Autodesk, Inc. (ADSK) announced the expansion of its portfolio of software solutions to support sustainable A/E/C markets with the acquisition of technology assets of two energy analysis software companies.

Autodesk announced signing a definitive agreement to acquire substantially all the assets of Green Building Studio, a Web-service company that helps architects and engineers to easily perform whole building energy analysis early in the design process. Autodesk plans to continue support for the Green Building Studio web service and gbXML as an open standard, and to strengthen the integration with its building information modeling or BIM software.

Autodesk also announced that it acquired substantially all the assets of Carmel Software Corporation, a developer of HVAC mechanical engineering software that helps engineers and architects to analyze their mechanical designs and ensure sustainability goals are achieved. Autodesk plans to continue support for the Carmel products and to leverage the capabilities of Carmel Software's products with its BIM software.

Jay Bhatt, senior vice president of Autodesk AEC Solutions, stated that adding the two companies to Autodesk's portfolio would help its customers easily leverage the coordinated, reliable data created in the Revit platform for BIM to help predict performance and design buildings with reduced environmental impact. The terms of the two acquisitions were not disclosed.