energy management planning for small water systems - … · · 2015-10-22energy management...
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About the Environmental Finance Center Network (EFCN)
The Environmental Finance Center Network (EFCN) is a university-based
organization creating innovative solutions to the difficult how-to-pay issues of
environmental protection and improvement. The EFCN works with the public
and private sectors to promote sustainable environmental solutions while
bolstering efforts to manage costs.
This program is offered free of charge to all who are interested. The Project
Team will conduct activities in every state, territory, and the Navajo Nation.
All small drinking water systems are eligible to receive free training and
technical assistance.
The Smart Management for Small Water Systems Program
What We Offer
Individualized technical assistance, workshops, small group support,
webinars, eLearning, online tools & resources
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Who We Are
• Environmental Finance Center at University of Louisville
• Environmental Finance Center at University of Maryland, College Park
• Environmental Finance Center at University of North Carolina at Chapel Hill
• Environmental Finance Center at Wichita State University
• EFC West
• Great Lakes Environmental Finance Center at Cleveland State University
• New England Environmental Finance Center at University of Southern Maine
• Southwest Environmental Finance Center
• Syracuse University Environmental Finance Center
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Dedicated to enhancing the ability of governments and other organizations to provide environmental programs and services in fair, effective, and financially sustainable ways through:
• Applied Research
• Teaching and Outreach
• Program Design and Evaluation
How you pay for it matters
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• Asset Management
• Energy Use and Efficiency
• Meeting Regulatory Compliance
• Fiscal Planning and Rate Setting
• Multi-funding Coordination
• Communications and Decision-making
• Water Loss Reduction
• Working with Other Water Systems
• Financing
• Funding Programs
• Managing Small Utilities in Drought
Areas of Expertise
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Energy Management Workshop Series
• In-depth workshop focused on building system-specific energy management plans
– Workshop 1: Collecting data and getting started (Tuesday April 21st)
– Workshop 2: Prioritizing and funding projects (Thursday May 28th)
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10/22/2015
Workshop 1 Agenda Start Time Topic
9am Welcome and Introductions
10:00 Break
10:15 Why Are We Here?
11:00 Understanding Your Energy Bill
12pm Lunch (On Your Own)
1pm Developing and Comparing Your Baseline
2:15 Break
2:30 Review of Energy Assessments
3:00 High Impact Projects
3:45 Close-Out and Homework
4:00 End Day
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Electricity Prices in the States
Source: US Energy Information Administration, http://www.eia.gov/electricity/monthly/epm_table_grapher.cfm?t=epmt_5_6_a
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Why so high? According to WAPA
• Dependence on expensive fuel oil
– Recent transition to propane for base load has reduced costs
• Limitation on integrating renewables
– Maximize development of renewables (solar, wind, biomass, and ocean thermal)
• Lack of economies of scale
– Interconnection with Puerto Rico
• Spinning reserve
• Limited financial resources
– Increase efficiency and plants
• Environmental regulations
• Community acceptance
Source: WAPA’s Energy Production Action Plan,
September 2012
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Smart Management for Small Water Systems
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Energy Projections in USVI
Source: NREL, Energy Development in Island Nations, USVI Energy Road Map: Charting the Course to a Clean Energy Future.
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Smart Management for Small Water Systems
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Potential of Clean Energy in
USVI
Source: NREL, Energy Development in Island Nations, USVI Energy Road Map: Charting the Course to a Clean Energy Future.
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Why does the EPA want you here?
