effective energy management. keys save energy lower utility operating costs maintain or improve...
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Effective Energy Management
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Keys
• Save energy
• Lower utility operating costs
• Maintain or improve operations
• Support corporate goals
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ANSI Std MSE 2000:2005
• A Management System for Energy
• Parallels ISO 14001:2005, Environmental Management System
• Documentation and Record Keeping
• Management Commitment & Policy
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Energy & Environment
• Interconnected
• Energy Audit = Inventory of Emissions Sources.
• Reduce the risk of non-compliance with emissions regulations.
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Why?
http://www.ase.org/uploaded_files/industrial/5_Pathfinding%20Mar05.pdf
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Benefits• Reduced costs, improved efficiency, and diminished environmental impact.
• Effective and continually improved energy performance.
• Greater organizational involvement and competency concerning energy issues.
• Better communication about energy management inside and outside the organization.
• Better relationships with energy-related suppliers.
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Role of Energy Mgr
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Recommended Process
• Achieve savings without capital outlay
• Establish benchmarks and budgets
• Collaborate with other departments
• Plan and implement specific property actions
• Verify, document and report
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No Capital Outlay?
• Purchase electricity or natural gas from alternate supplier
• Change rate codes and identify on-going billing savings
• Thermostat settings
• Turn things off
• Etc
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Cost Savings “Triple Crown”
• No capital outlay
• Refunds from utility company
• Savings every month going forward
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So Many Meters & Bills & Calls
Every Home and Business Has At Least 2 Of These
Read and Billed Every Month
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Important Points
• Utility bills aren’t like other payables
• Small cost savings might be bigger than you think
• Communication between Accounting and Property Management leads to lower utility bills
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Cost Has Two Parts
• Property related UNITS per DAY
– Equipment, its control, operation and maint.
• Utility related COST per UNIT
– Rates and charges by utility
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Bill History Is A PatternElectric Use Per Day Per Billing Period
-
2,000
4,000
6,000
8,000
10,000
12,000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Month
kW
h/D
ay
/Pe
rio
d 2007
2008
2009
2010
2011
Electric Cost Per Unit Per Billing Period
$-
$0.0200
$0.0400
$0.0600
$0.0800
$0.1000
Jan Feb Mar Apr May Jun Jul Aug Sep Oct Nov Dec
Month
kW
h/D
ay
/Pe
rio
d 2007
2008
2009
2010
2011
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Utility Tracking
• Track utility bills each month and establish normal pattern for process/property for each type of utility
• Check utility meters in the field for correlation to what Accounting is paying on the utility bills.
• Digitize utility bills for ease of retrieval when researching potential savings opportunities
• Establish Utility Analyst in Accounting if you have many properties and accounts
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Energy Footprint
Source:http://www.eere.energy.gov/industry/energy_systems/footprints.html
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Most Common Problems• VFD’s that don’t modulate,
• faulty control valves,
• controls out of calibration,
• static pressure higher than required,
• night setbacks not implemented,
• equipment operating more than necessary or inefficiently,
• EMCS never programmed,
• improper sequence of operation,
• simultaneous heating and cooling,
• outside air damper settings/economizer controls.
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Types of Audits and Costs
Type Cost ($/sf 1997$)
Preliminary Audits $0.013 to $0.030 per sf
Single Purpose Audits $0.030 to $0.070 per sf (lighting)
$0.050 to $0.090 per sf (HVAC & Controls)
Comprehensive Audits $0.180 to $0.500 per sf (<50,000sf)
Less than $0.120 per sf (>250,000 sf)
http://www.energy.ca.gov/reports/efficiency_handbooks/400-00-001C.PDF
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Carbon Emissions
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http://www.aeecenter.org
Association of Energy Engineers
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Questions?
Thank You!