# Simplified Modeling Tools

I am carrying out a research project on simplified building energy modelling tools, and I am looking for simplified tools that provide reasonably accurate estimates of annual energy consumption (isn't everyone ;-). Ideally the tool would allow for the input of approximate building geometry and floor area, envelope performance (perhaps a way to choose from different constructions), lighting, equipment and occupant loads, and some way of selecting different HVAC system types and efficiencies. I know in Canada we have RETScreen and the Screening Tool. Are there similar such tools developed for US/Europe that you might recommend investigating?

Thank you, Dan

Wow, I'm super happy with all of the helpful responses that this question got. Thank you everyone!

@Daniel, are you looking for simplified calculations or simplified inputs for more detailed calculations? Or both?

I'm interested in tools which simplify the modelling process by simplifying the input process. The goal is to characterize the accuracy of tools which simplify the modelling process and to determine under which circumstances the simplified tools can provide reasonably accurate results for compliance modelling.

@Daniel, another question is whether you need the tool to give you the actual detailed model you can inspect, modify, and even take elsewhere or you are satisfied with shrink-wrapped tools that take simplified inputs, run the simulation, and display results?

I'm satisfied with shrink-wrapped tools that provide the results straight off, but also interested in other tools that may allow further development of the model.