Radiation

Started by Mike Johnson. Last reply by Chris Mackey 4 hours ago.

Set the shading schedule with Daysim/Honeybee 13 Replies


Tags: simulation, annual, daylight, 50w/m2, shading

Started by Alejandro Pacheco Diéguez. Last reply by LUIS ARTURO REYES VALENCIA 10 hours ago.

Mitigating UHI effects with Vegetation 2 Replies

Hi Guys,This is my first post here and I am extremely new to Rhino-Grasshopper-LB+HB operations so please excuse me if I come across uninformed. First of, thanks for creating this tool and making it freely available!I am proposing a project for my…Continue

Tags: Mitigation, Space, Green, UHI

Started by Declan Fay. Last reply by Declan Fay 20 hours ago.

Outdoor Microclimate Map issue 10 Replies

Hi everyone!Thank you again for the fantastic tool you developed! It's really giving me a considerable help in developing my thesis work.Last time I wrote here asking help about the evaluation of UTCI and PET through the "Outdoor comfort…Continue

Started by Francesco Scarpati. Last reply by Saket Sarupria yesterday.

Honeybee Dynamic Shading with BSDF Material 3 Replies

Hi!While working on the dynamic shading simulation, after a few tests I found the annual simulation with dynamic shading cannot generate .ill files.I ran 2 tests, one with shade of Trans material, which works fine, another with shade of BSDF…Continue

Tags: Material, Honeybee, Shading, Dynamic, BSDF

Started by XF. Last reply by Willy Tsui yesterday.


Happy Spring! Stay tuned as we will have some very good news for you today.

Happy Spring! Stay tuned as we will have some very good news for you today.


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