Modelica Buildings Library 7.0.0 and BuildingsPy 2.1.0 released

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LBNL released the Modelica Buildings Library 7.0.0, which is based on the
Modelica IBPSA Library (, and it released
BuildingsPy 2.1.0 for scripting Modelica simulations and development.

The Modelica Buildings Library Version 7.0.0 is a major release that
contains various new packages, new models and improvements to existing

The following major changes have been done:


New packages have been added to model building controls and to support
the creation of emulators that compare the performance of building control
sequences in the Building Optimization Performance Tests framework

Various new control blocks have been added to the Control Description
Language CDL.

Various new equipment models have been added, such as models of
absorption chillers, CHP equipment and heat pumps.

The reduced order building models now also allow modeling air moisture
and air contaminant balance.

A tutorial has been added to explain how to implement control sequences
using the Control Description Language that is being developed in the
OpenBuildingControl project .

The icons of many components have been updated so that they visualize
temperatures, flow rates or control signals while the simulation is running.

Results of the ANSI/ASHRAE Standard 14 validation (BESTEST) are now
integrated in the users' guide


The library has been tested with Dymola 2020x and 2021, JModelica (revision
14023), and OPTIMICA (revision OCT-stable-r12473_JM-r14295).

For a detailed list of changes, see

For more information and download, visit

The development sites are and

Michael Wetter's picture
Joined: 2011-10-02
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