Welcome to the Building Technologies Office's Building Energy Modeling blog.

July 26, 2021

It's Alive! After Five Years in the Lab, Spawn of EnergyPlus is Finally Here

For the past five years, DOE and the national labs have been developing a next-generation simulation engine that bridges the worlds of BEM and controls. In May of this year, Spawn, was released as part of the Modelica Buildings Library.

July 17, 2021

EnergyPlus Turns 20!

On April 12, 2021 EnergyPlus, DOE's flagship BEM engine celebrated its twentieth birthday. Several of those who were there at the beginning look back at those early days and remark on the changes they've seen in the last two decades.

March 22, 2021

New Toolkit Helps Save Energy in Two Data Centers—and Potentially Many More

A team led by the University of Colorado-Boulder has developed a combined cooling and airflow simulation and optimization toolkit that has already enabled significant energy savings in two data centers.

February 23, 2021

Architecture Firm Perkins&Will “SPEEDs” Up Early-Stage BEM

The Energy lab at architecture firm Perkins&Will used OpenStudio to develop a cloud-based energy analysis tool that supports its 2,000 architects.