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Organization and nature of business (Details) | 12 Months Ended
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Sep. 30, 2024
Subsidiary One [Member] |
Name of Entity | CN Energy
Date of Incoporation | Nov. 23, 2018
Percentage of Ownership | Parent
Place of Incorporation | British Virgin Islands
Principal Activities | Holding company
Subsidiary Two [Member] |
Name of Entity | Energy Holdings
Date of Incoporation | Aug. 29, 2013
Percentage of Ownership | 100.00%
Place of Incorporation | Hong Kong, China
Principal Activities | Holding company
Subsidiary Three [Member] |
Name of Entity | Zhejiang CN Energy
Date of Incoporation | Jan. 14, 2019
Percentage of Ownership | 100.00%
Place of Incorporation | Zhejiang, China
Principal Activities | Holding company
Subsidiary Four [Member] |
Name of Entity | Manzhouli CN Energy
Date of Incoporation | Jan. 24, 2019
Percentage of Ownership | 100.00%
Place of Incorporation | Inner Mongolia, China
Principal Activities | Holding company
Subsidiary Five [Member] |
Name of Entity | Manzhouli CN Technology
Date of Incoporation | Jun. 10, 2019
Percentage of Ownership | 100.00%
Place of Incorporation | Inner Mongolia, China
Principal Activities | Holding company
Subsidiary Six [Member] |
Name of Entity | Zhejiang New Material
Date of Incoporation | May 24, 2021
Percentage of Ownership | 100.00%
Place of Incorporation | Zhejiang, China
Principal Activities | Produce and sell wading activated carbon in the future
Subsidiary Seven [Member] |
Name of Entity | CN Energy USA
Date of Incoporation | Mar. 31, 2022
Percentage of Ownership | 100.00%
Place of Incorporation | Delaware, U.S.
Principal Activities | Investment, consultation and trading, inactive
Subsidiary Eight [Member] |
Name of Entity | Zhoushan Trading
Date of Incoporation | Apr. 08, 2022
Percentage of Ownership | 100.00%
Place of Incorporation | Zhejiang, China
Principal Activities | Trading.
Subsidiary Nine [Member] |
Name of Entity | Ningbo Trading
Date of Incoporation | Apr. 13, 2022
Percentage of Ownership | 100.00%
Place of Incorporation | Zhejiang, China
Principal Activities | Trading.
Subsidiary Ten [Member] |
Name of Entity | Zhejiang Yongfeng New Material
Date of Incoporation | Oct. 11, 2022
Percentage of Ownership | 100.00%
Place of Incorporation | Zhejiang, China
Principal Activities | Trading
Subsidiary Eleven [Member] |
Name of Entity | MZ HK
Date of Incoporation | Dec. 06, 2018
Percentage of Ownership | 100.00%
Place of Incorporation | Hong Kong, China
Principal Activities | 100
Subsidiary Twelve [Member] |
Name of Entity | MZ Pintai
Date of Incoporation | Jan. 22, 2019
Percentage of Ownership | 100.00%
Place of Incorporation | Zhejiang, China
Principal Activities | Holding company
Subsidiary Thirteen [Member] |
Name of Entity | Yunnan, China
Date of Incoporation | Sep. 02, 2022
Percentage of Ownership | 100.00%
Place of Incorporation | Yunnan Yuemu
Principal Activities | Holding company
Subsidiary Fourteen [Member] |
Name of Entity | Yunnan Honghao
Date of Incoporation | May 06, 2013
Percentage of Ownership | 100.00%
Place of Incorporation | Yunnan, China
Principal Activities | Forestry project investment and development

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