• Energy represents the largest controllable costs of providing water to the public
• Help water systems meet regulatory requirements to protect public health and the environment
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Energy Management Goals
• Improve energy efficiency & manage total energy consumption
• Control peak demand for energy
• Manage energy cost volatility
• Improve energy reliability
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Improve Efficiency & Manage Total Consumption
• Cost of electricity is based on two main components
– Quantity of electricity used (kWh)
– Demand for electricity (kW)
• On-peak vs. off-peak consumption affects rates
• Understanding the electric utility’s pricing policies (rate structures) is critically important
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Control Peak Demand for Energy • Electric utilities typically include a “demand charge” in their rate
structure
• Lower variability in electric demand over time (flattened demand curve)
– Minimize changes in peak demand throughout the course of a billing period
– Shifting loads from peak periods, typically during daylight hours, to off-peak periods
• Potential for significant cost savings by minimizing demand charges
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Manage Energy Cost Volatility
• Energy costs fluctuate
• Dramatic changes stress budgets
• Protect against volatility as much as possible
– Reducing need for energy
– Long-term procurement of energy
– Provisions for alternative energy sources
– On-site generation of energy
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Improve Energy Reliability
• Water utilities should be able to provide critical systems with adequate backup power
• Energy planning process should identify opportunities to improve energy reliability
– Protection against complete loss
– Identify changes in power quality that can damage equipment and/or
– Institute operating procedures to address changes in overall power availability
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EXERCISE: ASSESSING ENERGY MANAGEMENT SYSTEMS FOR BEST PRACTICES
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ENERGY MANAGEMENT PROGRAM DEVELOPMENT
Energy Management Workshop 1
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Energy Management Program - Basic Steps
• Step 1. Establish Organizational Commitment • Step 2. Develop a Baseline of Energy Use • Step 3. Evaluate the System and Collect Data • Step 4. Identify Energy Efficiency Opportunities • Step 5. Prioritize Opportunities for Implementation • Step 6. Develop an Implementation Plan • Step 7. Provide for Progress Tracking and Reporting
Source: NYSERDA
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Step 1 – Establish Organizational Commitment
• Is your team defined? Is your team diverse?
• Does it represent various interests and responsibilities within the facility? (Owner, operators, users?)
• Team responsibilities include: develop the plan, establish goals, define the resources needed, provide information to others (i.e. CIP team)
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Why bother?
• Without the commitment of several individuals at varying levels within your utility, successful implementation of an energy management plan will be difficult
• Think of The Avengers – no one individual could have saved the city; it took all of them working towards a common goal to be successful!
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Step 2 - Developing An Energy Baseline – What Should You Do?
• Gather basic information
– One year of data minimum
– Examples: utility billing records, O&M records, equipment or motor lists (horsepower & load)
• Organize treatment processes by functional area
• Evaluate energy bills and understand the energy rate structure
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Developing An Energy Baseline – What Else Should You Do?
• Review facility use data and compare it to energy use
– Identify wet weather, seasonal patterns
• Build a basic ‘model’ to organize data, and capture energy use patterns
• Create basic graphics and reports to communicate initial findings
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Why bother?
• Energy efficiency gains = $$ saved
– The process of investigating energy use, and improving awareness among staff, can provide measurable energy efficiency gains on the order of 3-5%.
• Value shown before resources committed
– Successfully developing a basic understanding of energy use can be a good ‘early victory’, allowing the team to demonstrate some value even before any significant resources are committed to the program.
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Step 3- Evaluate the System and Collect Data
• This step goes beyond the baseline development (historical records). It involves data collection in the field
– System walk-through (note operational information, motor sizes, etc.)
– Staff interviews (operational practices, maintenance practices/history, take suggestions)
– Energy performance data (field data from direct measurements, average equipment run time, sub-metering, etc.)
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Step 4: Identify Energy Efficiency Opportunities
• Energy efficiency opportunities can be defined as any system change that helps to reach a stated energy management goal.
• At this stage the energy management team should identify a broad array of energy efficiency opportunities
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Categories for Energy Efficiency Opportunities
• Capital program or equipment replacement
• Process change
• Operational change
• Automation or controls
• Maintenance improvements
• Business measures
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Step 5: Prioritize Opportunities for Implementation
• The final product of this step is a short list of energy efficiency opportunities that have been selected and carefully evaluated out of the list of opportunities generated in the previous step
• Identify a consistent method to compare and rank opportunities (consider both the monetary and non-monetary)
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Keys to Success
• Convert all energy efficiency opportunities characteristics two monetary terms whenever possible.
• Evaluate all energy management, including ancillary benefits when possible.
