do we have any area requirement for energy modeling i.e. Minimum area to opt for Option 1 Whole building energy modeling aproach for EAP2?

Hi All, I am working on a LEED NC 2009 project and have questions about filling up the v2009_Minimum Energy Performance Calculator_v06. Hope someone can give me some advice.

This was posed in another spot on LEEDuser and I thought it was worth asking here. Is there a rule to use initial vs. long term R-values?

Does any body know how to set "Maximum Primary Air Flow Rate" ,"Maximum Secondary Air Flow Rate" ,"Minimum Primary Air Flow Fraction" and "Fan On Flow Fraction" in energyplus to meet G3.1.3.15 "--

The Bird's Eye View comments on this page indicate that the USGBC will allow projects to meet the 10% minimum energy performance threshold with onsite renewable energy.

Does LEED NC v2009 allow us to model and receive credit for energy savings resulting from DHW conservation due to the installation of low-flow fixtures inside of apartments in a multifamily buildin

90.1 only says above grade wall, but if we have a wall that's directed connected to another building, should we also include those wall area in the calculation?

Hello, We have a project where our resort rooms will be using spray foam insulation above a concrete slab, set in zone 1. Our rooms are actually small villas.

I use Carrier-HAP and according to ASHRAE 90.1 G.1 #4, all baseline HVAC fans should be running continuously when the space is occupied and cycled when the space is unoccupied.

Hi, We are currently responding to LEED Reviewer comments for a building.