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  • Time of use tariffs: implications for water efficiency

    Author(s)
    Cole, Grahame
    O'Halloran, Kelvin
    Stewart, Rodney
    Griffith University Author(s)
    Stewart, Rodney A.
    Year published
    2011
    Metadata
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    Abstract
    Water utilities undertake long term planning for water source security, often with forecast cycles of 20 to 30 years. Whilst this planning is generally involved with investigations of source water abstraction security and the need to build dams or to increase the recharge rate of groundwater aquifers, planning for water efficiency gains occurs at annual intervals. Most water utilities in Australia are heavily engaged in water efficiency initiatives with rebate schemes for domestic water-efficient devices ubiquitous across the industry. Wide Bay Water Corporation (WBWC) also engages in these activities but is increasingly ...
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    Water utilities undertake long term planning for water source security, often with forecast cycles of 20 to 30 years. Whilst this planning is generally involved with investigations of source water abstraction security and the need to build dams or to increase the recharge rate of groundwater aquifers, planning for water efficiency gains occurs at annual intervals. Most water utilities in Australia are heavily engaged in water efficiency initiatives with rebate schemes for domestic water-efficient devices ubiquitous across the industry. Wide Bay Water Corporation (WBWC) also engages in these activities but is increasingly interested in the concept of Time of Use Tariffs (TOUT) to target high water users in order to reduce their demand on the system. In 2006, WBWC introduced smart metering technology across the city which captures hourly use data. Interrogation of this data has lead to the ability to identify water use patterns for every domestic and commercial water customer and to design specific interventions to encourage water efficiency, such as a TOUT for domestic customers. A TOUT has been developed that imposes a penalty on all individual consumption greater than 600L in any hourly interval of any day in the year. The tariff was designed to reduce both the annual maximum peak hour demand and annual maximum day consumption. The ability to reduce both of these infrastructure design parameters has the potential to deliver substantial savings in infrastructure planning and deployment. This paper details the design process of this tariff, examines the infrastructure savings potential derived by network modelling explores and the regulatory framework engagement hurdles to be overcome in order to implement such tariffs in the water industry.
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    Conference Title
    The Sixth IWA Specialist Conference on Efficient Use and Management of Water
    Publisher URI
    http://www.iwahq.org/q1/events/iwa-events/2011/the-6th-iwa-specialist-conference-on-efficient-use.html
    Subject
    Environmental Management
    Water Resources Engineering
    Publication URI
    http://hdl.handle.net/10072/40926
    Collection
    • Conference outputs

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