• Test the sensitivity of results to determine the impact of important assumptions (e.g. time horizons)
• Make sure that the final results make sense in terms of the utility’s capabilities.
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Step 6: Develop an Implementation Plan
• How to Do It – Business Plan • Actions required in this step include the following:
– List the projects chosen for implementation and describe the goals and objectives of the program
– Explain the resources needed, including a budget and financing plan – Develop any specifications needed, including design criteria and
procurement related documents – Provide any changes in standard operating procedures, and/or process
control strategies – Set the schedule for implementation, including milestones and gaining
the necessary regulatory approvals (if applicable) – Set realistic expectations for the project in terms of resources
required, schedule, procurement time frame, and expected results
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Step 7: Provide for Progress Tracking and Reporting
• The success of a project should be measured as it is being implemented
• The specific actions required in this step include the following:
– Assign the responsibility for tracking the progress of a project and reporting on that progress. Allocate the resources necessary to fulfill the responsibilities.
– Set the performance metrics that will be used.
– Create a communication plan. Identify who needs to be included in progress reports (examples: elected officials, public, etc.), when reports should be made, and any actions that need to occur in response to reports.
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Constraints on Implementing an Energy Program
• Organizational constraints
• Capital costs
• Process reliability
• Regulatory requirements and limits
• O&M capabilities, and non-energy O&M costs
• Engineering constraints
• Space availability
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It doesn’t have to be all or nothing!
Source: DOE’s Advanced Energy Retrofit Guide for K-12 Schools
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WAPA Rate Classes
Commercial • Customer charge
• Demand charge
• Surcharges
– Line loss
– Maintenance
– OPEB
– PILOT
– Insurance
• Decreasing block rate energy
charge
• Fuel charge
Large Power • Customer charge
• Surcharges
– Line loss
– Maintenance
– OPEB
– PILOT
– Insurance
• Uniform rate energy
charge
• Fuel charge
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Curtailable Large Power Rates
• Difference between large power and curtailable large power
• Designated load identified as curtailable and credited $2.22/kW per month
• Monthly customer charge is higher
• Subject to a minimum demand of 500 kW (versus 25 kW for LPS customers)
Source: Testimony of Bruce Oliver to Public Service Commission: http://www.psc.gov.vi/Docket_612-613/Docket%20612%20-%20Electric/Direct%20Testimony%20of%20Bruce%20Oliver%20-%20Electric.pdf
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• Funds administrative costs of providing
service to the customer – charged on a
per meter basis
Customer Charge
Commercial Large Power Curtailable Large Power
Single Phase: $6.33 Triple Phase: $12.65
$48.67 $131.70
*Per WAPA’s website, effective 1/1/14
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Demand Charges (billed per
kW) • Measured in kilowatts (kW), a measurement of
power demanded at a given instant in time.
• There are no “demand ratchets” in this rate structure,
where you can get “stuck” with paying for a peak of
demand for a long while, such as an entire year.
Commercial Large Power Curtailable Large Power
NA $1.95/kW -reduced rate (practically covers entire rate)
*Per WAPA’s website, effective 1/1/14
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• Line loss – funds projects geared towards
reducing line loss in the electric system
– $0.002196/kWh (Commercial & Large Power)
• Maintenance - Funds earmarked for ongoing
repairs, maintenance, and upgrades to
VIWAPA’s electric utility system
– $0.024863/kWh (Commercial & Large Power)
Surcharges (billed on kWh)
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• OPEB – Other Post-Employment Benefits
– $0.008668/kWh (Commercial & Large Power)
• PILOT – Payment in Lieu of Taxes to V.I.
