Tell me about
Unison Group
powering communities for 100 years.
We are Unison
The Unison Group consists of specialist companies delivering world-class electricity solutions.
Hawke's Bay Power Consumers' Trust
Unison is consumer-owned
Unison is wholly owned by the Hawke's Bay Power Consumers' Trust. The Trust holds shares on behalf of Hawke's Bay power consumers connected to Unison's network. This ensures the Company is focused on delivering economic benefits to our customers and community shareholders.
Reports & publications
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Statement of Corporate Intent
Unison is a primary provider of infrastructure services for energy distribution to Hawke's Bay, Taupō and Rotorua. The quality and efficiency of these services has a significant impact on the economic and social wellbeing of these communities.
Pricing information
Unison is required to set and publish tariffs and related methodology annually within the Commerce Commission’s ruling on pricing.
1912
In the very early days of electricity generation, the generation and supply of power was managed by Councils or Municipal departments. Our home town of Hastings first enjoyed the benefits of an electricity network in 1912.
1918
The Electric Power Boards Act 1918 gave Power Boards the opportunity to produce, reticulate and sell power to those areas not supplied through the local government.
1924
Following the Electric Power Boards Act 1918, Power Boards could produce, reticulate and sell power to those areas not supplied through the local government. So, this led to the constitution of the Hawke’s Bay Electric Power Board (HBEPB) on 19 June 1924. Following that, on 27 September 1924 the first meeting of the HBEPB was held.
1950
With all power for the Hawke's Bay region coming from a single point of supply at Redclyffe, by the early 1950s growth in demand for electricity required the Government to build a second point of 20,000kVA supply at Fernhill to meet the increasing electricity needs of customers.
1960
Increasing demand for underground installations in residential areas meant the focus shifted from construction of new connections to the undergrounding of existing overhead supplies.
1991
The 1990s was the period of most significant organisational change for the Board. The first change came in November 1991 when the Board finally purchased the electricity business, Bay City Power, operated by the Napier City Council.
1992
The Energy Companies Act 1992 allowed for the corporatisation of the Electricity Boards, changing the ownership to one of shareholdings, with the option of vesting the shares into Trust ownership a most popular choice around New Zealand.
1993
For the Hawke's Bay Electric Power Board, the Energy Act resulted in the formation of Hawke’s Bay Power Distribution Limited and its subsidiary company, Hawke’s Bay Power Limited, both trading as Hawke’s Bay Power on 20 May 1993. All shares were vested in the Hawke’s Bay Power Consumers’ Trust ensuring continued “consumer ownership” of the Company and its distribution network.
1998
This Act required that one company could no longer both distribute and retail electricity, and so on 30 September 1998, the retail business of the Company was sold to Contact Energy Ltd, and distribution company changed to Hawke’s Bay Network Limited in January 1999.
2002
In 2002, Hawke’s Bay Network Limited acquired the Taupō and Rotorua electricity distribution assets of United Networks Limited and Vector Limited.
2003
Unison Networks Limited (trading as Unison) came into being on 17 April 2003, when the Company changed its name.
2009
In 2009, Unison branched out into fibre, with the establishment of subsidiary Unison Fibre Limited. In the same year Unison also purchased ETEL - New Zealand’s largest transformer manufacturing company.
2010
The Company underwent a restructure in 2010, separating out its electrical, fibre, vegetation and civil contracting services under a new subsidiary, Unison Contracting Services Limited (UCSL).
2016
Unison launched the first of its public fast-charging stations for electric vehicles (EVs) in the Hastings CBD in 2016, with a further three installed across Napier, Taupō and Rotorua following that year.
2019
UCSL entered into an agreement with Aurora Energy to help deliver their network programme in Dunedin in 2019. This agreement was extended in 2022 through to 2024. That same year Unison acquired RPS Switchgear, an electrical switchgear business based in Wellington.
2022
The first of its kind in New Zealand, Windsor Substation was operational from 2022 and was named the winner of the Low Carbon Future Award at the NZ Energy Excellence Awards. Unison also acquired high-voltage electrical contracting industry leader PBA Limited that year.
2024
On 19 June 2024, Unison celebrated 100 years of powering communities since its founding as the Hawke's Bay Electric Power Board.
Quick Facts
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Supplies electricity to Hawke’s Bay, Taupō and Rotorua
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Over 9,300km of power lines
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Fifth largest electricity distributor in New Zealand
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We've installed six electric vehicle chargers across our network
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Supplies over 114,000 customers
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$700m of electricity assets
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Over 500 employees
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Established in 1924, as the Hawke’s Bay Electric Power Board
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Powering its communities for 100 years
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More than $88 million distributed to the beneficiaries of the Hawke's Bay Power Consumers' Trust