Stats window 03 Jun 2026 15:10 → 04 Jun 2026 15:10 AEST
03 Jun 2026 15:10 → 04 Jun 2026 15:10 AEST
Dispatch target (cleared) vs availability — 5‑minute intervals. TAS1 regional price (RRP) on right axis.
Estimated $ per interval using regional RRP and MLF effective on each day.
UNIT_SOLUTION (5‑minute intervals). Intervention intervals excluded.dispatch_price RRP matched by settlement time and NEM region (from generator registry).| Effective from | MLF |
|---|---|
| 2024-07-01 | 0.9977 |
| 2025-07-01 | 0.9986 |
| Capex total (greenfield) |
$87.72M
How this was derived Reference |
|---|---|
| Capex refurbishment |
—
|
| Capex / MW |
$2,193,000
How this was derived Reference |
| Capex / MWh storage |
—
|
| Fixed OPEX (annual) |
$694.7k
How this was derived Reference |
| Fixed OPEX / MW-yr |
$17,368
How this was derived Reference |
| Variable OPEX / MWh |
$16.10
How this was derived Reference |
| Fuel cost / GJ |
$12.00
How this was derived Reference |
| Heat rate GJ/MWh |
10.49
How this was derived Reference |
Confidence: medium · Status: ai estimated · Capex basis: estimated · AI checked 04 Jun 2026
Notes
No specific financial data found for Bell Bay Three at this time.
Bell Bay Three comprises the three Pratt & Whitney FT8 Twin Pac OCGT units at Tamar Valley Power Station; BBTHREE3 is one 40 MW DUID within the 3 x 40 MW FT8 group. Exact historical construction/acquisition cost for BBTHREE3 was not found. The capex value is a 2024 replacement-cost estimate using Aurecon/AEMO small aero-derivative OCGT EPC cost of AUD 2,193/kW multiplied by 40 MW; it is not the original 2000s nominal project cost. Hydro Tasmania states the Tamar Valley station was commissioned in 2009 and includes 178 MW of OCGT from a 58 MW Rolls Royce Trent and 3 x 40 MW Pratt & Whitney FT8 Twin Pac. AETV’s 2023-24 AER states TVPS has been operated by AETV since full operation as a gas-fired base-load station on 19 September 2009; Unit 103B was taken offline in 2017/18 and remains in long-term in situ storage, while Unit 103A was not available for generation during 2023/24 due to ongoing operational issues. Because the public sources report many values at station/technology level rather than DUID level, O&M, heat rate, efficiency, asset life and replacement capex are technology-default estimates for a small OCGT and should be reviewed against OEM/owner data if available. Emissions intensity is estimated from the HHV heat rate and a standard natural-gas combustion factor; no DUID-specific CO2 intensity was found in public AETV material.
Bell Bay Three / BBTHREE3 is one of the Pratt & Whitney FT8 OCGT units now reported within Tamar Valley Power Station. Exact unit-specific original construction cost, fixed O&M, VOM, heat rate and fuel price were not found publicly. Capex is an estimate: Alinta agreed in 2007 to buy the Bell Bay peaking plant site from Hydro Tasmania for AUD 75m, including gas pipeline capacity agreements; this has been allocated one-third to BBTHREE3 because Bell Bay Three comprised three 40 MW FT8 units. This is an acquisition/scope proxy, not a clean EPC construction cost. Default OCGT O&M, heat-rate, efficiency, life and emissions assumptions are taken from AEMO/GHD 2018 OCGT-without-CCS parameters, which are for a large frame OCGT new entrant rather than the smaller aero-derivative FT8, so confidence is medium-to-low for unit economics. Emissions intensity of 0.624 tCO2e/MWh is combustion-only, calculated as 11.75 GJ/MWh * 53.15 kgCO2e/GJ / 1000; including AEMO/GHD fugitive emissions of 3.9-13.5 kgCO2e/GJ would imply roughly 0.670-0.783 tCO2e/MWh. Hydro Tasmania's 2023-24 Annual Environmental Review reports FT8 unit 103B permanently in long-term in-situ storage and FT8 unit 103A not operational through the reporting period, indicating BBTHREE3 availability/derating issues requiring review.
Bell Bay Three BBTHREE3 is one of the three 40 MW Pratt & Whitney FT8 Twin Pac OCGT units at Tamar Valley Power Station/Bell Bay. Hydro Tasmania reports the station has 178 MW of OCGT comprising a 58 MW Rolls Royce Trent 60WLE and 3 x 40 MW Pratt & Whitney FT8 Twin Pac, with the Tamar Valley Power Station commissioned in 2009. Tasmanian Treasury RTI material states the three 40 MW FT8 gas turbines formed part of the old Bell Bay Power Station and were refurbished as part of the TVPS project. No generator-specific capex/refurbishment cost for BBTHREE3 was found; capex is therefore a 2024 default using Aurecon/AEMO small aero-derivative OCGT EPC cost of AUD 2,193/kW multiplied by 40 MW, excluding site-specific land/development and fuel connection costs. Fixed and variable O&M are also defaults from the same Aurecon/AEMO small GT assumptions, excluding fuel. Heat rate is generator-specific from AEMO heat-rate data for Bell Bay Three: static heat rate 12.04 GJ/MWh HHV as-generated. Efficiency is calculated as 3.6/12.04 = 29.9% HHV. Emissions intensity is estimated from AEMO heat rate times DCCEEW 2025 stationary natural gas pipeline combustion factor 51.53 kg CO2-e/GJ, giving 0.6204 tCO2-e/MWh scope 1. Asset life uses Aurecon/AEMO new-entrant OCGT economic design life of 25 years; this is a default assumption and not an indication of remaining life for the refurbished BBTHREE3 unit. Public closure information is inconsistent/limited: the AEMO generation information page publishes updated expected closure-year files, while third-party mirrors have shown stale expected closure dates; no confirmed closure of BBTHREE3 was found in the searched official sources.