Other Generators · AGL Barker Inlet Pty Ltd · Reciprocating Engine - Spark ignition
Dispatch target (cleared) vs availability — 5‑minute intervals. SA1 regional price (RRP) on right axis.
03 Jun 2026 18:30 → 04 Jun 2026 18:30 AEST
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 | 1.0001 |
| 2025-07-01 | 0.9996 |
| Capex total (greenfield) |
$295.00M
Shown in table How this was derived Reference |
|---|---|
| Capex refurbishment |
—
|
| Capex / MW derived |
$1,404,762
Shown in table How this was derived Reference |
| Fixed OPEX (annual) |
$7.56M
Shown in table How this was derived Reference |
| Fixed OPEX / MW-yr |
$36,000
Shown in table How this was derived Reference |
| Variable OPEX / MWh |
$9.00
Shown in table How this was derived Reference |
| Fuel cost / GJ |
$13.58
Shown in table How this was derived Reference |
| Heat rate GJ/MWh |
8.79
Shown in table How this was derived Reference |
Confidence: medium · Status: ai estimated · Capex basis: reported · AI checked 04 Jun 2026
Notes
Reported capex is AGL's nominal $295 million investment announced in June 2017 and reiterated at construction commencement in February 2018 for a 210 MW, 12-engine Barker Inlet Power Station. AGL's current site says construction commenced in early 2018 and the plant was commissioned in late 2019; South Australian government material states BIPS was commissioned on 4 November 2019, while the provided online date is 2020-01-01. Fixed O&M, variable O&M, heat rate, efficiency, emissions factor and asset life are not publicly disclosed by AGL at generator level; values used are AEMO/GHD defaults for a new-entrant 12 x Wärtsilä reciprocating gas engine plant and should be reviewed if confidential AGL bid/asset data is available. Emissions intensity is calculated as 8.85 GJ/MWh times 53.53 kg CO2e/GJ combustion emissions = 0.474 tCO2e/MWh, excluding upstream fugitive emissions; including GHD's fugitive range of 3.9-13.5 kg CO2e/GJ would imply about 0.508-0.593 tCO2e/MWh. AGL/AECOM 2025 planning material states existing BIPS 1 is fully operational and that AGL is progressing a BIPS 2 variation, with development cost about $500 million and output up to 280 MW; this is expansion/development context, not a closure or refurbishment of BIPS 1. No major refurbishment or closure date for BIPS 1 was found in public sources.
Capex is reported nominal AGL project cost for a 210 MW reciprocating-engine gas plant announced/developed in 2017 and under construction in 2018. Capex per MW is calculated as AUD 295m / 210 MW. O&M values are not Barker Inlet actuals; they use AEMO/GHD 2025 bottom-up estimates for a NEM-connected 210 MW dual-fuel reciprocating engine scenario (12 x Wärtsilä 18V50DF), which closely matches Barker Inlet. Aurecon’s 2024 technology review gives a lower fixed O&M assumption of AUD 29,383/MW-year and variable O&M of AUD 8.51/MWh for a similar 209.1 MW net hypothetical project; the GHD 2025 estimate was selected as the profile value because it is a newer AEMO-commissioned O&M review for existing NEM-connected gas technologies. Heat rate and efficiency use Aurecon’s net HHV maximum-load values for the same 12 x 18V50DF-style reciprocating-engine configuration; Wärtsilä’s OEM engine data shows a lower engine-only 50 Hz gas heat rate of 7,285 kJ/kWh and 49.4% electrical efficiency. Emissions intensity is estimated, not directly reported, as 8.79 GJ/MWh HHV net multiplied by the Australian NGA 2024 scope 1 natural gas pipeline factor of 51.53 kg CO2-e/GJ = 0.453 tCO2-e/MWh. No announced closure date was found for Barker Inlet; AGL’s Torrens Island material instead discusses redevelopment into the Torrens Energy Hub and closure/decommissioning of older Torrens A/B assets. AGL Annual Report 2025 notes non-routine maintenance at Barker Inlet in FY25 but does not disclose generator-specific cost.