Find out the energy code for your state's jurisdiction:
http://www.energycodes.gov/status-state-energy-code-adoption
These prescriptive sub-sections of Code could be avoided:
Under C402 Envelope:
C402.2 - Insulation Requirements (Prescriptive)
C402.3 - Fenestration (skylights required per 402.3.2) (Prescriptive)
Under C403 Mechanical:
C403.3 - Simple HVAC Systems and Equipment (Prescriptive)
C403.4 - Complex HVAC Systems and Equipment (Prescriptive)
Under C405 Lighting:
C405.5 - Interior Lighting Power Requirements (Prescriptive)
C406 - Additional Efficiency Package Option - (Must Pick One) (Prescriptive):
1. C406.2 - Efficient HVAC Performance
2. C406.3 - Efficient Lighting Systems
3. C406.4 - On-site Renewable Energy
By doing:
C407 - Total Building Performance:
(Cost Budget Analysis proving the building energy cost will be equal to or less than 85%
of the standard reference design building)
And following the Key Provisions:
C407.2 - Mandatory Requirements -
Requires that the criteria of sections C402.4, C403.2, C404, and C405 be met.
C407.3 - Performance Based Compliance
C407.4 - Documentation
C407.5 - Calculation Procedure
C407.6 - Calculation Software Tools
Source: International Energy Code 2012
Other References:
Department of Energy:
Advanced Buildings Core Performance:
http://www.advancedbuildings.net/core-performance
ASHRAE:
