Channel Island Power Station

Country| Australia
Location| Channel Island, Northern Territory
Coordinates| 12°33′16″S 130°52′00″E﻿ / ﻿12.554503°S 130.8665437°E﻿ / -12.554503; 130.8665437
Status| Operational
Commission date| 1986
Owner(s)| Territory Generation
Operator(s)| Territory Generation
Thermal power station
Primary fuel| Natural gas
Secondary fuel| Diesel
Power generation
Units operational| 6
Units decommissioned| 1
Nameplate capacity| 279 MW
External links
Website| territorygeneration.com.au/home/our-power-stations/locations/channel-island-power-station/

[edit on Wikidata]

Channel Island Power Station is the largest power station in the Northern Territory of Australia. It is positioned on an island in the Middle Arm of Darwin Harbour, supplying electricity to the Darwin-Katherine Interconnected System.[1] It is currently owned and operated by Territory Generation. Most of the island surrounding the facility is protected from development as the Channel Island Conservation Reserve.

## History[edit]

Channel Island Power Station was built and commissioned in 1986 by the Power and Water Authority, a predecessor of PowerWater, replacing the Stokes Hill Power Station.[2] At the time of commissioning, Channel Island was the first combined cycle power plant in Australia, and the first to feature distributive digital control systems with screen-based controls.[3]

In 2008, it was supplemented by the nearby Weddell Power Station which became operational that year, however Channel Island still provided 48% of the Territory's total power generation, with an installed capacity of 232 MW in 2010. At that time, plant in use at Channel Island included 5 General Electric generators capable of running on either natural gas or diesel fuel in addition to a more modern 40MW GE LM6000 gas turbine generator installed by Leighton Contractors.[4] A steam turbine was also in place to generate electricity from waste heat produced by units C4 and C5.[5]

Two new Rolls-Royce Trent 60 gas turbines were commissioned to expand the capacity of the power station in 2011.[6] These two turbines can each generate 58MW of electricity and collectively increased the generation capacity on the Darwin-Katherine power system by 25%.[7]

Between 2011 and 2014, the power station's control systems were integrated with all three units at Weddell Power Station, allowing centralised control from Channel Island.[8] Ownership of both facilities transferred to Territory Generation when it was separated from PowerWater in 2014.

As of 2020, unit C3, an original 1986 General Electric Frame 6 type generator was undergoing decommissioning. This reduced the power station's capacity from 310 MW to 279 MW, however it still remains the main facility generating base load for the regional grid.[9]

## Renewable energy[edit]

In 2021 the Government of the Northern Territory awarded a tender for the construction of a 35 MVA battery storage power station to be built at Channel Island. At a cost of $45 million, the Darwin-Katherine Battery Energy Storage System will replace the decommissioned gas-fired unit and support the expansion renewable energy across the region such as by supporting the connection of rooftop solar panels to the grid.[10]

Also in 2021, Territory Generation ordered a trailer-mounted GE TM2500 aeroderivative gas turbine for Channel Island. Rated at 22 MW, this unit is capable of running on renewable hydrogen and is compatible with the Battery Energy Storage System currently being installed.[11] The remaining thermal units, C1 and 2, and C4 and 5 along with the waste heat turbine are expected to be decommissioned in 2026–27, with similar small hydrogen capable units the most likely replacement.[11][12]

## References[edit]

1. ^ "Channel Island Power Station". Territory Generation. Retrieved 29 July 2018.
2. ^ "Darwin's heritage power stations". PowerWater. Archived from the original on 29 July 2018. Retrieved 29 July 2018.
3. ^ Owen Peake. "Thermal Power Station Heritage in Australia". Trust Advocate. National Trust of Australia (Victoria). Retrieved 9 January 2022.
4. ^ "Channel Island Power Station General Augmentation". CPB Contractors. Retrieved 29 July 2018.
5. ^ "Power System Review: 2008-09" (PDF). Northern Territory Utilities Commission. March 2010. Retrieved 9 January 2022.
6. ^ "Rolls-Royce technology boosts electricity generation in Australia's Northern Territory". Rolls-Royce Holdings. 26 April 2012. Retrieved 30 July 2018.
7. ^ "Rolls-Royce Technology Boosts Electricity Generation in Australia's Northern Territory". Power Technology. Verdict Media. 25 April 2012. Retrieved 30 July 2018.
8. ^ "Weddell Power Station Controls Upgrade". Provecta Energy Solutions. Retrieved 9 January 2022.
9. ^ "2019-20 Annual Report" (PDF). Territory Generation. Retrieved 9 January 2022.
10. ^ Utility Magazine (20 December 2021). "NT Awards $45 million Darwin-Katherine battery tender".
11. ^ a b "Channel Island Power Station gets hydrogen-capable mobile aeroderivative gas turbine". Energy Source and Distribution. TMPC Creative Media. 14 October 2021. Retrieved 9 January 2022.
12. ^ "2020 NT Electricity Outlook Report" (PDF). Utilities Commission of the Northern Territory. Retrieved 9 January 2022.

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Energy in the Northern Territory

Active Power Stations|

* Berrimah
* Borroloola
* Channel Island
* Daly Waters
* Elliott
* Katherine
* Kings Canyon
* McArthur River
* Owen Springs
* Pine Creek
* Ron Goodin
* Tennant Creek
* Timber Creek
* Ti Tree
* Weddell
* Yulara

Former Power Stations|

* Stokes Hill
* Armidale Street
* Old Alice Springs
* Newcastle Waters

Companies|

* PowerWater
* Territory Generation

Regulators|

* Utilities Commission

Historical entities|

* Northern Territory Electricity Commission

List of power stations in the Northern Territory
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