Open Source Distribution

GridLAB-D will be released as an open-source system to a limited group of charter developers in December 2007.

This release will be the basis for these selected partners to develop modules they propose in response to a Program Opportunity Notice issue by PNNL on behalf of the US DOE.

A more public release is planned for October 2008, making GridLAB-D widely available to the public under open-source licensing. Industry partners and collaborators will be invited to examine and test the system, and submit new modules to the open-source library. When modules are vetted and approved by the partners, they will be added to the standard release. Unvetted modules will be available as add-ons from the open-source repository, but will not be installed as a part of the standard download available from the repository.

Developers are permitted to create proprietary modules, however they will be required to distribute required GridLAB-D components free of charge, and provide prominent acknowledgement of the authors and funding used to create those modules. Any changes made to the open-source modules comprising the GridLAB-D system must be resubmitted to the open-source library for distribution.

Please see Reporting problems for more information


GridLAB-DTM Version 1.0
An open-source project initiated by the US Department of Energy