Tamar Valley Power Station is a $230 million natural gas-fired power station located in Bell Bay in the Tamar Valley, Tasmania. It is owned by Hydro Tasmania, and is immediately adjacent to the decommissioned Bell Bay Power Station, which is also owned by Hydro Tasmania.[1][2]
| Tamar Valley Power Station | |
|---|---|
 | |
| Country |
|
| Location | Tamar Valley, Tasmania |
| Coordinates | 41°08′24″S 146°54′20″E / 41.14°S 146.9056°E |
| Status | Base load |
| Commission date | September 2009[1] |
| Owner | Hydro Tasmania |
| Thermal power station | |
| Primary fuel | Natural gas |
| Combined cycle? | Yes |
| Power generation | |
| Units operational | 5 |
| Nameplate capacity | 388 MW[1] |
The station's total nameplate capacity is 388 MW, and includes four peaking units totalling 178 MW, and one base-load combined cycle unit of 210 MW. The four peaking units are: three 40 MW (total 120 MW) pre-existing (from the Bell Bay Power Station) Pratt & Whitney FT8 Twin Pac gas turbine alternators (Units 101-103), and a single 58 MW Rolls-Royce Trent 60WLE gas turbine alternator (Unit 104) commissioned in May 2009. The base-load unit is a 210 MW Mitsubishi M701DA gas turbine operating in combined cycle mode (Unit 201) which completed commissioning in September 2009. The Mitsubishi's combined cycle capacity of 210 MW includes 140 MW generated directly by the M701 gas turbine, and a further 70 MW generated by the Mitsubishi steam turbine generator set.[3]
At the time of conception, the Tasmanian Government allowed Aurora Energy to enter into long term energy supply agreement with Alinta.[2][4] During 2008 the Tasmanian Government via Aurora Energy acquired the construction project from the then owner Babcock & Brown Power (who had earlier purchased Alinta Energy generation assets).[1][5] Aurora set up a fully owned subsidiary company "AETV Power" to complete and operate the power station assets.
On 1 June 2013 the State Government transferred the ownership of the power station from Aurora Energy to Hydro Tasmania, another state owned enterprise, and the predominant generator of electricity in the state.
Following its commissioning, low electricity demand, strong rainfall and substantial use of the Basslink interconnector with Victoria meant that the station generated only small volumes of electricity. In June 2014 Hydro Tasmania commenced the process of mothballing the combined cycle unit, and in January 2015 it sought the Tasmanian Government's approval to sell the unit.[6] In August 2015 Hydro Tasmania announced that the combined-cycle unit was not required for energy security and would be decommissioned and sold.[7] The open-cycle units would be retained for peaking duty. However, only a few months later in December, Hydro Tasmania hired 12 temporary workers at the plant, indicating that the combined-cycle unit may be used again to slow the rate at which Hydro Tasmania's dam storages were depleted.
On 21 December 2015, Basslink, the HVDC interconnector with Victoria, was disconnected due to a faulty interconnector. It was originally expected that Basslink would be repaired and returned to service by 19 March 2016;[8] however, the link was not restored until 13 June 2016.[9] A separate non-cable fault caused another failure of power flow on 22 June.[10] After almost 36 hours power flow was again restored in the evening of 23 June.[11]
Because of the 2016 Tasmanian energy crisis, Hydro Tasmania recommissioned Tamar Valley Power Station to help meet Tasmania's electricity needs.[12][13]
See also
editReferences
edit- ^ a b c d "Tamar Valley power station on track". ABC News Online. 2009. Retrieved 1 October 2009. [dead link]
- ^ a b "Tasmania allows Alinta power agreement". Melbourne: The Age. 26 October 2006. Retrieved 5 February 2009.
- ^ "AEMO Tasmanian Generators". 2010. Archived from the original on 17 October 2009. Retrieved 18 January 2010.
- ^ "Alinta signs $600m gas supply agreements". ABC News Online. 2007. Retrieved 5 February 2009.
- ^ "New acquisition improves energy security for Tamar Valley Power Station". Aurora Energy Online. 2009. Archived from the original on 24 May 2009. Retrieved 30 September 2009.
- ^ "Ministerial Statement on Energy Security". www.premier.tas.gov.au. Retrieved 9 March 2016.
- ^ "Changes to operation of Tamar Valley Power Station | Hydro Tasmania". www.hydro.com.au. Archived from the original on 9 March 2016. Retrieved 9 March 2016.
- ^ "Basslink interconnector update" (PDF). Baslink.com.au. Retrieved 8 March 2017.
- ^ "Electricity flow between Tasmania and Victoria restored". ABC News. Australian Broadcasting Corporation (ABC). 13 June 2016. Retrieved 29 July 2016.
- ^ "Basslink confirms fresh outage days after service resumes". ABC News. ABC-Australia. 22 June 2016. Retrieved 29 July 2016.
- ^ "Basslink running again after 'mechanical failure' caused outage". ABC News. (ABC-Australia). 23 June 2016. Retrieved 29 July 2016.
- ^ Richards, Blair (29 December 2015). "The Mercury". themercury.com.au. Retrieved 9 March 2016.
- ^ "More generators ordered after delays confirmed on Basslink undersea cable repair". ABC News. Retrieved 9 March 2016.