algorithmic modeling for Rhino


Ladybug Analysis 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: 1403
Latest Activity: 10 minutes 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

New Solar Envelope Component now available 16 Replies

Hello Ladybuggers!We have just released a new solar Envelope component for Laybug called SolarEnvelopeAdvanced! The component offers two envelopes -Solar rights - A 3D envelope which defines the maximum height of built volume which would not violate…Continue

Tags: access, envelope, solar

Started by Boris Plotnikov. Last reply by Bi Xiaojian 10 minutes ago.

PV:surface 1 Reply

Hi,I recently found out that Ladybug had implemented the PV:surface / Sandia model in Ladybug, which is great.Now some questions:-Can you add surfaces that will cast shading on the PV surfaces? I can't find that.-Also, the outputs seems strange.…Continue

Started by jkanters. Last reply by djordje 37 minutes ago.

Ladybug_Sunlight Hours Analysis geometry self-shading? 20 Replies

Hello,using the component Ladybug_Sunlight Hours Analysis there are two inputs:- geometry (Geometry for which sunlight hours analysis will be conducted)- context (Context geometry that could block sunlight to the test geometry)During some recent…Continue

Started by Francesco De Luca. Last reply by Francesco De Luca 51 minutes ago.

how to filter a mesh based on result 10 Replies

The example file contains the solar radiation simulation results of a group of points on building facade and the visualization of the facade mesh based on these results.…Continue

Started by Grasshope. Last reply by Grasshope 8 hours ago.

Simulation Period Setting 2 Replies

Hi Mostapha, Chris and group members,The Ladybug_AnalysisPeriod component could set a continuous period of time not the discontinuous or separated. So how to set a same period of each day (ex. the 5 a.m to 7 p.m of everyday from June 5th to July…Continue

Started by Bi Xiaojian. Last reply by Bi Xiaojian 9 hours ago.

Problems about the Adaptive Comfort Accuracy 3 Replies

Hi Mostapha, Chris and group members,I made a little experiment about a small house by adaptive comfort method to check the influence to interior comfort by different passive operations, such as natural ventilation. The result seemed odd that showed…Continue

Started by Bi Xiaojian. Last reply by Bi Xiaojian 9 hours ago.


@__Mostapha__ so that you don't accidentally trigger a simulation solution immediately on file open. I wrote it. Want it for HB/LB?

so that you don't accidentally trigger a simulation solution immediately on file open. I wrote it. Want it for HB/LB?


Members (1403)



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