Government
– $0.000686/kWh (Commercial and Large Power)
• INS – Covers the cost for WAPA to self-insure
– $0.001925/kWh (Commercial and Large Power)
Surcharges (billed on kWh)
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• Energy charge– funds the cost for
producing and delivering electricity plus
investment in the power plants and
facilities
– Commercial: Uniform Rate at
$0.103832/kWh
– Large Power: Decreasing Block Rate
Consumption Charges
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Fuel Charge
• Fuel charge – cost of fuel consumption collected from customers and paid directly to fuel supplier
– $0.279991/kWh (Commercial and Large Power)
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Smart Management for Small Water Systems
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The dominance
of the fuel charge
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Fuel charge variability over 2014
$0.30
$0.32
$0.34
$0.36
$0.38
$0.40
$0.42
$0.44
Fue
l Ch
arge
(p
er
KW
h)
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• Consumption charge: $21.05/thousand
gallons
• Fuel charge: varies
– $7.10 to $12.10/kgal
• Line loss surcharge: $0.72/thousand
gallons
WAPA Water Rates
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Smart Management for Small Water Systems
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Breakdown of Fuel Charge Rate
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STEP 2- DEVELOPING A BASELINE OF ENERGY USE
Energy Management Workshop 1
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The Value of Benchmarking
Consistent benchmarking in buildings results in energy savings and improved performance.
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Source: http://www.energystar.gov/ia/business/downloads/datatrends/DataTrends_Savings_20121002.pdf?8d81-8322
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Data Needs
• Bill Date
• Customer Charge
• Electric Use
• Electric Charge
• Demand
• Demand Charge
• Meter Usage Metric and
Measurement
Inputs • Average cost per kWh
• Average cost per day
• Average use per day
• Demand charges as a
percent of total bill
• Energy use intensity
Calculations
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Common Energy Use Intensity (EUI) Metrics
Metric Application
Btu/ft2 Any building
Btu/employee Office building
Btu/unit of product Assembly plant
Btu/lb of product Manufacturer
Btu/number of beds occupied Hotel or hospital
kWh/ft2 Lighting
kWh/ton Chilled water efficiency
W/ft2 airflow/min HVAC systems
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Think – Pair - Share
• What are your seasonal trends?
• Can you see changes in operations?
• How do changes in price compare to changes in energy use?
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ENERGY STAR Commercial Buildings Program
• Offers a strategic approach to energy management
• Enables building owners, managers, and tenants to save money & protect the environment
• Provides organizations with measurable information on energy savings and greenhouse gas emissions reductions from commercial buildings
• Builds on strong ENERGY STAR brand recognition
• ENERGY STAR on a building = Superior Energy Performance
• Benchmarking is the first step
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Want to do more?
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• ENERGY STAR Portfolio Manager is an effective management tool – it helps business and organizations by offering a platform to:
– Assess whole property energy and water consumption
– Track changes in energy, water, greenhouse gas emissions, and cost over time
– Track green power purchase
– Share/report data with others
– Create custom reports
www.energystar.gov/benchmark
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• Portfolio Manager is also a metrics calculator – it provides key performance metrics to integrate into a strategic management plan.
– Energy consumption (source, site, weather normalized)
– Water consumption (indoor, outdoor)
– Greenhouse gas emissions (indirect, direct, total, avoided)
– ENERGY STAR 1-to-100 score (available for many building types and wastewater treatment plants)
– Compare to national median energy use intensity (site, source)
– Compare baseline year vs. current year (energy, water, ghg)
www.energystar.gov/benchmark
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Understand Comparative Performance
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• ALL buildings can be benchmarked
• Benchmarking through Portfolio Manager enables you to:
– Compare one building against a national sample of similar buildings
– Compare all of your buildings of a similar type to each other
– Set priorities and targets for the use of limited staff time and/or investment capital
– Track performance over time and gain recognition
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To Get Started Benchmarking in Portfolio Manager
• Helpful data to have on hand
– Property Information
• Function
• Name, street address, ZIP/postal code
– Property type data
• Gross floor area
• Use details (ex. weekly operating hours, number of computers, number of workers on the main shift, etc)
– Energy consumption data
• Property-specific invoice information from all purchased and on-site generated energy for all fuel types
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• Hotels
• K-12 Schools
• Enclosed Mall
• Senior Care Facility
• Multi-family Housing
Portfolio Manager
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EXERCISE: SET UP PORTFOLIO MANAGER ACCOUNT (IF TIME AND INTERNET ALLOW)
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Source: NRAL Advanced Energy Retrofit Guide – K-12 Schools
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Source: NRAL Advanced Energy Retrofit Guide – K-12 Schools
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Review of Your Energy Assessments
• Assets – Primarily associated with drinking water system
• Nameplate Horsepower (HP)
• Variable Speed – for motors
• Calculated Power Consumption = Horsepower x 0.746 (conversion factor)
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Review of Your Energy Assessments
• Hours of Operation per Year – Either based on observation or staff report
• Total kWh per Year – Calculated power consumption x Hours of operation per year
• Average Run Time - Either based on observation or staff report
• Design Specs – Based on observation (HP and head) or staff report
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Review of Your Energy Assessments
• Operating Status – Based on observation or staff report
• Average Cost – Based on current WAPA rates
• Total Cost = Total kWh per year x Average cost
• Cost per MG = Total cost/Total flow (Total flow based on estimates)
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Source and Treatment of Water Systems Indoor – Primary Indoor – Secondary
Other Source Treatment Source Treatment
Lovenlund Apartments
Rainwater catchment
Blended with R.O. water
Groundwater well
Bag filtration and R.O.
