View
4
Download
0
Category
Preview:
Citation preview
Energy Benchmarking 101
© 2013
Annual energy used by a building relative to its size:
kWh therms gallons cu. ft.
kBtu sf
Source
Site
Energy Source Multiplier
Electricity (grid) 3.340
Electricity (onsite renewable) 1.000
Natural Gas 1.047
Fuel Oil 1.010
Propane 1.010
Electricity Generation
Energy Source (EIA.gov)
Efficiency
Coal 33%
Petroleum 32%
Natural Gas 39%
Nuclear 33%
CBECS
•!Last data set collected in 2003 •!CBECS 2012 data collection starts in April 2013 •!Provides site and source EUI by building type •!Snapshot in time, does not set reduction targets
Energy Independence & Security Act of 2007 •!H.R. 6 page 121 – Federal Building Energy Efficiency Performance Standard •!In 2010, reduce fossil-fuel based energy consumption by 55% compared to
CBECS 2003 •!By 2030, reduce fossil-fuel energy based consumption by 100% compared to
CBECS 2003
2030 Challenge •!Immediate 60% reduction in fossil-fuel based energy, with 100% reduction by
2030 •!Underpinned by both ENERGY STAR Target Finder program, and CBECS 2003
data •!Progress measured by site EUI •!Focus on “carbon neutrality”, not “net zero energy”
0
10
20
30
40
50
60
70
80
90
100
2010 2015 2020 2025 2030
Zero Energy Building
AIA’s 2030 Commitment
CBECS National Average EUI (K122003) = 83.1
kBtu
/sf/
yr
Energy Independence and Security Act of 2007
Tod
ay
ENERGY STAR •!Rating earned based on measured (or modeled) performance compared to
similar buildings in same climate zone •!Limited number of building types are eligible (K12 schools are eligible!) •!Ratings based on source EUI – so fuel type plays a bigger role in this system
LEED for Schools •!Whole building rating system focused on school concerns •!Points awarded for design phase energy performance predictions •!Energy assessed based on predicted decrease from theoretical baseline •!Option exists to recertify over time using actual performance data (LEED for
Existing Buildings: Operations and Maintenance)
CHPS-VA •!Whole building rating system focused on school concerns •!Points awarded for design phase energy performance predictions •!Energy assessed based on predicted decrease from theoretical baseline •!Energy Performance Rating Goal of 75+ using Target Finder, strive to meet site EUI
target •!Option to participate in CHPS Operations Report Card program (not recertification)
LEED for Schools (v3) 5%-48% better than ASHRAE 90.1-2007
LEED for Schools (v4) 3%-50% better than ASHRAE 90.1-2010
CHPS-VA (2011) 15%-50% better than ASHRAE 90.1-2007
0
10
20
30
40
50
60
70
80
90
100
2010 2015 2020 2025 2030
Zero Energy Building
Zero Energy Capable
AIA’s 2030 Commitment
National Average EUI (K12) = 83.1
kBtu
/sf/
yr
Energy Independence and Security Act of 2007
Tod
ay
Virginia sample average = 67.67
North Carolina sample average = 70.72
Virginia sample average = 70.65
North Carolina sample average = 67.25
Virginia sample average = 66.83 North Carolina sample average = 67.17
Virginia sample average = 67.10
North Carolina sample average = 65.68
CBECS National average = 83.10
Zero Energy Capable
es ms hs district
VIRGINIA
51.55 - 87.87 39.16 - 100.57 47.35 - 115.84 49.01 - 93.68
NORTH CAROLINA
53.50 - 95.89 55.10 - 73.20 51.00 - 82.97 53.50 - 71.63
0
10
20
30
40
50
60
70
80
90
100
2010 2015 2020 2025 2030
Zero Energy Building
Zero Energy Capable
AIA’s 2030 Commitment
National Average EUI (K12) = 83.1
Hillandale ES = 29.75
kBtu
/sf/
yr
Energy Independence and Security Act of 2007
Tod
ay
80,713 square feet
35 classrooms 722 student capacity
800 student core
First buildings to achieve LEED Certification in
Henderson County
Recognized by the EPA’s ENERGY
STAR program for design and operations
38.0 35.1 29.8 33.7 31.9 30.4
0.0
20.0
40.0
60.0
80.0
100.0
120.0
2009-2010 2010-2011 2011-2012
Hillandale ES Mills River ES
National Average EUI (K12) = 83.1
North Carolina (Study) Average EUI (K12) = 65.7
!!Within 15o of east-west axis !!Classrooms on perimeter !!Light shelves at all classrooms !!Tubular daylighting devices !!Ease of circulation and visibility
DAYLIGHT
OVERHANG
SHADE
AMPLE INSULATION
http://newbuildings.org
Recommended