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Biological assets (Details) - USD ($)	Sep. 30, 2024	Sep. 30, 2023
Biological assets
Biological assets	$ 30,358,304	$ 29,199,895
Less: accumulated depreciation	(1,835,401)	(844,306)
Biological assets, net	$ 28,522,903	$ 28,355,589

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- References

No definition available.

+ Details

Name:	cney_AccumulatedDepreciationBiologicalAssets
Namespace Prefix:	cney_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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No definition available.

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Name:	cney_BiologicalAssetsAbstract
Namespace Prefix:	cney_
Data Type:	xbrli:stringItemType
Balance Type:	na
Period Type:	duration

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No definition available.

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Name:	cney_BiologicalAssetsGross
Namespace Prefix:	cney_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant

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No definition available.

+ Details

Name:	cney_BiologicalAssetsNet
Namespace Prefix:	cney_
Data Type:	xbrli:monetaryItemType
Balance Type:	debit
Period Type:	instant