Solar project portfolio and deferred-construction obligation (Details Narrative) - USD ($)	3 Months Ended	6 Months Ended
Mar. 31, 2026	Mar. 31, 2025	Mar. 31, 2026	Mar. 31, 2025
Cost of revenue	$ 1,446,197	$ 41,100	$ 1,681,754	$ 100,393
Solar Equipment [Member]
Cost of revenue	$ 1,289,448		$ 1,486,889
Cost percentage of listed projects	67.00%
Cost percentage of other funded projects	62.00%
Impairment of capitalized costs	$ 49,064

The aggregate cost of goods produced and sold and services rendered during the reporting period.

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+ Details