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: 1510
Latest Activity: 4 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

March for Science on April 22 3 Replies

As we are getting closer to March for Science on April 22, we wanted to share our support and encourage everyone in our wonderfully scientific community to participate in this global event!Ladybug Tools is built on top of EnergyPlus, Radiance,…Continue

Tags: siencemarch, March for Science

Started by Mostapha Sadeghipour Roudsari. Last reply by konrad k sobon 4 hours ago.

Use Honeybee Gen Custom Sky component as a direct radiation source 4 Replies

Hi all,I would like to conduct a radiation study using Honeybee for a given solar position and given direct / diffuse radiation values.I am currently using the GenCustomSky Honeybee component (see file below).I am having trouble figuring out how to…Continue

Tags: Sky, Custom, Radiation, Direct, Honeybee

Started by Mike Johnson. Last reply by Mike Johnson 4 hours ago.

User defined matrix for HoneyBee_Visualize_Microclimate_Map 7 Replies

Hi everyone,I am trying to add a new Predicted Mean Vote (from PIERCE foundation, FANGER and PICKUP and DE DEAR), thanks to Python_Script_Editor. But when I tried to visualize the matrix thanks to HoneyBee_Visualize_Microclimate_Map this error…Continue

Tags: Python, Map, Comfort

Started by Mehdi HAMDANI. Last reply by Mehdi HAMDANI 6 hours ago.

ETFE simulation_ EP and Radiance 18 Replies

Hi,I have been trying to model ETFE cushions for EP and Radiance. For Radiance I am introducing manually results as produced by LBNL but for EP I have my doubts if a representation of a single layer using "windowMaterial" component is enough as ETFE…Continue

Started by Anastasios Kokkos. Last reply by Mostapha Sadeghipour Roudsari 11 hours ago.

The relation between radiation results and the geometry 6 Replies

Hey guys,I use the Ladybug Radiation Analysis component and I get the radiation results(not the total  result), it is a series of numbers, also the radiation is plotted on the geometry, but how can I find out which result corresponds to which…Continue

Started by Zhonghao Dai. Last reply by Zhonghao Dai 12 hours ago.

change Perez coefficients for solar radiation modelling under Ladybug or honeybee 2 Replies

Hi all, i have tricky issue to ask you about customizing Perez coefficient under ladybug/honeybee/Radiance. I need to improve the accuracy for solar radiation modelling for my projects. One of the solution is to adjust six sets of Perez coefficient…Continue

Tags: radiation, solar, radiance, honeybee, ladybug

Started by Le. Last reply by Le 23 hours ago.


Happy Spring! Stay tuned as we will have some very good news for you today.

Happy Spring! Stay tuned as we will have some very good news for you today.


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