Water and Energy Efficiency in Municipalities: Successful, FieldTested WATERGY Approaches

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• JUDITH BARRY
• ? Specialties energy environmentally
  sustainable growth
• ? Experience non-profit, private, public
  (USAID), academic
• ALLIANCE TO SAVE ENERGY
• ? Non-profit, non-partisan, established 1977
• ? Mission To promote energy efficiency
  worldwide
• ? Experience in over 30 countries

WATERGY Helping cities distribute water treat
wastewater efficiently--saving energy, water
money WHY IS THIS IMPORTANT? ?
Every liter of water that passes thru a system
has a significant energy cost ?
Leaves more funds for crucial and often
under-funded public services. ? Water
supplied that is lost in developing countries
1/3 to ½ AND ITS COST EFFECTIVE
? Rapid Payback generally ranges from
immediate to 2 years ? Huge Savings
at least 20 shaved from energy costs much
higher possible ? Meet growing needs
with less if any new infrastructure
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CASE STUDY Performance Contracting Applied to
WaterEMFULENI, SOUTH AFRICA

• PROBLEM
• 80 of water delivered was lost through
  leaking plumbing fixtures!
• Enough to fill 2 Olympic-size swimming pools
  every hour!
• Exacerbated by high pressure in bulk water
  supply lines
• SOLUTION
• Pressure reduction
• Water engineering firm acting as an ESCO gets
  20 of savings
• Build-Own-Operate-Transfer to municipality after
  5 years
• RESULTS
• Payback period 3 months
• Annual Savings
• COST3.8 million
• ENERGY gt14 million kWh
• WATER7 million kL
• CO2 Emissions avoided12,000 tonnes

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CASE STUDY Water Efficiency Enables Service
ExpansionFORTALEZA, BRAZIL

• PROBLEMS
• Many households not connected to service
• Many inefficiencies pumps, OM,
• system management
• Utility couldnt afford energy costs
• PROJECT
• ? automated controls on pressure pumping
• ? improved data collection analysis
• ? improved motor efficiency
• (replaced or rewound them)
• RESULTS
• 88 million kWh saved over 4 years
• while adding 88,000 new connections using
  same amount of water
• 2.5 M saved every year w/an investment of
  only 1.1 M
• Payback 7 months

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For More InformationJudith Barry206-816-2860jb
arry_at_ase.org
Funders
US Agency for International Development
International Finance Corp. Inter-American
Development Bank The Coca Cola Company So.
Africa Dept. of Water Affairs
Forestry Municipalities (especially Mogale City
Emfuleni in So. Africa) Renewable Energy Energy
Efficiency Partnership