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Transcript of Powering Sydney¢â‚¬â„¢s Future - TransGrid ... 7 Powering...

  • Powering Sydney’s Future

    Workshop Summary – January 2017

  • 2 Powering Sydney’s Future Workshop Summary 2016

    Contents

    1. Powering Sydney’s Future ...................................................................................................................... 3

    2. Workshop summary ................................................................................................................................. 3

    3. Objectives.................................................................................................................................................. 3

    4. Presentations ............................................................................................................................................ 3

    5. Activities .................................................................................................................................................... 4

    6. Key themes and responses ..................................................................................................................... 5

    6.1 Table of key themes and responses ................................................................................................ 5

    7. Feedback and Recommendations .......................................................................................................... 9

  • 3 Powering Sydney’s Future Workshop Summary 2016

    1. Powering Sydney’s Future

    Powering Sydney’s Future aims to secure a safe, reliable and economical power supply for homes,

    businesses and other electricity users in the Inner Sydney area. TransGrid and Ausgrid are working together

    to find the best solution by considering the environment, community, cost and delivery timeframes to ensure

    the continued supply of power to this vital economic hub of Sydney.

    2. Workshop summary

    On Monday 28 November 2016, TransGrid and Ausgrid

    facilitated a stakeholder workshop for Powering Sydney’s

    Future at Mercure Sydney. The aim of the workshop was to

    re-engage and continue the conversation with stakeholders,

    some of whom were involved in Powering Sydney’s Future in

    2014, with updated information.

    In total, 92 stakeholders from government, energy suppliers

    and regulators, large power users, industry and others

    attended the workshop and participated in a range of

    workshop activities.

    Below are details of the workshop, including:

     Objectives

     Presentations

     Activities

     Key themes raised and responses

    3. Objectives

    The workshop was an opportunity to reintroduce the Powering Sydney’s Future project and provide updated

    information to stakeholders. It was also an opportunity for stakeholders to discuss ideas and explore the

    feasibility of potential network and non-network solutions.

    The objectives of the workshop were to:

     Inform stakeholders with new information about the context and drivers of the Powering Sydney’s Future project.

     Continue the conversation with stakeholders who were involved in 2014.  Seek initial views and discuss potential network and non-network solutions.

    4. Presentations

    Five presentations were given by senior TransGrid, Ausgrid and GHD representatives.

    1. Gerard Reiter, TransGrid’s Executive General Manager, Asset Management opened the workshop by highlighting the importance of the Powering Sydney’s Future project and the partnership between TransGrid and Ausgrid to find a reliable and efficient solution to support Sydney’s long-term and

  • 4 Powering Sydney’s Future Workshop Summary 2016

    growing power needs.

    2. Matthew Webb, Ausgrid’s Manager Network Risk and Planning explained Ausgrid’s drivers such as demand forecasting and ageing assets.

    3. Anthony Englund, TransGrid’s Group Manager, Investment Strategy and Solutions then continued the conversation with TransGrid’s drivers such as Cable 41 and reliability. Anthony also explained the Reliability Standards and Regulatory Investment Test - Transmission (RIT-T) process.

    4. Nalin Pahalawaththa, TransGrid’s Group Manager, Power System Analysis explained the criteria measured against for the different route selections.

    5. David Bones, GHD’s Service Group Manager – Power, Strategy and Economics discussed the possibility of non-network solutions such as batteries and standby generators.

    To watch these presentation or to access the powerpoint slides, visit www.transgrid.com.au/powering-sydney

    5. Activities

    Stakeholders were given an opportunity to raise their issues, concerns or comments about Powering

    Sydney’s Future through four activities implemented at the workshop.

     Activity 1 used an interactive real time poll to gauge

    stakeholder’s knowledge and understanding of the project,

    aim for attending the workshop and the key priority for Inner

    Sydney’s energy supply.

     Activity 2 invited stakeholders to identify three issues or

    concerns they would like addresses at the workshop.

     Activity 3 followed presentations 2 and 3 and asked for

    stakeholder to brainstorm three priorities in finding a

    solution to powering Sydney.

     Activity 4 followed presentation 4 and 5 and asked stakeholders to brainstorm three important

    factors, for them or their organisation, when considering solutions.

    In addition to the above activities, dedicated time was allocated to a discussion on non-network solutions.

    This was an opportunity for all stakeholders to ask speakers or voice their thoughts and opinions on possible

    non-network options. In particular, the discussion considered:

     Potential non-network ideas

     Challenges and barriers

     Incentives

  • 5 Powering Sydney’s Future Workshop Summary 2016

    6. Key themes and responses

    The following are responses to the key themes raised by stakeholders during the workshop.

    6.1 Table of key themes and responses

    Key theme Details Response

    Understanding the

    Powering Sydney’s Future project

     Overview of the project

     Accuracy of demand

    forecasting and details on the

    ‘trigger point’

     What research has been

    undertaken to maximise the life

    of new in ground cables?

     Has the integrity of the cables

    been tested for an end date?

     What is the value in deferring

    the project?

     Powering Sydney’s Future is a joint

    engagement initiative between

    Ausgrid and TransGrid to identify the

    best solution to meet the future

    energy needs in the Inner Sydney

    area.

    The solution may be a network or

    non-network solution, or a

    combination of both.

    TransGrid is currently seeking

    proposals for non-network solutions to

    solve the area’s energy needs or at

    least defer the need to implement a

    network solution.

    If a network solution is required, it

    would involve building a new

    underground cable between

    TransGrid’s Rookwood and

    Beaconsfield Substations.

     Consultant GHD has undertaken an

    independent audit of Ausgrid’s

    demand forecasts and published the

    results in the Ausgrid’s 2016 Inner

    Sydney Demand Forecast in October

    2016.

    The report intended to inform

    stakeholders about the peak demand

    forecasts, the performance of those

    forecasts and the measures

    implemented to improve forecast

    performance.

    It concluded Ausgrid’s Inner Sydney

    demand forecast provided a

    reasonable estimate of the potential

    future demand in the area and is

    appropriate for use in planning

    transmission network augmentations.

     Research in the following areas has

    been undertaken to ensure maximum

    longevity for an underground cable

    option:

    o New cable technology -

    not oil filled.

    o On-line condition

  • 6 Powering Sydney’s Future Workshop Summary 2016

    monitoring with a real

    time rating system

    o Consideration of new

    alternative and more

    appropriate bedding and

    backfill materials

    o Better monitoring and

    controls of cable

    installation practices

    o Experience gained from

    recent XLPE cable

    installations

     In regard to the integrity of the cable

    and its estimated end-of-life date, a

    section of TransGrid’s cable 41 has

    been removed from an area expected

    to be in one of the worst conditions

    along the cable route. Inspection and

    testing of the cable has been carried

    out with further analysis to be carried

    out during January 2017 to assess

    and determine its overall residual life.

     The annual deferral value has been

    estimated at $12.4 million and is

    based on deferring Stage 1 only. It is

    important to note this is an estimate

    only and may change as the project

    cost is refined or financing charges

    vary.

    Furthe