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Waipā Networks

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Waipā Networks
IndustryElectricity distribution
Headquarters
Te Awamutu
,
New Zealand
Key people
Sean Horgan, CEO
OwnerWaipā Energy Trust
Websitewaipanetworks.co.nz

Waipā Networks Limited is a New Zealand electricity distribution company, serving Cambridge, Te Awamutu and areas extending to Kawhia, Hauturu, Pukeatua, French Pass and Paterangi. Waipā has about 30,000 connections and is 100% owned by the Waipā Energy Trust.[1]

History

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Waipā Networks was formed in 1998 from Waipā Power, which began in 1993 with the merger of Te Awamutu and Cambridge Electric Power Boards.[1]

The Boards were set up under the Electric-power Boards Act 1918,[2] after the Public Works Department bought the 6,300 kW (8,400 hp) Horahora power station on 1 November 1919 for £212,500.[3] Hamilton Chamber of Commerce held a conference to create a Hydro Electric Power Board for the Waikato,[4] on 23 June 1919, but that was rejected and it was agreed to form local boards instead.[5]

Cambridge Electric Power Board vehicle and staff about 1920

Cambridge Electric Power Board

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Cambridge Power Board initially covered about 100 sq mi (260 km2),[3] with 200 hp (150 kW) allocated to the Board.[6]

A provisional committee to form a Board held its first meeting on 1 October 1919.[7] The first Board was elected on 11 February 1920.[8] The first power in the Waikato from Horahora was switched on at Leamington town hall on 28 April 1921,[9] but it took another year to turn on the street lights in Cambridge,[10] as all the other local Boards had taken on staff and put in orders earlier.[11] A 2-storey office opened on Alpha Street in October 1925.[12] The building was renovated in 1992.[13]

Te Awamutu Electric Power Board

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Te Awamutu Power Board was the first in the country to be set up, its first meeting being on 10 February 1920.[14] It initially covered about 300 sq mi (780 km2), including Kihikihi, Te Awamutu, Pirongia, Te Rore, and Ōhaupō,[3] with 600 hp (450 kW) allocated to the Board.[6]

No election was held for the first Board, as a campaign had been run to have only one candidate for each area represented[15] and the consensus allowed a 1920 poll, for a £120,000 loan, to be carried without opposition. In Te Awamutu 81 street lights[16] were lit up on 26 August 1921.[17] Kihikihi received power on 6 September,[18] Pirongia on 30 December[19] and Ōhaupō on 15 February 1922.[20] The Board met in several locations,[21] until their concrete office block at 486-488 Alexandra Street[22] was completed in December 1926.[23]

Network

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The Waipa Networks distribution network consists of approximately 2,300 km of lines, supplying approximately 28,000 customers. Electricity is supplied from the national grid via grid exit points (GXPs) at Transpower's Cambridge and Te Awamutu substation. Waipa Networks owns a 36 km (22 mi), 110,000-volt transmission line linking Transpower's Te Awamutu and Hangatiki substations, which is operated by Transpower as part of the national grid. The line was commissioned in 2016 to provide a second supply for Te Awamutu, which previously experienced day-long outages every two years while maintenance was carried out on the transmission line from Karapiro.[24]

As of 2024, Waipa Networks doesn't have a subtransmission network; the two GXPs directly feed the 11,000-volt distribution network. 3,672 distribution transformers step the 11,000 volts down to 230/400 volts (phase-to-neutral/phase-to-phase) to supply consumers.[25]

Due to high growth in the Cambridge area and constrained supply at the Cambridge GXP, Transpower and Waipa Networks are building a 220/33 kV substation and grid exit point at Hautapu. The substation will be located next to the Waikato Expressway where Transpower's existing 220,000-volt lines cross it. The grid exit point will initially feed a single co-sited 33/11 kV zone substation, which will supply the distribution network in the rural area west of Cambridge areas and taking load off Cambridge GXP. In future, a 33 kV subtransmission network will expand from Hautapu GXP to feed additional 33/11 kV zone substations around Cambridge. The substations are expected to be completed in December 2024.[26]

Waipā Networks statistics as at 31 March 2022 -[25]

Parameter Value
Line length 2,292 km (1,424 mi)
Distribution and LV overhead lines 1,736 km (1,079 mi)
Distribution and LV underground cables 491 km (305 mi)
Subtransmission lines and cables 36 km (22 mi)
Poles 22,505
Customer connections 28,033
System maximum demand 86 MW
System energy delivered 420 GWh
SAIDI (average outage duration) 340 min
SAIFI (average outage frequency) 2.37 p.a.

