Transcript Effective Energy Management

Effective Energy Management
Keys
• Save energy
• Lower utility operating costs
• Maintain or improve operations
• Support corporate goals
ANSI Std MSE 2000:2005
• A Management System for Energy
• Parallels ISO 14001:2005, Environmental
Management System
• Documentation and Record Keeping
• Management Commitment & Policy
Energy & Environment
• Interconnected
• Energy Audit = Inventory of Emissions
Sources.
• Reduce the risk of non-compliance with
emissions regulations.
Why?
http://www.ase.org/uploaded_files/industrial/5_Pathfinding%20Mar05.pdf
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.
Role of Energy Mgr
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
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
Cost Savings “Triple Crown”
• No capital outlay
• Refunds from utility company
• Savings every month going forward
So Many Meters & Bills & Calls
Every Home and Business Has At Least 2 Of These
Read and Billed Every Month
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
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
Bill History Is A Pattern
Electric Use Per Day Per Billing Period
kWh/Day/Period
12,000
10,000
2007
8,000
2008
6,000
2009
4,000
2010
2,000
2011
Jan
Feb Mar
Apr
May Jun
Jul
Aug Sep
Oct
Nov Dec
Month
Electric Cost Per Unit Per Billing Period
kWh/Day/Period
$0.1000
$0.0800
2007
2008
$0.0600
2009
$0.0400
2010
2011
$0.0200
$Jan
Feb Mar
Apr
May Jun
Jul
Month
Aug Sep
Oct
Nov Dec
Utility Tracking
• Track utility bills each month and establish normal pattern
for process/property for each type of utility
• Check utility meters in the field for correlation to what
Accounting is paying on the utility bills.
• Digitize utility bills for ease of retrieval when researching
potential savings opportunities
• Establish Utility Analyst in Accounting if you have many
properties and accounts
Energy Footprint
Source:http://www.eere.energy.gov/industry/energy_systems/footprints.html
Most Common Problems
• VFD’s that don’t modulate,
• faulty control valves,
• controls out of calibration,
• static pressure higher than required,
• night setbacks not implemented,
• equipment operating more than necessary or inefficiently,
• EMCS never programmed,
• improper sequence of operation,
• simultaneous heating and cooling,
• outside air damper settings/economizer controls.
Types of Audits and Costs
Type
Cost ($/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
Carbon Emissions
Association of Energy Engineers
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http://www.aeecenter.org
Questions?
Thank You!