A few years ago i started using Ecotect v4 for energy analysis on projects. I gotta say that is a very easy to use tool, with a very short learning curve that lets you conduct several analysis on the design phase of your projects, such as shading, energy consumption, airflow, acoustics, lighting, etc. Also, during the process of analysis, it shows you on a very didactic way new terms and how they affect the project.
Easy, fast and accurate. What else could you ask for?