References

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  1. ^ a b "About us". Waipa Networks. 2018. Retrieved 11 April 2024.
  2. ^ "Electric-power Boards Act 1918 (9 GEO V 1918 No 5)". www.nzlii.org. Retrieved 12 April 2024.
  3. ^ a b c "Public Works Statement. By the Hon. J. G. Coates, Minister of Public Works". paperspast.natlib.govt.nz. 1920. Retrieved 12 April 2024.
  4. ^ "Local and general. Waikato Times". paperspast.natlib.govt.nz. 20 May 1919. Retrieved 12 April 2024.
  5. ^ "Electric power board. Waipa Post". paperspast.natlib.govt.nz. 24 June 1919. Retrieved 12 April 2024.
  6. ^ a b "Public Works Statement. By the Hon. J. G. Coates, Minister of Public Works". paperspast.natlib.govt.nz. 1920. Retrieved 12 April 2024.
  7. ^ "Provisional power board. Waikato Independent". paperspast.natlib.govt.nz. 2 October 1919. Retrieved 12 April 2024.
  8. ^ "Power board election. Waikato Independent". paperspast.natlib.govt.nz. 12 February 1920. Retrieved 12 April 2024.
  9. ^ "Electric light. Waikato Independent". paperspast.natlib.govt.nz. 30 April 1921. Retrieved 12 April 2024.
  10. ^ "Advance Cambridge. Waikato Independent". paperspast.natlib.govt.nz. 4 April 1922. Retrieved 12 April 2024.
  11. ^ "Electrical progress. Waikato Independent". paperspast.natlib.govt.nz. 1 December 1921. Retrieved 12 April 2024.
  12. ^ "New buildings. Waikato Independent". paperspast.natlib.govt.nz. 15 October 1925. Retrieved 12 April 2024.
  13. ^ Banks, Amy (12 May 2017). "B List Historic Buildings". Cambridge Museum. Retrieved 12 April 2024.
  14. ^ "Local and general. Northern Advocate". paperspast.natlib.govt.nz. 2 February 1920. Retrieved 12 April 2024.
  15. ^ "Electric power board. Waipa Post". paperspast.natlib.govt.nz. 29 January 1920. Retrieved 12 April 2024.
  16. ^ "Electric Power. Waipa Post". paperspast.natlib.govt.nz. 13 December 1924. Retrieved 12 April 2024.
  17. ^ "A brilliant and successful function. Waipa Post". paperspast.natlib.govt.nz. 27 August 1921. Retrieved 12 April 2024.
  18. ^ "Kihikihi's electric light. Waipa Post". paperspast.natlib.govt.nz. 8 September 1921. Retrieved 12 April 2024.
  19. ^ "Pirongia en fete. Waipa Post". paperspast.natlib.govt.nz. 31 December 1921. Retrieved 12 April 2024.
  20. ^ "Ohaupo en fete. Waipa Post". paperspast.natlib.govt.nz. 16 February 1922. Retrieved 12 April 2024.
  21. ^ "In new premises. Waipa Post". paperspast.natlib.govt.nz. 18 December 1926. Retrieved 12 April 2024.
  22. ^ "488 Alexandra Street". Google Maps. November 2019. Retrieved 12 April 2024.
  23. ^ "Power board offices. Waipa Post". paperspast.natlib.govt.nz. 9 December 1926. Retrieved 12 April 2024.
  24. ^ Kerr, Florence (30 May 2014). "Proposed $20m backup line will end blackouts for Te Awamutu". Waikato Times.
  25. ^ a b "Performance summaries for electricity distributors - Year to 31 March 2022 - Waipā Networks" (PDF). Commerce Commission. Retrieved 12 April 2024.
  26. ^ "Site blessing for new Hautapu substation". NZ Herald. 20 September 2023. Retrieved 14 April 2024.
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