eQUEST – is an hourly energy modelling tool using the DOE-2.2 simulation engine. This is the primary software tool used by GreenSim.
EE4 – obsolete software from Natural Resources Canada which generated the MNECB-1997 reference building.
Simergy – graphical interface for EnergyPlus version 8.1
RETScreen – a spreadsheet based tool for evaluating renewable energy technologies including wind, solar PV and solar thermal, run of river hydroelectric along with combined heat and power and energy conservation improvements.
These are the tools that we use most often at GreenSim but it is hardly an exhaustive list of energy simulation tools. For a thorough directory of energy simulation tools have a look at IBPSA-USA’s BEST List.