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: 1595
Latest Activity: 2 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

Light Exposure - Lux Hours 6 Replies

I could not find any discussions on this topic. Harmful light exposure to museum objects is often measured in lux hours (visible light is used also as a proxy for UV). I do not think this is something that can be generated out of the box with…Continue

Started by Ernst Bay. Last reply by Sarith Subramaniam 2 hours ago.

Butterfly time-based simulation QUESTIONS

Dear everyone,First of all, thanks to Mostapha for BF development, an incredible tool!The 1st ques: pls check the 1st attached .png image. Basically, I am bit of confused by the 'inletBoundary' and 'outletBoundary' components in which the…Continue

Tags: Butterfly

Started by Lei Yang 17 hours ago.

Surface temperature of internal blind

Hi Mostapha, Chris and all,While investigating the impact of internal blind on occupants' thermal comfort, I became curious about how we calculate the surface temperature of internal blind. Is it something that I can check in Honeybee work flow?I…Continue

Started by WON HEE KO yesterday.

THERM - Control over BC Radiation Model

Hi,I am super new to the Honeybee tools and started using it specifically for the THERM integration. I so excited by its potential and have run a few tests.The process works amazingly but there were discrepancies between the THEM output in Rhino and…Continue

Started by Jonathan Story yesterday.

Building design with Solar Envelope 5 Replies

Hi everybody!I have to design an entire neighborhood, that must addresses the principles of outdoor and indoor comfort and also of sustainability.So I need to maximize the sun exposure on the ground, reducing as much as possible the shadow casting,…Continue

Tags: Design, Building, Envelope, Solar, Ladybug

Started by Leonardo Roli. Last reply by Jacopo Baldini yesterday.

Honeybee error- 3 Replies

Hican anyone  let me know how to resolve this issue.while placing the honey bee  component it gives the following error"1. Honeybee cannot find OpenStudio on your system.You wont be able to use the Export to OpenStudio component.Download the latest…Continue

Started by dk. Last reply by Antoine Simionesco on Tuesday.


"PassiveBee", exports Rhino/GH model to WUFI Passive! The first prototype, no more SketchUp. PassiveBee will be a fr… 

"PassiveBee", exports Rhino/GH model to WUFI Passive! The first prototype, no more SketchUp. PassiveBee will be a fr… 


Members (1595)



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