Gray water effluent for toilet flushing
Cowpet Bay Village – West
Rainwater catchment
Chlorine and U.V.
Brackish groundwater well
Bag filtration and R.O.
Gray water effluent for toilet flushing and irrigation
Wesleyan Academy
Rainwater catchment
Chlorine and point-of-use filters
WAPA purchase Drinking water from water coolers
VI Montessori School
Rainwater catchment
Ultra-Violet Water trucks and wells
WWTP effluent used for landscape irrigation; Groundwater well for irrigation; Run-off collected for irrigation
Tutu Park Mall Groundwater well
Bag filters and R.O. and UV
WAPA Purchase
R.O.
Seaview Nursing Home
Rainwater catchment
Chlorine and point-of-use filters
Water trucks Chlorine and point-of-use filters
Plantation Manor
Rainwater catchment
Chlorine and cartridge filter
Water trucks Chlorine and cartridge filter
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Energy Use of Treatment
• Electricity consumption for water treatment can range from 0.05 to 0.7 kWh per m3 dependent on initial water quality and treatment technique.
Source: Lawson et. al, The Effects of Water-Energy Nexus on Potable Water Supplies in Potable Water, The Handbook of Environmental Chemistry. 2014.
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Approximate Energy Use of Water Treatment Technology
0
0.5
1
1.5
2
2.5
3
Ene
rgy
Inte
nsi
ty (
kWh
m-3
)
Maximum
Minimum
Source: Lawson et. al, The Effects of Water-Energy Nexus on Potable Water Supplies in Potable Water, The Handbook of Environmental Chemistry. 2014.
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Questions to consider when reviewing your assessment?
• Compare internal to external costs
• Are you using your lowest cost water first for drinking? (Hint: It’s rain water)
• Maximize your use of rain water with water efficiency
• Important to meter
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Other Major Energy Uses
Lovenlund Apartments
Outdoor lighting, high-use plumbing
Cowpet Bay Village – West
Wastewater treatment plan
Wesleyan Academy Computer lab
VI Montessori School
Air conditioning, drinking fountains
Tutu Park Mall Parking lot lighting, laundry facility, air conditioning
Seaview Nursing Home
Window air conditioning, outdoor lighting, high-use plumbing, laundry facility, kitchen
Plantation Manor Laundry facility, air conditioning
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High Impact Project Ideas
• Reduce Cooling Load
• Water Conservation
• Landscape Efficiency
• Motor Efficiency
• Wastewater Treatment Efficiency
• Reduce Lighting Demand
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Factors that Influence Your Cooling Needs
• Outdoor temperature
• Desired temperature
• Square footage
• Insulation
• Kitchen (or boiler, particularly if active during cooling times)
• Direct Sunlight
• Number of occupants
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Reduce Cooling Load
Right- Sizing Your Cooling System Residential Light commercial Large commercial
Single-phase unitary Three-phase
Cooling capacity: 65,000 Btu/hr or less
135,000 Btu/hr >135,000 Btu/hr and <240,000 Btu/hr
Designed specifically for residential applications
Small businesses and commercial properties
Oversized system: higher initial costs, reduced efficiency, short-cycling > poor humidity control, increased fan speeds > increased duct leakage
Oversized system: ineffective, hard on system
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Options to Reduce Cooling Load - Equipment
• Natural Gas/Diesel Absorption Cooling System
– 45% over air cooled
• Chilled Beams
– 80% fan motor savings achieved
• High Efficiency AC
– Variable Refrigerant Volume
– Heat Recovery
• Zoning
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Equipment Rating • Seasonal Energy Efficiency Ratio (SEER) – measure of
equipment energy efficiency over the cooling season (<65,000 Btu/hr)
• Energy Efficiency Ratio (EER) – measure of efficiency in the cooling mode that represents the ratio of total cooling capacity (Btu/h) to electrical energy input (Watts).
