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.

Release notes

Download Ladybug and Honeybee

Example Files for Ladybug

Example Files for Honeybee

Ladybug on GitHubHoneybee on GitHub

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

Members: 527
Latest Activity: 6 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.

For more information, see this presentation here:

or watch these videos:

Part 1: 

Part 2:

And this video here:

Discussion Forum

Insulated night shutters 22 Replies

Hi Everyone!Short question aiming to clarify before I dive in honeybee world. Is it possible to substitute materials according to a specified schedule with honeybee? This feature would be helpful for…Continue

Started by Artem Polomanyy. Last reply by Abraham Yezioro 6 hours ago.

cumulativeSkyMtx error 19 Replies

Hi,I am getting strange results from the v.58 cumulativeSkyMtx component when I run the Reinhart skypatch model. See attached files and images. The Reinhart model reports an error saying it cannot…Continue

Tags: sky, reinhart, cumulativeSkyMtx

Started by Leland Curtis. Last reply by Leland Curtis yesterday.

Setting a custom geometric location for solar radiation study with Ladybug

Hi all!First of all, thank you for this excellent tool!I am starting a solar radiation analysis for a building located in Sweden, at a location that is not available on the EnergyPlus site. Weather…Continue

Started by Örn Erlendsson yesterday.

Analysis for Light diffusing panels 4 Replies

Mustafathanks for your reply and useful commentsI managed to enhance the panels in the analysis.Another question  that arose is how could i add artificial light sources within the space to measure…Continue

Started by Evangelos Pantazis. Last reply by Evangelos Pantazis on Friday.

Ladybug Tweets

Comment Wall


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

Comment by Mostapha Sadeghipour Roudsari on Thursday

Hi Marco, Thanks. It can be for different reasons. If you get the results for other outputs then my best guess is that your zones are not conditioned. If this is not the case feel free to open a discussion and upload the file.

Comment by Marco P on Thursday

Hi Mostapha,

Hi Chris,

I'd like to thank you for these awesome plug-in.

I've one question related to HB EP results. In fact, apparently everything seem to work but I'm not able to read any EP output (total energy, cooling, heating...) from the resultFileAddress of the ReadEPResults component. 

Any help will be appreciated!

Thank you in advance,


Comment by Gülce Kırdar on Wednesday

There is a jpeg file for the explanation on panel when I connect this to report honeybee run energy simulation and I send also grasshopper and rhino files to see the error better.I think something goes wrong with energy simulation files but I can't find out.Even I use grasshopper files from tutorials when I connect my brep it doesn't work again:(Please write me as soon as possible

Comment by Chris Mackey on December 5, 2014 at 10:42pm

masomme, I echo Peter's remark that you should post the issues that you have as discussions.  To briefly answer your first question, you can model interior and exterior blinds with Honeybee.  You can even set schedules to them for dynamic shading.  I put together an example file for how to do this here:

and I will add a tutorial video to this series soon on how to set up these dynamic blinds:

Comment by Peter Zaťko on December 5, 2014 at 8:05am

Hi again, I think this comment should help you,

and you should also mabye go throught the discussion forum , there was issues with that promblem, and maybe you shloud start a new discussion with your problem.



Comment by masoome on December 5, 2014 at 7:54am

Thanks Peter

I didi it but the problem is sth else.

I circle the main problem. I didn't find an user object by this name.



Comment by Peter Zaťko on December 5, 2014 at 6:31am

Hi masoome

you should connect HBsurfaces into HB zones componet,if it doesn´t work it can even a update problem too (is better when you gie a different names to surfaces )

Comment by masoome on December 5, 2014 at 3:56am


I wanted to define a room as a zone in Hb but has an error!!

Can erveryone help me?

The error is in the attached Photo

Thanks a lot

Comment by masoome on December 5, 2014 at 3:54am

I wanna simulate a midpane blind in honeybee, but Honeybee just know internal and external blind.
i'll appreciate you if helping me.
thanks inadvance

Comment by Mostapha Sadeghipour Roudsari on December 4, 2014 at 11:25pm

Hi pyrit,

Are you using Ladybug, or Honeybee? You can post process the results and figure it out if you are running an annual analysis with Honeybee. In Ladybug you can use realTimeRadiation analysis and generate hourly results. If you have an example file please open a discussion and upload your file so someone can help you with your question.

Cheers, -Mostapha


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