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: 1630
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

Running an existing radiance model with points files 3 Replies

Hi everyone, I have existing radiance files, radiance material files, and points files and would like to run them using radiance through honeybee. However if I use the following component shown in the image, I need to have honeybee objects. How…Continue

Started by Sandi Sirikhanchai. Last reply by Sarith Subramaniam 1 hour ago.

HB context not effective in EP

HI,I am skeptical about the results of the total solar transmittance through the glazing, the results between HB zones with/without context is very small which makes me question, especially that the shading elements I am using  LB shading design…Continue


Started by Hassan Baghdady 8 hours ago.

A Issue with Zones from Surfaces

I think I'm not understanding something about creating zones from surfaces. Aside from labeling my surfaces with duplicate names, I have errors at intersections. There are roughly 15 of these type of errors:When I made my surfaces, I created a…Continue

Started by daviduburke 12 hours ago.

Simplify the setting process of u-value 2 Replies

Hi Mostapha, Chris and group members,Is it possible to simplify the setting process of construction u-value with a series of u-value numbers rather than a range of detailed settings  in order to accelerate the process of conceptual design…Continue

Started by Bi Xiaojian. Last reply by Bi Xiaojian 13 hours ago.

Strange ReColorMesh results when baking 5 Replies

Hi! Does anyone have an idea why I get this result when baking with the ReColorMesh component? The meshes look fine when previewing in Grasshopper, but I only get these lines when baking them (using the bakeIt option) – both the meshes and the…Continue

Started by Daniel. Last reply by Daniel 13 hours ago.

Honeybee Generation without Lighting Output

Hi Anton Szilasi, Mostapha, Chris and group members,Is it not a simple linear formula between solar energy production and energy reduction?I calculated a simple box with westGlz 0.8 and eastGlz 0.8, the result showed that the netpurchasedelect was…Continue

Tags: Generation, Honeybee

Started by Bi Xiaojian 13 hours ago.



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