algorithmic modeling for Rhino


Ladybug + Honeybee

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: 1252
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

Read EP Result | Normalize

Hi, I wast just wondering why the normalize node was removed for the Read EP Result…Continue

Started by huntan 3 hours ago.

Changing the resolution (Image quality) of imagebased simulation - Ladybug 2 Replies

Hello!Im having trouble understanding how to manage the resolution of a imagebased rendering in ladybug. I have tried to change the width and height in the imagebased component but I seem to get the same resolution with a larger viewport (it is not…Continue

Started by Afshin Ghafoori. Last reply by Abraham Yezioro 6 hours ago.

Cannot find function file 5 Replies

Previously everything was working fine however now I am getting this weird error.Does anyone have any ideas?Much Appreciated!…Continue

Started by Anton Szilasi. Last reply by Saeran Vasanthakumar 12 hours ago.

Each Iteration adds to RAM Usage - Honeybee 9 Replies

Hi,First of all, thanks for the great work on HB! It is proving very fun and useful.I am trying to do some optimization study on the cooling and heating load of a generic building by using Honeybee and Galapagos. There are two identical floors with…Continue

Started by Timothy L. Last reply by Anton Szilasi 19 hours ago.

Radiation Analysis 5 Replies

Hello,I am trying to run a solar radiation analysis. I downloaded the script from github and also rewrote the script several times. The result does not offer a range it just turns blue. I have tried changing the test geometry as well as the weather…Continue

Started by Melissa Jimenez. Last reply by Melissa Jimenez 19 hours ago.

Outdoor Comfort and Tree Transparency 6 Replies

Greetings, Has anyone had any success in modeling tree transparency with regards to outdoor thermal comfort? I am attempting to utilize the UTCI calculator in Ladybug with the use of the Solar Adjusted MRT component. There current does not seem to…Continue

Tags: MRT, Ladybug, UTCI

Started by Kit Elsworth. Last reply by Abraham Yezioro 20 hours ago.


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