Dr Peter Lyons, PhD, is Principal of Fenestralia, and works closely with Team Catalyst on a number of projects. He is a recognised expert in residential building energy efficiency, with more than 25 years of experience and expertise in advanced window systems, energy modelling and green building rating systems for residential buildings. These include BCA (now NCC) Section-J and BASIX, and the use of Accurate software and it’s variants. PC and Peter developed the original Window Energy Rating Scheme (WERS) under contract to the Commonwealth Department of Primary Industries and Energy in 1995. The system is currently managed by the (Australian Fenestration Rating Council) AFRC and used to provide certification for residential window projects. Peter is a foundation member of the AFRC Technical Advisory Committee. AFRC-compliant ratings for windows, glazed doors and skylights are a mandatory requirement of the NCC/BCA. He has recently delivered a report to DCCEE on new skylight modelling algorithms for AccuRate and other NatHERS software tools. He was an active member of several working groups for the Australian Building Codes Board. Peter is a co-founder of DesignBuilder Software Australia and he supports and trains in the use of that software which runs the EnergyPlus simulation engine. He is proficient in the use of DesignBuilder interface for EnergyPlus and in the use of EnergyPlus itself.