On 7 August 2026, the Federal Court of Australia delivered its judgment in The Wilderness Society Ltd v National Offshore Petroleum Safety and Environmental Management Authority [2026] FCA 1082, dismissing a challenge to NOPSEMA's acceptance of the Environment Plan (EP) for the Reindeer Wellhead Platform and Gas Supply Pipeline Operations and Cessation of Production activities (Decision) under regs 33(1)(a), 33(7) and 16(1)(a) of the Offshore Petroleum and Greenhouse Gas Storage (Environment) Regulations 2023 (Cth) (Environment Regulations). The judgment clarifies the operation of the financial assurance regime under s 571(2) of the Offshore Petroleum and Greenhouse Gas Storage Act 2006 (Cth) (OPGGS Act). For background to the proceedings see Financial assurance for offshore decommissioning: Federal Court to rule on NOPSEMA’s approach.

The Court confirmed that financial assurance requirements must be assessed by reference to "the petroleum activity" the subject of the specific EP under consideration, in this case the Reindeer EP. Importantly, decommissioning was not part of the scope of the EP under consideration. The "petroleum activities" in the EP included "the operation phase", and the "cessation of production (preservation) phase", with the EP disclosing that the titleholder was considering two repurposing options in lieu of decommissioning. The "preservation phase" was expected to last some 36 months. NOPSEMA found that the titleholder complied with ss 572(2) and (3), and those findings were not challenged by The Wilderness Society (TWS).^[1]  

Court judgment

The issue before the Court was whether NOPSEMA erred in failing to construe s 571(2) of the OPGGS Act as requiring financial assurance to be provided for decommissioning costs, expenses and liabilities, in respect of the Reindeer EP in order for NOPSEMA to achieve "reasonable satisfaction" as required by reg 16 (1) of the Environment Regulations. This begs the question whether s 571(2) extends to future decommissioning liabilities that might be incurred or only to costs arising from "the petroleum activity" specifically described in the specific EP under consideration.^[2]

TWS argued that the financial assurance provided by the titleholder ought to have included decommissioning costs, as well as liabilities arising from accidental petroleum incidents.^[3]  As the financial assurance assessment did not extend to decommissioning costs,^[4] TWS contended that NOPSEMA had misconstrued s 571(2), and its acceptance of the EP should be quashed.^[5]

NOPSEMA and the titleholder argued instead that s 571(2) is directed to "the [particular] petroleum activity" the subject of the relevant environment plan.^[6] As "the petroleum activity" the subject of the EP did not itself include decommissioning activities, instead contemplating that decommissioning or repurposing would be addressed in a future EP, the financial assurance assessment for the current EP under consideration need not include decommissioning costs, liabilities and expenses.^[7]

Six primary reasons the court accepted NOPSEMA's position

1. First it held that s 571 of the OPGGS Act and reg 16 of the Environment Regulations are directed to the specific petroleum activity the subject of the EP, rather than all future activities that may occur under a title.^[8] Accordingly, the costs, expenses and liabilities captured by s 571(2) need only be referable to the specific activity for which approval is currently sought.^[9] The Court emphasised the distinction between "a petroleum activity" and "the petroleum activity", finding that NOPSEMA's task was to assess compliance with s 571(2) in respect of "the [particular] petroleum activity identified in the EP before it.^[10]
2. It found that TWS' interpretation detached the financial assurance requirement from "the [specific] petroleum activity" under consideration and would require decommissioning costs to be assessed regardless of the specific activity the subject of the EP.^[11] The Court found this was contrary to the text and structure of the legislative scheme,^[12]  which contemplates approval being sought for different activities throughout the life of the petroleum title.
3. The Court rejected TWS' contention that decommissioning obligations under s 572 automatically arise whenever infrastructure exists on a title.^[13] The Court noted that the obligation in s 572(3) is only triggered when structures or equipment are no longer used, or intended to be used, and it is also subject to s 572(7).^[14] Accordingly, decommissioning could not be characterised as an inevitable liability under s 571(2).^[15]
4. The Court considered the statutory context did not accord with TWS' broader interpretation.^[16] In particular, the examples provided in s 571(2) were suggestive of extraordinary costs, expenses and liabilities arising in connection with the petroleum activity in question, rather than future decommissioning costs, which was not part of the specific petroleum activity under consideration in the EP.^[17]
5. The legislative history supported NOPSEMA's construction of s 571(2).^[18] The Explanatory Memorandum and Second Reading Speech accompanying the 2013 amendments stated that the financial assurance regime was intended to operate through the EP approval process and to ensure titleholders could meet "extraordinary costs" arising from the relevant activity, consistent with the "polluter pays" principle.^[19]
6. Finally, the Court considered that TWS' construction would produce impractical outcomes by requiring titleholders to estimate and provide financial assurance for uncertain future decommissioning activities that may never occur.^[20]

Practical implications

This judgment has several important implications for offshore petroleum titleholders:

• Financial assurance assessments are specific to "the petroleum activity" the subject of the specific EP: NOPSEMA assesses compliance with s 571(2) by reference to "the [specific] petroleum activity" the subject of the relevant EP, rather than all activities that may (or may not) occur under the title in future.
• Decommissioning can be addressed at the appropriate stage of a project's lifecycle: The judgment confirms that decommissioning need not be assessed as part of every EP.  Instead, the legislative scheme contemplates that titleholders will incrementally seek approval for different activities throughout the life of the petroleum title. The financial assurance required is referable to the specific activity under consideration.
• The Court adopted a literal interpretation of the legislative scheme: Significant weight was placed on the repeated statutory references to "the petroleum activity", with the Court finding that financial assurance obligations must be assessed by reference to the activity for which approval is being sought, rather than uncertain future activities that may never occur.
• The judgment provides greater clarity: The Court's endorsement of NOPSEMA's approach gives operators greater confidence that financial assurance obligations will be assessed by reference to the specific petroleum activity under consideration, rather than uncertain future decommissioning outcomes.^[21]