Page 200 - The Engineering Guide to LEED-New Construction Sustainable Construction for Engineers

178 Cha pte r F o u r

Building Energy System IPMVP Vol. III
Types Option Method Name
Simple, easily isolated Option B Energy Conservation Measure (ECM)
(LEED 2009 Option 2) Isolation
Complex (LEED 2009 Option D Whole Building Calibration Simulation
Option 1)

TABLE 4.5.1 Summary of IPMVP Approaches for EAc5

addition to the development of an M&V Plan, there may be a substantial amount of metering
which may be needed on various building systems to measure the energy usages and
savings. Table 4.5.1 summarizes these two approaches.
It is important that the submittals include the IPMVP option chosen, a copy of the
M&V Plan as written according to the requirements in IPMVP Volume III, appropriate
models and calculations based on the data collected, and a narrative if there are any
special circumstances or explanations of calculation methods. This submittal must
cover at least a full year of postconstruction occupancy, with this minimum one year
time period beginning after the building has reached a reasonable occupancy and use
level. Therefore, it is not usually reasonable to schedule the submittal exactly one year
from the certificate of occupancy (CofO), which may be issued by the local building
official or building authority. Instead, the project team should estimate an occupancy
schedule, keep track of the building occupancies, and have the one-year period begin
after most of the uses are established. In the case where one group plans to be the sole
occupant of the new building and move the entire workforce within a month of issuance
of the CofO, then the one-year period may start relatively quickly after construction
ends. In the case where an office building is constructed that has multiple occupants,
there may be some floors or areas that may take a year or so after construction to find
tenants, and the verification of this credit may take longer. If the expected energy
savings are not being experienced, then a process for corrective action must also be
submitted and implemented. There is also technical guidance for adapting this credit to
projects with district energy systems on the USGBC Registered Project Tools page found
at http://www.usgbc.org/projecttools.

Special Circumstance and Exemplary Performance
EAc5 has been given an EB notation by the USGBC. It is also designated as a credit
that needs a construction phase submittal, as much of the activity is during or
postconstruction. There is no EP point available for this credit.

4.6 EA Credit 6: Green Power
The intent of EAc6 is to encourage the use of power from a power grid that has been
made from renewable energy sources. Projects were awarded one point for this credit
in LEED 2.2 and will be awarded two points in LEED 2009.
USGBC Rating System
LEED-NC 2.2 lists the Intent, Requirements, and Potential Technologies and Strategies
for EAc2 as follows, with additional verbiage from LEED 2009 to number the options: