Cethana Pumped Hydro Option

Hydro · Hydro-Electric Corporation · Storage - Pumped hydro

Dispatch stats Financials
Development AEMO: Publicly Announced Hydro - Water NEM data · 24 hours
750/15,000 MW
Researched capacity / storage
Est. SRMC
$1.31/MWh
Key information
Capacity (AI)
750 MW / 15,000 MWh

AEMO registration spreadsheet entry for Cethana Pumped Hydro Option lists 750 MW and 15,000 MWh; no better primary-source capacity figure was found in the provided results.

AEMO status Publicly Announced
Project status Development (AI)

Hydro Tasmania / Hydro-Electric Corporation project materials indicate Cethana Pumped Hydro Option is a proposed pumped hydro development, not yet under construction.

Coordinates —

DUID —
Owner Hydro-Electric Corporation
Commissioned —
Expected closure —
Closure date —
Technology Storage - Pumped hydro
Fuel Hydro - Water
Turbine OEM —
Turbine type / model —
Equipment confidence low
Stats window
13 Jun 2026 09:20 → 14 Jun 2026 09:20 AEST

Dispatch & revenue

13 Jun 2026 09:20 → 14 Jun 2026 09:20 AEST

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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
Pumped hydro
Capacity
750 MW / 15,000 MWh
Revenue (× MLF) (stats)
See dispatch stats link above
Est. SRMC
$1.31/MWh
Capex total (greenfield)
$2,663.93M

Shown in table
$2,663.93M (2026 real AUD)

Reported / source value
$2,600.00M (2025 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).

How this was derived
Project-specific reported cost from the owner/developer fact sheet.

Reference
Fact Sheet: A new era of hydropower at Cethana (high confidence)
Source recorded 06 Jun 2026
Capex refurbishment
—
Capex / MWh storage derived
$177,596

Shown in table
$177.6k (2026 real AUD)

Reported / source value
$173.3k (2025 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fixed OPEX (annual)
—
Fixed OPEX / MW-yr default
$45,000

Shown in table
$45.0k (2026 real AUD)
Variable OPEX / MWh
$1.31

Shown in table
$1.31 (2026 real AUD)

Reported / source value
$1.20 (2023 nominal)
Adjusted to 2026 real AUD using Australian CPI (All Groups).
Fuel cost / GJ
—
Heat rate GJ/MWh
—

Confidence: high · Status: ai estimated · Capex basis: reported · AI checked 06 Jun 2026

Notes
Hydro Tasmania's July 2025 fact sheet states the estimated cost of the Cethana Pumped Hydro Project is $2.6 billion (CY2023 real dollars). For this extraction, capex_total_aud is recorded as nominal/source-year reported value in 2025 as the latest project-specific published estimate located; the fact sheet also notes this is based on more detailed planning and design work and is higher than the original 2020 estimate. No verified plant-specific fixed O&M figure was found, so O&M remains unset except for the provided fallback variable O&M default.

Sources