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Ashford’s Integrated Alternatives

Ashford’s Integrated Alternatives. The Scale & Value of Uniting Utilities Dr. Sarah Ward University of Exeter & Dr. Sandip Deshmukh University of Surrey. Ashford’s Integrated Alternatives. Introduction. What do we mean by Uniting Utilities? Integration of services by :

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Ashford’s Integrated Alternatives

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  1. Ashford’s Integrated Alternatives The Scale & Value of Uniting Utilities Dr. Sarah Ward University of Exeter & Dr. Sandip Deshmukh University of Surrey

  2. Ashford’s Integrated Alternatives Introduction • What do we mean by Uniting Utilities? • Integration of services by: • technology (complementary options) • delivery (innovative business models) • administration (required skills) • Opportunities for Uniting Utilities in Ashford • Scale of development • Technical feasibility • Valuing attributes of integrated systems

  3. Ashford’s Integrated Alternatives Technology Choices Water-Energy Integration (WEI) Options? WEI Study/Strategy? Water Supply Options Ashford Integrated Water Management Study Energy Supply Options Sustainable Energy Feasibility Study So far, choices have been made individually without investigating integration avenues…

  4. Ashford’s Integrated Alternatives Options for Uniting Utilities in Ashford Scales investigated:  Sub-household (microcomponents)  Household (PV & RWH)  Semi-centralised (wastewater CHP) Sub-household Scale: Microcomponents • 25% of domestic energy use is associated with hot water provision • High performance water efficient appliances may use more energy • Trade-off between water and energy efficiency

  5. Ashford’s Integrated Alternatives Household Scale: PV and RWH • Dwelling-specific PV & RWH potential estimated • PV could meet 42 to 78% of domestic electricity requirement for all dwelling types in Ashford • Based on present FIT income calculations, the payback period for these systems could be 9 to 10 years and may reduce further due to escalation in fuel prices • RWH could meet 26% of the non-potable demand, but at huge expense – no FIT-equivalent incentive for decentralised water supply technologies • PV could meet energy requirements of RWH system

  6. Ashford’s Integrated Alternatives Semi-centralised Scale: Wastewater CHP • UWOT? is used to estimate wastewater generation for stages of Chilmington Green’s delivery • Anaerobic digestion of wastewater sludge in CHP could meet 1.2% and 0.44% of annual domestic electricity and heat demand • Highlights the need for supplementing with decentralised options (such as waste to energy or PV) • Use of domestic solid waste to energy generation option would result in meeting 15-20% of annual electricity and heat demand • If used only for meeting heat demand, planned development would need to have provision for deploying additional Ground Source Heat Pumps or Gas Boilers

  7. Ashford’s Integrated Alternatives • So, uniting utilities is feasible from a technical perspective, however: Water Flows & Responsibilities • Water/sewerage undertakers may not interact • Strict regulation limits non-standard approaches • Customer cannot choose • Energy Flows & Responsibilities • Responsibilities are managed separately • Energy supplier could be a generator or infrastructure provider • Customer can choose or become an energy supplier

  8. Ashford’s Integrated Alternatives PESTER Analysis – factors hindering technical integration Planning Phase • Interpretations of the term ‘integrated’ • Timing • Knowledge • Conflicts of interest • Design Phase • Risk • Scale • Procedure/Practice • Delivery phase • Scepticism • End-user Consultation

  9. Ashford’s Integrated Alternatives What attributes make uniting utilities a valuable option? • Help achieve environmental obligations • Provide efficiency savings/economies of scale • Effective resource use/reuse • Use waste products as resources • Reduce waste exports from area What attributes decrease its value? • Technical feasibility Vs Economic viability • Accepted within the community? • Complex role/interactions between stakeholders • Unfamiliar delivery mechanisms • New skills/services required

  10. Ashford’s Integrated Alternatives Conclusions and Recommendations • Conclusions: • Utility services need to be investigated individually, then in conjunction to identify avenues for integration • There are trade-offs/supplementary measures required at different scales • ….the major challenge: • Achieving value through uniting utilities and valuing the attributes of integrated systems in the planning phase • Recommendations: • Integration of utilities needs to be valued at the pre-planning and planning stages • Innovative integrated utility options need to be demonstrated to develop confidence in planners and developers • Inter and intra-utility partnership needs to be encouraged to facilitate integration • Incentives and new operational models are required at the regulatory level

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