# NSW Government Plans Legislation to Override High Court Ruling on Coal Mine Expansion

> The New South Wales Minns government announced plans on October 19, 2026, to introduce special legislation allowing MACH Energy's Mount Pleasant coal mine to boost its annual production by 32%, from 12.5 million to 16.5 million tonnes.

By PrimaryBrief newsroom · Published 2026-10-19T15:45:12.923966Z
Canonical: https://primarybrief.com/article/nsw-government-plans-legislation-to-override-high-court-ruling-on-coal-mine-expansion-88b51b7e

The New South Wales Minns government announced plans on October 19, 2026, to introduce special legislation allowing MACH Energy's Mount Pleasant coal mine to boost its annual production by 32%, from 12.5 million to 16.5 million tonnes [1]. This move comes less than two weeks after the High Court of Australia invalidated a previous expansion approval for the mine [1].

This legislative intervention aims to bypass a landmark High Court ruling from October 7, 2026, that had blocked the expansion over its failure to adequately consider emissions from exported coal [1][2][3][4]. It matters because it could set a precedent for governmental override of judicial decisions concerning environmental regulations and the climate change impacts from fossil fuel projects [1][4].

## What the records show

The New South Wales government's plan involves special legislation to permit the Mount Pleasant coal mine's expanded production until 2032 [1]. This would increase annual output by 4 million tonnes, bringing the total to 16.5 million tonnes from the current 12.5 million tonnes [1].

The High Court of Australia, in its October 7, 2026, decision, found that the NSW Independent Planning Commission (IPC) made a "jurisdictional error" by not considering conditions to minimize "Scope 3 emissions" [1][2][6]. These emissions, generated when exported coal is burned overseas, represent approximately 98% of the project's total greenhouse gas emissions [2][3][5][6]. The High Court's 3-2 majority decision dismissed an appeal by MACH Energy Australia Pty Ltd, upholding a lower court's finding [4][5][6]. The court found the IPC did not comply with its obligation to consider "likely impacts of that development, including environmental impacts ... in the locality" and whether to impose conditions to minimize greenhouse gas emissions [2][4].

## The timeline

Prior to October 7, 2026, MACH Energy had sought to extend the life of its Mount Pleasant mine, which was due to end operations in December of this year, until 2048, and to double its coal production [3]. The NSW Independent Planning Commission (IPC) had granted development consent for this expansion [2][3].

On October 7, 2026, the High Court of Australia, in a 3-2 decision, dismissed MACH Energy's appeal with costs [2][3][4][5][6]. The court found the IPC failed to properly consider imposing rules to mitigate the project's climate footprint, specifically regarding Scope 3 emissions [2][3][4][6]. This ruling was the first climate change case to come before Australia's top court, initiated by the community group Denman Aberdeen Muswellbrook Scone Healthy Environment Group (DAMSHEG) [3][4][6].

On October 19, 2026, the New South Wales Minns government announced its plan to introduce special legislation to allow the Mount Pleasant coal mine to increase its annual production [1].

## What changed and for whom

For MACH Energy, the High Court ruling initially invalidated their expansion approval, which would have impacted their plans to continue operations beyond 2026 and extract an additional 406 million tonnes of coal [3]. The government's new legislative plan would allow the company to proceed with a significant production increase until 2032, reversing the immediate impact of the High Court's decision [1][3].

For community groups like DAMSHEG, who were instrumental in the legal challenge, the government's move seeks to override a landmark legal victory that set a precedent for considering Scope 3 emissions in project approvals [1][3][4][6]. For the NSW government, this move demonstrates an intent to prioritize economic activity in the coal sector despite judicial rulings on environmental grounds [1]. Legal experts indicated the High Court's ruling had implications for other fossil fuel projects [4].

## What the subject has said publicly

The evidence states the Minns government "announced plans" to introduce legislation [1]. It does not include direct quotes or detailed public statements from Minns government officials or MACH Energy regarding the High Court ruling or the proposed legislation.

## What we could not confirm

We could not confirm the precise date the special legislation will be introduced [1]. We could also not confirm the specific details or wording of the proposed legislation [1]. There are no explicit reasons or statements from the Minns government provided in the evidence for overriding the High Court's decision, beyond the stated intention to allow increased production [1]. Any public statements from MACH Energy regarding the High Court ruling or the government's subsequent plan are not included in the evidence [3]. We also could not confirm any public statements from DAMSHEG reacting to the government's announcement [3].

