Electricity Asset Management Plan 2019-2029
194
Vector Limited://
OVERHEAD IMPROVEMENT PROGRAMME
NEEDS STATEMENT Vector has a deed in place with its major shareholder Entrust, to provide Energy Solutions Programme Investment. This programme is focused on improved energy efficiency and visual amenity around Vector’s assets. Projects have largely focused on undergrounding of overhead lines which reduces the exposure of assets to environmental risks such as vegetation, third party damage and lightning. Other projects undertaken under the deed with Entrust have included: (i) Sustainable substations: where solar panels and battery packs have been installed in a number of zone substation to displace or reduce energy consumption and dependence on the grid at a number of our zone substations; (ii) Energy efficiency community programmes: where battery packs have been installed in the community to reduce their monthly power bills. Energy audits have been conducted at the residential homes and these installations have resulted in energy efficiencies.
The Entrust deed requires Vector to invest an average of $10.5m annually on these energy solutions. This ties in with Vector’s commitment to improving the environmental impact of our assets.
TARGETED OUTCOMES
CUSTOMER EXPERIENCE
SAFETY
RELIABILITY
RESILIENCE
OPERATIONAL EFFICIENCY
CYBER SECURITY AND PRIVACY
OPTIONS CONSIDERED Options to address the need identified above have been assessed and are summarised in the following table.
DESCRIPTION
DISCUSSION OF OPTION
ESTIMATED COST (NPV IF APPLICABLE)
STATUS
Option 1: Do nothing
Do nothing is not an option as this is a requirement of Vector’s deed with Entrust and an obligatory spend Notwithstanding that this programme of works is a requirement of Vector’s deed with Entrust and is thus obligatory, the programme will reduce the risk of SAIFI and SAIDI because the undergrounded portions will be less prone to the effect of lightning, vegetation or the impact of third party events on OH line poles.
Rejected
Option 2: Undertake a programme of works to
$105.00M Selected
underground overhead lines; Undertake community based new technology projects
PROPOSED INVESTMENT SUMMARY ($MILLION NOMINAL)
DESCRIPTION
FY20
FY21
FY22
FY23
FY24
FY25
FY26
FY27
FY28
FY29 TOTAL
Auckland various overhead to underground improvements
10.50
10.50
10.50
10.50
10.50
10.50
10.50
10.50
10.50
10.50
105.00
Total CAPEX
10.50
10.50
10.50
10.50
10.50
10.50
10.50
10.50
10.50
10.50
105.00
LIGHT DETECTION AND RANGING (LIDAR) TO DETECT LOW LINES AND VEGETATION
NEEDS STATEMENT Low lines and vegetation have proved to be major contributors to faults and thus major contributors to SAIDI and SAIFI. This was highlighted during the recent storms in Auckland and surrounding areas. The vegetation problem is greatly magnified during high winds as was experienced especially during recent storm events. Traditionally overhead lines would have been surveyed from the ground but this method is expensive and time consuming and will not suffice for the large volumes of data that are needed to plan and prioritise the programme of work to rectify low lines and control vegetation.
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