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: 1563
Latest Activity: 1 hour 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

Ladybug Tools Webinar Workshops: March-May, 2017 4 Replies

Magnificent Community of Ladybug!This is a reminder that we will be kicking off a 2-month-long series of webinars starting this upcoming Thursday, March 9th.  Each webinar will last for 2 hours and will cover one of the latest and greatest topics…Continue

Tags: Butterfly, Dragonfly, Honeybee, Ladybug, Workshop

Started by Chris Mackey. Last reply by Chris Mackey 1 hour ago.

Butterfly failed to run

Hello everyone,I reinstalled my OpenFoam and VM recently and from then the following errors started popping up with every CFD I run. The errors are:Error11. Solution exception:Failed to find points file at…Continue

Started by Neeharika Siram 1 hour ago.

Annual Probable Sunlight Hours (APSH) 6 Replies

Hello Mostapha,As I continue my attempt do the 3 types of analysis required by the UK's Rights of Light using LB and HB, (and replace Ecotect), I have some more questions.So far it seems that the VSC is already there, I now try to understand the…Continue

Tags: Hours, Sunlight, Probable, Annual, APSH

Started by Dimitrios Papadopoulos. Last reply by Mohammad Hamza 2 hours ago.

Butterfly run error 5 Replies

Hello guys,I just began to use butterfly for a urban design analysis.However when i ran the example, which Mostapha developed and put inside download zip file, there is a error pop up says"1. Solution exception:Failed to load values:Failed to find…Continue

Tags: Butterfly

Started by Lei Yang. Last reply by Mostapha Sadeghipour Roudsari 2 hours ago.

intersectMass component is unable to process normal breps and the warning is inconsistent 6 Replies

The attached workflow generate 10 random zones in a fix 3D grid.Sometimes, the zones generated sometimes can be processed by the intersectMass correctly:…Continue

Started by Grasshope. Last reply by Abraham Yezioro 4 hours ago.

Honeybee Night Flush 6 Replies

A question about setting up the proper controls for conducting a night flush sequence during the summer. I recognize that the Honeybee_Set EP Airflow component allows me to set the maxOutdoorTemp and maxIndoorTemp for natural ventilation but it…Continue

Started by Kit Elsworth. Last reply by Theodoros Galanos 14 hours ago.


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