John Butters (JBUTTERS)

Hydro · Hydro-Electric Corporation · Hydro - Dam

Dispatch stats Financials
Operational AEMO: In Service TAS1 Hydro - Water NEM data · 24 hours
144 MW
Registered nameplate capacity
24 hours revenue
$16.0k
Capacity factor
14.9%
Revenue / MWh
$31.03
Est. SRMC
$0.00/MWh

Energy flow

Dispatch target (cleared) vs availability — 5‑minute intervals. TAS1 regional price (RRP) on right axis.

Key information
Capacity
144 MW

AEMO status In Service
Project status Operational (AI)

GEO (globalenergyobservatory.org) states the John Butters Hydroelectric Power Station first unit was commissioned in 1992 and is operating/operated by Hydro Tasmania.

Region TAS1
Coordinates -42.15480, 145.53440 (AI)

GEO (globalenergyobservatory.org) lists John Butters Hydroelectric Power Station at latitude -42.1548, longitude 145.5344.

MLF 0.9386
DUID JBUTTERS
Owner Hydro-Electric Corporation
Commissioned —
Expected closure 2100
Closure date —
Technology Hydro - Dam
Fuel Hydro - Water
Turbine OEM Hydro Tasmania
Turbine type / model Conventional hydroelectric turbine-generator set
Equipment confidence low
Stats window
13 Jun 2026 00:50 → 14 Jun 2026 00:50 AEST

Dispatch & revenue

13 Jun 2026 00:50 → 14 Jun 2026 00:50 AEST

Energy revenue (× MLF)
$16.0k
FCAS revenue (× MLF)
$1.4k
FCAS volume
332.7 MWh
Dispatched
516.0 MWh
Available
324.0 MWh
Curtailed
66.0 MWh
Curtailment
20.4%
of available
MLF used
0.9386
end of period

Revenue (× MLF)

Estimated $ per interval — energy (RRP) and FCAS (regional FCAS prices), both × MLF.

Methodology & assumptions

  • Dispatch & availability — AEMO Next Day Dispatch UNIT_SOLUTION (5‑minute intervals). Intervention intervals excluded.
  • Regional price — dispatch_price RRP matched by settlement time and NEM region (from generator registry).
  • Energy revenue (× MLF) — cleared MW × (5/60 h) × RRP × MLF.
  • FCAS revenue & volume — cleared FCAS MW from DISPATCHLOAD (raise/lower 6s, 60s, 5min, reg) × (5/60 h) × regional FCAS price × MLF. Volume is total FCAS enablement MWh across services.
  • Curtailment — estimated economic curtailment when availability exceeds dispatch target: max(0, availability − cleared) × (5/60) MWh.
  • Not settlement — estimates only. AEMO settlement applies DLF, rebids, constraints, and other factors not modelled here.
MLF history (AEMO daily)
Effective fromMLF
2024-07-01 0.9245
2025-07-01 0.9386

Financial overview

2026 real AUD. Monetary values are CPI-adjusted to 2026 real Australian dollars. Greenfield capex uses AEMO benchmarks when plant-specific cost is unknown.
Type
Hydro
Capacity
144 MW
Revenue (× MLF) (stats)
See dispatch stats link above
Est. SRMC
$0.00/MWh
Capex total (greenfield)
$607.59M

Shown in table
$607.59M (2026 real AUD)

Reported / source value
$576.00M (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Capex refurbishment
$4.10M

Shown in table
$4.10M (2026 real AUD)

Reported / source value
$3.30M (2021 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).

How this was derived
This is an upgrade/refurbishment item, not greenfield capex.

Reference
Powering the clean - Hydro Tasmania Annual Report 2021 (medium confidence)
Source recorded 08 Jun 2026
Capex / MW derived
$4,219,409

Shown in table
$4.22M (2026 real AUD)

Reported / source value
$4.00M (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fixed OPEX (annual)
—
Fixed OPEX / MW-yr default
$40,000

Shown in table
$40.0k (2026 real AUD)
Variable OPEX / MWh
$0.00

Shown in table
$0.00 (2026 real AUD)

Reported / source value
$0.00 (2024 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).

How this was derived
No explicit variable O&M figure for conventional hydro was located in the searched excerpts; zero is used as a fallback placeholder consistent with hydro water not being a fuel input.

Reference
2024 Energy Technology Cost and Technical Parameter Review (low confidence)
Source recorded 08 Jun 2026
Fuel cost / GJ
—
Heat rate GJ/MWh
—

Confidence: medium · Status: ai estimated · Capex basis: default · AI checked 08 Jun 2026

Notes
Hydro Tasmania confirms John Butters Power Station was commissioned in 1992 and has 145 MW capacity; the user-provided 144 MW is close to this official figure. No plant-specific original greenfield construction cost was found in official or high-quality sources, so capex_total_aud remains null. A Hydro Tasmania annual report notes a $3.3 million project to replace original excitation, governor and protection systems on Reece Unit 1 and John Butters, which is treated here as a refurbishment/upgrade rather than greenfield capex.

Sources