(a)(1) For Federal buildings for which design for construction began on or after January 3, 2007, but before August 10, 2012, each Federal agency shall determine energy consumption levels for both the ASHRAE Baseline Building 2004 and proposed building by using the Performance Rating Method found in Appendix G of ASHRAE 90.1-2004 (incorporated by reference, see Sec. 433.3), except the formula for calculating the Performance Rating in paragraph G1.2 shall read as follows:
(1) For Federal buildings for which design for construction began on or after January 3, 2007, but before August 10, 2012, each Federal agency shall determine energy consumption levels for both the ASHRAE Baseline Building 2004 and proposed building by using the Performance Rating Method found in Appendix G of ASHRAE 90.1-2004 (incorporated by reference, see Sec. 433.3), except the formula for calculating the Performance Rating in paragraph G1.2 shall read as follows:
(i) Percentage improvement = 100 x ((Baseline building consumption--Receptacle and process loads)--(Proposed building consumption--Receptacle and process loads))/(Baseline building consumption--Receptacle and process loads) (which simplifies as follows):
(ii) Percentage improvement = 100 x (Baseline building consumption--Proposed building consumption)/(Baseline building consumption--Receptacle and process loads).
(2) For Federal buildings for which design for construction began on or after August 10, 2012, each Federal agency shall determine energy consumption levels for both the ASHRAE Baseline Building 2007 and proposed building by using the Performance Rating Method found in Appendix G of ASHRAE 90.1-2007 (incorporated by reference, see Sec. 433.3), except the formula for calculating the Performance Rating in paragraph G1.2 shall read as follows:
(i) Percentage improvement = 100 x ((Baseline building consumption--Receptacle and process loads)--(Proposed building consumption--Receptacle and process loads))/(Baseline building consumption--Receptacle and process loads) (which simplifies as follows):
(ii) Percentage improvement = 100 x (Baseline building consumption--Proposed building consumption)/(Baseline building consumption--Receptacle and process loads).
(3) For Federal buildings for which design for construction began on or after July 9, 2014, each Federal agency shall determine energy consumption levels for both the ASHRAE Baseline Building 2007 and proposed building by using the Performance Rating Method found in Appendix G of ASHRAE 90.1-2010 (incorporated by reference, see Sec. 433.3), except the formula for calculating the Performance Rating in paragraph G1.2 shall read as follows:
(i) Percentage improvement = 100 x ((Baseline building consumption--Receptacle and process loads)--(Proposed building consumption--Receptacle and process loads))/(Baseline building consumption--Receptacle and process loads) (which simplifies as follows):
(ii) Percentage improvement = 100 x (Baseline building consumption--Proposed building consumption)/(Baseline building consumption--Receptacle and process loads).
(b) Each Federal agency shall consider laboratory fume hoods and kitchen ventilation systems as part of the ASHRAE-covered HVAC loads subject to the 30 percent savings requirements, rather than as process loads. Subpart B--Reduction in Fossil Fuel-Generated Energy Consumption [Reserved]