Western Australian environmental regulators have launched a formal inquiry into recurring industrial methane plumes detected above Chevron’s flagship Gorgon liquefied natural gas facility off the north-west coast, authorities confirmed on Thursday.
The decision by the Department of Water and Environmental Regulation (DWER) follows several days of administrative ambiguity, during which state officials offered conflicting statements regarding whether the recurring discharges warranted formal regulatory scrutiny. ABC News Australia reported that the environmental watchdog has now initiated compliance inquiries to determine whether the US fossil fuel giant breached the stringent operating conditions attached to its Barrow Island licences.
Satellite Surveillance Exposes Offshore Plumes
The regulatory intervention comes amid escalating scrutiny of the Pilbara LNG sector through advanced satellite monitoring technologies. Independent orbital observations and environmental analytics firms have repeatedly identified massive invisible plumes of unburnt methane billowing from Gorgon’s offshore processing infrastructure.
Methane, the primary constituent of natural gas, carries a global warming potential more than 80 times greater than carbon dioxide across its initial two decades in the atmosphere. While fossil fuel producers have traditionally maintained that emissions are limited to intermittent flaring and planned maintenance venting, satellite mapping has increasingly exposed unaccounted-for fugitive leaks across global gas hubs. Under Western Australian environmental protection laws, industrial operators face stringent reporting obligations and strict caps on unauthorised atmospheric discharges.
Geosequestration Woes Compound Gorgon Deficits
The newly confirmed investigation adds another layer of complexity to the troubled environmental balance sheet of Gorgon, a massive joint venture that cost an estimated $75 billion to construct. Located on the class-A nature reserve of Barrow Island, the facility operates subject to some of the nation's most intricate ecological licence stipulations.
Central to the project's original environmental approvals was a flagship commitment to operate the world’s largest commercial carbon capture and storage (CCS) facility. Under state agreements, Chevron and its joint venture partners—including ExxonMobil and Shell—were required to capture and inject reservoir carbon deep underground to mitigate the site's vast footprint. However, the multi-billion-dollar CCS system has been beset by persistent mechanical failures, sand blockages, and operational delays since gas production commenced in 2016, leaving the project millions of tonnes behind its statutory abatement targets.
Heightened Scrutiny Across Australia's Gas Exporters
The Western Australian probe comes as the broader Australian resource sector faces an increasingly unforgiving decarbonisation regime. Both state and federal authorities are clamping down on industrial emissions under the revised Safeguard Mechanism, which imposes declining baselines on heavy polluters.
Industry analysts note that fugitive methane leaks represent an acute reputational and economic liability for exporters attempting to market liquefied natural gas as a transitional fuel in Asian markets. If DWER finds that Chevron exceeded licensed limits or failed to report releases promptly, the regulator could issue formal remediation notices, alter the facility's operating licence, or pursue enforcement action in court.
Chevron has maintained that it operates within regulatory parameters and continues to work collaboratively with state authorities to address technical challenges across its Pilbara operations.