algorithmic modeling for Rhino


Ladybug + Honeybee

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

Installation Instructions

Download Ladybug and Honeybee

Remove Old Version

Example Files for Ladybug

Example Files for Honeybee

Ladybug on GitHubHoneybee on GitHub

Use this Reference for your Publications.

Ladybug started by Mostapha Sadeghipour Roudsari is licensed under a Creative Commons Attribution-ShareAlike 3.0 Unported License. Based on a work at

Members: 616
Latest Activity: 49 minutes 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 three separate playlist for Ladybug, Comfort tools, and Honeybee.

For more information, see this presentation here:

or watch these videos:

Part 1: 

Part 2:

And this video here:

Discussion Forum

Orientation Study 17 Replies

I recently received multiple questions about the orientation study and I hope this discussion answers the majority of them.WHAT + WHEN?Orientation study is a feature integrated to the analysis…Continue

Tags: ladybug, analysis, radiation, study, orientation

Started by Mostapha Sadeghipour Roudsari. Last reply by Mostapha Sadeghipour Roudsari 49 minutes ago.

Instalar Ladybug + HoneyBee 1 Reply

Que onda con los vinculosContinue

Started by Javier M Gaxiola. Last reply by Mostapha Sadeghipour Roudsari 3 hours ago.

Simulation output in 15 minutes time step 5 Replies

Hi thank you for the Ladybug/Honeybee tool it has been a great help for my research! I ran the simulation as mentioned in the videos, I noticed that even if I put hourly in time step, Energyplus…Continue

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

Problem with the annual DGP Daysim simulation 4 Replies

Hi all, I am having some trouble running an annual glare simulation with the honeybee daysim components. Maybe someone can help me figure out what the problem is. When I launch the simulation it…Continue

Tags: error, sky, Honeybee, Daysim, DGP

Started by Alejandro Pacheco Diéguez. Last reply by Mostapha Sadeghipour Roudsari 10 hours ago.

Ladybug Tweets

Comment Wall


You need to be a member of Ladybug + Honeybee to add comments!

Comment by Javier M Gaxiola on Tuesday

Como instalar LadyBug y HoneyBee en Español

Seguro a alguien le sirve

Comment by mohamadmahdi on March 14, 2015 at 1:03am

Thanks a lot

The problem was just on the GHPython file, it was blocked :D

Comment by Mostapha Sadeghipour Roudsari on March 12, 2015 at 8:19pm

Hi MohammadMahdi, This error happens when you don't have GHPython installed correctly. Are you sure that GHPython is installed correctly on your system? This discussion may also help!

Hi Paul, There has been discussions about Ladybug for Dynamo. It will start at some point. I can't give you an exact day right now but we have been thinking about it. We need to make sure that if there will be a Ladybug for Dynamo it will be as good as the one for Grasshopper. It's also important to make sure that sure that we will be ready to support two developments (if not 3 considering the web-based version which will be out at some point next year) at the same time!

Comment by Paul Wintour on March 12, 2015 at 6:28pm

Hi Mostapha

I'm wondering if you plan on taking Ladybug into Dynamo. I think it would be amazing as what exists already seems pretty limited. Keep up the good work!

Comment by mohamadmahdi on March 12, 2015 at 1:22pm

i`ve done every step in the "Instalation Instruction.text" but i face into this error window 

i would be so thankful if u help me

Comment by Chenyang on March 10, 2015 at 1:56pm

Thank you so much!

Comment by Abraham Yezioro on March 6, 2015 at 10:54pm

You don't need to define it. There is an "Air Wall" construction in the HB_Library. You just need to connect a panel with AIR WALL
 in it to the EPConstruction input where appropriate.


Comment by Chenyang on March 6, 2015 at 1:59pm

Hi Everyone,

Have trouble in making air wall in Honeybee. What is the best way to create air wall? 



Comment by Mostapha Sadeghipour Roudsari on March 1, 2015 at 3:02pm

Just a quick note that the new version of epwmap is ready. I hope this project makes the process of finding .epw files easier. Read more here: and check the project at this address:

Comment by Chris Mackey on February 28, 2015 at 7:23pm


With regards to the solar envelope, I am going to post a response on this related discussion:



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