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• Petrus van Heerden
• Country Manager
• Kamstrup
• South Africa
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Beyond Billing
Smart Water Meters as an asset management tool
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How much water is lost? • Total cost NRW worldwide
conservatively estimated at $14billion per year
• 45 million cubic meters are lost daily through water leakage in the distribution networks(developing countries)
• Enough to serve nearly 200 million people.
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Source: WATER SUPPLY AND SANITATION SECTOR BOARD DISCUSSION PAPER SERIES P A P E R N O . 8
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The Danish water sector • A total of 2,622 water utilities
(2005)
• Highly decentralised water supply
• Drinking water is typically produced and distributed locally
• Wide spread in size – from big
water utilities delivering to 100,000s of people to small
utilities delivering to 10s of people
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Driving Danish water utilities • Non-profit companies by law • Subject to the National Meter Policy
requiring individual metering • Subject to the Water Sector Act
(2010) requiring benchmarking on operational costs
Investments in Smart Water Metering • convert costs to revenue • results in better benchmarking • reduced water loss to average 8.9% • SA 36.8% (WRC 2012)
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Highly regulated pricing (Danva)
Source: DANVA, Vand i tal, 2012
Water company - DKK10,9
Sewage company - DKK30
Tax (Water) - DKK5,4
Tax (Sewage) - DKK0,4
VAT (Water) - DKK4,1
VAT (Sewage) - DKK7,6
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Drill-down on the water price (Source: Danva)
Source: DANVA, Vand i tal, 2012
Revenue - DKK0,86
Production - DKK5,03
Distribution - DKK5,01
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Smart Water Metering • Electronic meters with wireless communication • Mobile or fixed communication network • Intelligent alarms in the meter • Detailed data about water usage
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Non-Revenue Water
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System input Volume
Authorised consumption
Billed authorised Billed Metered Revenue
Water Billed Unmetered
Unbilled authorised
Unbilled Metered
Non-Revenue
Water (NRW)
Unbilled Unmetered
Water losses
Apparent loss Unauthorised
Customer metering inaccuracy
Real loss
Leakage on transmission and/or distribution
Leakage and overflows at storage tanks
Leakage on service connections up to point of
metering
Leakage after water meters
Assessing Non Revenue Water ( Source: IWA)
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System input Volume
Authorised consumption
Billed authorised Billed Metered Revenue
Water Billed Unmetered
Unbilled authorised
Unbilled Metered
Non-Revenue
Water (NRW)
Unbilled Unmetered
Water losses
Apparent loss Unauthorised
Customer metering inaccuracy
Real loss
Leakage on transmission and/or distribution
Leakage and overflows at storage tanks
Leakage on service connections up to point of
metering
Leakage after water meters
Assessing Non Revenue Water ( Source: IWA)
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The Danish Business Case
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Short –term benefits • Billing according to actual consumption • Fast track from meter reading to billing • Proactive working with billing disputes • Less disputes due to better documentation • Improved accuracy in meter reading
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“After changing from mechanical to smart meters we document consumption precisely, more than a year back in time. Providing evidence at an early stage
helps settling disputes. Consumers have more trust in our meter readings now.” Eyvind Holst, Chairman, Toerring Water Company, DK
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Long –term benefits • Better Customer Service through data analysis • Lower Total Cost of Ownership • Detection of hidden leakages • Extending asset life and delaying investment
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“It used to be extremely difficult to localize leaks. First test reading of 255 new smart meters detected 3 leaks; two hot water tanks and a bath-room pipe.” Dennis Schrøder, Operational Manager, Hjerting Electricity and Water utility, DK
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Differences in investment • Same level of installation cost but different TCO • Smart meters typically go through 2 reverification periods • Vanewheel meters typically last 1½ reverification period (based on DK sample testing in the 6th year of installation)
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”After introducing individual smart metering the annual water consumption dropped from 12.000 m³ to just below 6,000 m³, bringing savings of 40,300 EUR per year” Niels Munthe, Energy Manager, Aarhus General Housing Association
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Difference in costs for meter reading Example: DK Utility with 6000 metering points read twice a year: Estimated costs using meter reading cards, twice a year 36,940 EUR Estimated cost using smart metering 4 times a year 10,880 EUR
Missing meter data Example: DK Utility with 6000 metering points read twice a year: Approx. 15% of the customers do not submit meter readings > costs for estimated billing No costs for estimated billing with smart metering
” Previously the annual consumptions report could take weeks, in some cases months. Today, we collect annual consumption data from 1,350 customers within a few hours using
smart phone.” Allan Kvist, Chairman, Auning Water Utility, DK
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Start flow registration Smart meters start at lower start flow Result is a higher volume measured Leads to a lower price per m³ Water loss Water loss above 10% is invoiced approximately 0,67 EUR/m³ in penalty
”“After changing to smart meters we document consumption precisely, more than a year back in time. Providing evidence at an early stage helps settling disputes. Consumers have
more trust in our meter readings now.”
Eyvind Holst, Chairman, Toerring Water Company, DK
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”“After changing to smart meters we document consumption precisely, more than a year back in time. Providing evidence at an early stage helps settling disputes. Consumers have
more trust in our meter readings now.”
Eyvind Holst, Chairman, Toerring Water Company, DK
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General findings • Benefits are found both with small,medium-sized and bigger water utilities
• Smart meters are efficient in minimizing non revenue water
• Smart meters can improve customer service as you better
understand the customers unique usage pattern and needs
• The smart meter is a perfect tool for water conservation
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More information Stand F12 www.kamstrup.com Thanks for your attention! Petrus van Heerden Country Manager SA [email protected]