Big Ladder Software is a Denver-based company dedicated to providing services and software for energy modelers and energy modeling firms. The company name reflects our mission to "help our clients reach new heights". Founded in 2009, we are a team of engineers and computer programmers who are passionate about developing innovative open-source software tools for building energy modeling. We exclusively use the EnergyPlus simulation engine to perform whole-building energy analyses. We also offer training workshops, commercial support, and custom software development services for EnergyPlus, OpenStudio, DesignBuilder, and California Simulation Engine.