managing energy in san antonio public buildings
DESCRIPTION
Leading by Example Philip Gates, CEM, CMVP, EIT Energy Manager. Managing Energy in San Antonio Public Buildings. How to begin?. Energy Management Responsibilities. Public Buildings: By the Numbers. 15,000,000 sqft of building area. Public Buildings: By the Numbers. - PowerPoint PPT PresentationTRANSCRIPT
1
Managing Energy in San Antonio Public Buildings
Leading by Example
Philip Gates, CEM, CMVP, EITEnergy Manager
H
ow to
beg
in?
Energy Management Responsibilities
3
Municipal Facility Retrofits
Energy ReportingMeasurement &
Verification
Municipal Energy Design & Standards
City-Wide Energy Codes and Policies
Public Buildings: By the Numbers
4
15,000,000 sqft of building area
Pu
blic
Bui
ldin
gs:
B
y th
e N
umbe
rsTotal facility sites: 657
Owned & operated: 346
Public Buildings: By the Numbers
6
Elec-tric-ity; $23
Nat-ural gas; $2
Water; $4
Steam &
chilled wa-ter, $5
Annual Utility Costs:(in millions)
$34
Utility accounts:249 natural gas
2,125 electric885 water
4 steam/CHW
Public Buildings: By the Numbers
7Sep
2007
Mar
200
8
Sep
2008
Mar
200
9
Sep
2009
Mar
201
0
Sep
2010
Mar
201
1
Sep
2011
Mar
201
2
Sep
2012
Mar
201
3
Sep
2013
-
2,500,000
5,000,000
7,500,000
10,000,000
12,500,000
15,000,000
17,500,000
20,000,000
22,500,000
25,000,000
27,500,000
-
50,000
100,000
150,000
200,000
250,000
300,000
350,000
400,000
450,000
500,000 City of San Antonio Energy Consumption
Electricity
Natural Gas
Elec
tric
ity C
onsu
mpt
ion
(kW
h)
Gas
Con
sum
ptio
n (C
CF)
7 year low
-4% vs. 2012
Mun
icip
al R
etro
fits:
Impa
ct P
roje
cts
com
plet
ed/u
nder
way
(5 y
ears
)
Total Projects 398
Total Facility Sites Improved 180
Capital Investment $36,127,097
Avoided Cost, $/yr $4,219,509
Rebates Received $5,427,701
Simple Payback, years 8.7 / 3.1
Electricity Savings, kWh/yr 58,227,372
Natural Gas Savings, CCF/yr 69,095
Emissions Reductions
tons C02e/yr 24,263
lbs NOx/yr 26,731
lbs VOCs/yr 596
Projects Accomplished & Underway
9
Immed. 1yr 3yr 4yr 5yr 9yr 25yr
Retro-Commissioning• Low-$ system tune-ups• 5 buildings, 3M sqft• $316K annual savings
PC Energy Mgmnt• Software solution• 6,500 devices• $200K annual savings
Pool Pump Control• Stop over-circulating• 24 Public Pools• $70K annual savings
LED Street Lighting• Replace high wattage fixt.• 25,000 fixtures• $, kWh annually
Chillers & DX Units• Eff. equip. w/ control• 40 buildings• $154K annual savings
Exterior Lighting• Fluor., LED• 108 sites• $155 annual savings
Interior Lighting• Fluor., LED, control• 135 sites• $1.5M annual savings
Window Film• Reduce solar heat gain• 39 buildings, 184Ksqft• $289K annual savings
Municipal Facility Retrofit Strategy
1. Continuously benchmark facility energy use2. Prioritize facilities
Heavy usage High public visibility
3. Conduct energy assessments4. Self-manage retrofits, quick payback first5. Measure & verify utility savings (avoided cost)6. Revolve energy savings and rebates
Comprehensively retrofit all facilities 10
Best Practices: Technical & PM Develop in-house expertise Train building operators; preventative maintenance Install control systems your staff can operate Exercise a robust compliance protocol
Quality control and field verification is essential
11
Best Practices: Technical & PM Benchmark all buildings with significant energy use
Measure & Verify utility savings (in-house) Large portfolio: whole building utility bill analysis, IPMVP Option C
Follow life-cycle forcapital-intensive upgrades
Commission or functionallytest every project
Simple Solutions: Set points,operating hours, equip. right-sizing
12
13
1895 1905 1915 1925 1935 1945 1955 1965 1975 1985 1995 20050
25
50
75
100
125
150
175
200
225
250
275
300
ConventionCenter
HamiltonCommunity
Center
WestsideYMCA
Public SafetyTechnology Center
North PoliceSubstation
Nueva StreetMarina
StormwaterOperations
City Hall
EmergencyOperations
FireHeadquarters
InternationalCenter
MunicipalPlaza
SoutheastService Center
SemmesLibrary
ParmanLibrary
Energy Performance of Municipal Facilities by Year Built
Clinic Entertainment/Culture
Fire Station Library
Office Other
Parking Garage Police Station
Recreation Social/Meeting
Year Built
Ener
gy U
se In
tens
ity (k
Btu
/sqf
t/yea
r)
NationalAveragesby Type
H
igh
Ene
rgy
Use
Low
Ene
rgy
Use
Best Practices: Financial Budget is war: Know thy CFO, budget director, & budget analyst
Tell the full fiscal impact of your work: Reduced energy costs Accomplished deferred maintenance projects Reduced operation and maintenance costs
Review bills monthly & know thy rate categories Exercise fiscal temperance with savings Incur no debt & always be cash-positive
14
Seed Funding
Implement Retrofits
Quantify Utility
Savings
Appropriate Savings &
Rebates
Energy Efficiency
Fund
$$
15
General Fund
2 Different Approaches to 1 Project
16
Self Managed Performance Contract$0
$1,000,000$2,000,000$3,000,000$4,000,000$5,000,000$6,000,000$7,000,000$8,000,000$9,000,000
Proj
ect C
osts
$3.6M
$7.7M
$6.0M
17
Recommended Free Resources ENERGY STAR Portfolio Manager Noesis Energy’s M&V platform EVO measurement & verification guidelines SECO LoanSTAR revolving loan fund SECO QuickCalcs Spreadsheets DOE State and Local Energy Efficiency
Action Network (SEE Action) DOE eQuest energy model
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Thank you!
Philip Gates, CEM, CMVP, EITEnergy Manager(210) 207-1444