## Evidence cited
1. Minns accused of bypassing high court ruling with laws to allow NSW mine to increase coal production by 32% (www.theguardian.com) — https://www.theguardian.com/australia-news/2026/oct/19/chris-minns-bill-expansion-mount-pleasant-coalmine-high-court-decision
2. Current time information in Wollongong City Council, AU. The time at the location 'Wollongong City Council, AU' is 03:51 PM. The location's timezone is 'Australia/Sydney'. — https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQGWZ7h8aFcsVbIksdgFriMXj2W0-397XQLVWFaGDo638JqemTki2sh7fHSiwYzIELKBjlKSKS3snmuMt706rcvB8Z6Ln6uc1WYJWVYIYxyjQJHUvU6Uic5_hwyulDXoLrsubkcr8YbZgUa8HSEYEDok52J2I4g_L3SUGHIrJF-BfGiWUhMwAqH1aE5bBeeDUp1qAon97bfKUPhuFPBPWuFWmYse3XofzlB3jmF99niHOIevhrOwUtlkRGpFvourO7mwW_aZfxnKVwb1YjnAS8NqbcDoJPzyWsttJOmaDsCgT8ggv468UgG7X4_4O3sBJo6HnzopaPMMUvdvviGsSN-9_SiWeZksvFHAg4sA-ZtNfP03ssgh1upyj98HxOwdrko4tGQo6GUh_2vPItj
3. mach energy: Australia's High Court blocks coal mine expansion on climate grounds - MINING.COM (miningweekly.com) — https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQGcVcmA_Z2a0keMD5cONpz1SFB4ZZCoKf1sJBOxm3MIpKbz5TmsKnBaeeSdEHGd7gut1TE-7xLPivQ1BNTo6GOx4M-IDQcAd7zkqOUsYBL7SMxK3Kz1b1OXGJ5rDPvL6AqcNtPf1Uj_a-K5d2czUIuOkoyckTCEIPMx0gU2ekFi0oSq6oUBv1JHrqd5Neojbb6OuD3cM2LpxBWoyvF2_1Sj7bi0IWytA1dSb1hgKtzTmSsU_oVvlBw_-8aEqqg=
4. Australia's High Court invalidates coal mine expansion over climate change emissions (climateinthecourts.com) — https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQFwNXOWuFct-cMv278gIisKXfVzR3j3R5d4h_mxCJGMe4rPkEqjragV02AVFL5z6nC13JC3wnYXwWQJzXIoGPdmIPkoeZ4oamTQM2SgVhKZdCucPbKFDS9B0W_TeLOG9_8yoNaSIVxLUHtDrLHa10i7UYk1DaYD74uFzoDBProsE-_VdYQMiVWPW7kBruvrMmPi5yDWgnyGJi5FdH1khW5OwMHXXRR1jQ==
5. Australia's High Court blocks coal mine expansion on climate grounds - Chinadaily.com.cn (chinadailyhk.com) — https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQGn-ig4K16PjmXgr7eNwxfNCDual-1KN8DdKJ41j6YwH2H0HjNQri5ixdN2hq_ELe9yGqJ8Pj4B7anMoE-6AN_CdAI635WNdC_W4SOXB33ahxOSdfWFFl4HznE7eyqhlTkiHEUq3-ws0qI=
6. The 98 per cent problem: High Court finds coal mine approval invalid over scope 3 emissions - Bicksteele (bicksteele.com.au) — https://vertexaisearch.cloud.google.com/grounding-api-redirect/AUZIYQHmEkVxhajn_CEsppGj1LNPjQHPTK-R3XreMAlSu50kp6e30FmAqVIsRU6DtFCwB5WmoXEnRO9G6M-JdLCth5nkBEoiARdLNY1raScoeITBrMIomAk9usdLbP9EmiHEGo-SmEm7ntyppsYyPepbJSKpiYHrMdn1tRsaoWrEQbrAuvaJMrrMkZjT3ZpWThxKN2TlNMq-6Z0QU22iMnHHOE_GoByGoAQ0spsIeZeIzhr9IBOUaCfkfv_A-WwrWT38ERDggq8G