Can someone explain the basic terminology of the equest modeling.
Right now I do alot of commercial energy audits for existing buildings that usually need improvements on lighting,hvac systems and building envelope.

Spreadsheets and parameter writing Based on ASHRAE 90.1.2004 or 2007 is usually what i do to show savings, yet as I Move into more complex projects, I would like to do more modeling.

I have entered some sample existing buildings into equest, and want to know a basic answer to how many models are needed for one building to prove savings.
Could some one explain the definitions -In ASHRAE 90.1.2004 that defines them , yet I am confused on how many models needed.

Baseline building design
Baseline building performance
Proposed Building performance

Would I need 3 models of one building?1.the current condition of existing building model
2.The 90.1 2004 ASHRAE model or minimum standards
3. Proposed energy improvement model
of energy retrofits proposed.

thanks in Advance

Mike Steadman