• Integrated Energy Efficiency Ratio (IEER) – cooling part-load EER efficiency for commercial unitary air-conditioning and heat pump equipment on the basis of weighted operation at various load capacities
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Smart Management for Small Water Systems
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EnergySTAR Cooling Products
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Options to Reduce Cooling Load - Design
• Building envelope –Increase insulation
• Window insulation – Double-pane and Low-e
Image source: NREL
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Bjerget House, St. Croix, USVI
• 182 year old historic property, including: • One three-story main house, • One three-floor east building, and • Three single-story utility buildings • 10,000 sq. ft. in total
• Sources:
• Steve Garner of TropiTech, Inc.
• Nora Barger of SEEA / WISE.
• http://stcroixsource.com/content/news/local-news/2012/06/12/bjerget-house-gets-greener-energy-overhaul
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Bjerget House
– HVAC improvements
• Highly efficient variable refrigerant flow system with an inverter driven compressor
• Zoning
– Window film improvements
– Lighting improvements
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Bjerget House
• Annual Savings:
• 161,080 kWh
• $75,709
• 3.05 years (for simple payback)
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Barriers to Improved Cooling Efficiency
• High up-front costs
• Split incentives between building owners and tenants
• Energy efficiency not reflected in appraised value
• Just-in-time replacement
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No-to-Low Cost Projects
• Inspect cooling equipment
• Test AHUs
• Maintain economizers
• Inspect and clean coils
• Inspect and clean fans
• Replace air filters
• Inspect air ducts
• Maintain controls
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Water Conservation
• Save on
– Energy required to pump and treat water
– Energy required to treat wastewater
– Need to purchase expense water
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Use Less Water • Proximity Hotel, Greensboro, NC:
• Water usage has been reduced by 33% by installing high-efficiency Kohler plumbing fixtures, saving two million gallons of water the first year.
• http://www.proximityhotel.com/green.htm
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Use Less Water • Treasure Beach Hotel, Barbados
– To reduce water use by 10%, the hotel adopted the following measures.
– Flow diverters and toilet dams. – Low flow showerheads and faucet aerators. – Sub meters for kitchen and irrigation. – Daily meter readings. – Water hoses fitted with control nozzles. – Drip irrigation system controlled by a timer and a
moisture probe. – Towel and linen reuse program. – http://www.caribbeanhotelandtourism.com/downloads/CHTAEF_WaterConservation.pdf
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Water Conservation
• How old are your fixtures?
Fixture Pre-1994 Post-1994 WaterSense
Toilets 3.5 gpf 1.6 gpf 1.28 gpf
Urinals 1.5 gpf 1.0 gpf 0-0.5 gpf
Showerheads 2.75 gpm 2.5 gpm 2.0 gpm
Faucets 2.75 gpm 2.2 gpm 1.5 gpm
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Laundromats: Case Study San Antonio Westin Hotel
• High efficiency equipment = 45% water savings
• Last-rinse, first-wash reclaim = 20% in water savings
Overall water use reduced from 2.82 gallons per pound to 0.99 per pound
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Smart Management for Small Water Systems
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10/22/2015
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10/22/2015
Use Less Water
• A case study of a Seffner, FL high school: – Could save 4+ million gallons of water/year
– Equates to 22% of its annual water use
• Low-flush toilets: 790 kgal and $6,100
• Cooling adjustments: 60 kgal and $150
• Irrigation changes: 3,100 kgal and $7,600
http://www.swfwmd.state.fl.us/conservation/waterwork/
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10/22/2015
Landscape Irrigation Efficiency
• High-efficiency irrigation system
– Drip irrigation
– Moisture probe
• Use reclaimed water – Let’s hear from the experts
– YOU
• Use of native plants
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Non-native, High Water Use Native, Drought Tolerant
Morgan, Michael and Thomas Zimmerman. Evaluating Drought Tolerance of VI Native Trees Suitable for Landscaping. 2013
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10/22/2015
Motor Efficiency
• Various options
– Premium Efficient Motors
• Lower losses result in cooler motors
• Manufactured to closer tolerances (Better balance/bearing life)
• Most motors are supplied with polyurea-based grease
– Adjustable Speed Motors (Variable Frequency Drive)
– The “right size” matters
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10/22/2015
The Villa Magna condos, Highland Beach, FL
• A 92-unit luxury condominium complex. Source: http://www.pump-zone.com/topics/motors/motors-drives-improve-high-rise-condo-efficiency
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10/22/2015
Villa Magna condos: VSDs
By using drives to control the domestic water system in the high-rise building, residents now have constant water pressure despite usage.
Ten-horsepower variable speed motors
controlled by drives were selected for
the system to maintain constant water
pressure under different flow rates.
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10/22/2015
Improve Energy Efficiency, Example 1
• Replaced fixed speed pump motors with variable speed drives and motors
• Installed solar panels, heat pumps, energy efficient lighting and appliances
• Pumping system is now more reliable
• Significant savings on electricity and water
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10/22/2015
Villa Magna condos: Results
• Saving about $2,000 per month on their water bill.
• And have saved $24,000 on electricity across the past year.
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10/22/2015
Manage Motor Inventory • Plan Ahead! When a motor goes out is not the time to decide
which one you need
• Resources
– Department of Energy’s MotorMaster+
• Software tool to help you compare and understand motor decisions
– Motor Decisions Matter: http://www.motorsmatter.org
• Motor Planning Kit
• Simple Savings Spreadsheet
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10/22/2015
Wastewater Treatment
• Variable Blower Air Flow Rate: Require that aeration system and aerobic digester blowers have variable air supply rate capability • 15-50% reduction in energy use
• Dissolved Oxygen Control: Dissolved oxygen monitoring and control technology
– 20-50% reduction in energy use
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Reduce Lighting Demand
• Hardware
– LEDs
– Fluorescents
– Motion sensors
• Operations
– Clean
– Check light levels
– Establishing a
group relamping
program
– Inspect controls
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LED Lighting at Cree (Indoor and Outdoor)
• 49% reduction in energy
use = $160,000 energy
savings per year
• Maintenance costs
reduced
• Improved lighting quality
> improved morale
• Uniform, shadow-free
light > enhanced security
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10/22/2015
Other Low-Cost Energy Saving Options
• Timers and occupancy sensors
• Power strips
• Generator “exercise” timing
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Renewable Energy
• Solar PV
• Solar Water Heating
• Wind
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Smart Management for Small Water Systems
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10/22/2015
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10/22/2015
Energy Management Program - Basic Steps
• Step 1. Establish Organizational Commitment • Step 2. Develop a Baseline of Energy Use • Step 3. Evaluate the System and Collect Data • Step 4. Identify Energy Efficiency Opportunities • Step 5. Prioritize Opportunities for Implementation • Step 6. Develop an Implementation Plan • Step 7. Provide for Progress Tracking and Reporting
Source: NYSERDA
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10/22/2015
Homework • Input energy information into Portfolio Manager
until you have at least three years of data on record
– Send us report
• Using all resources at your disposal, identify at least five potential projects that could increase energy efficiency at your utility (and associated costs)
• Be prepared to present for 10-15 minutes on both at next workshop