v3.22.1

Summary of significant accounting policies (Tables) | 3 Months Ended
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Mar. 31, 2022
Accounting Policies [Abstract] |
Revenue from External Customers by Products and Services [Table Text Block] | The Company generates revenue from sales of solar products, LED lighting, installation services and leasing fees. During the last two fiscal years, the company had product sales as follows:
Sales Product and Services Description |  | March 31, 2022 |  |  | March 31, 2021 |
Solar PV residential and commercial sales |  | $ | 229,151 |  |  |  | 78 | % |  | $ | 320,464 |  |  |  | 96 | %
Air conditioning sales and service |  |  | 58,017 |  |  |  | 20 | % |  |  | 6,540 |  |  |  | 2 | %
Energy efficient lighting & other income |  |  | 5,994 |  |  |  | 2 | % |  |  | 8,722 |  |  |  | 2 | %
Interest Income |  |  | 71 |  |  |  | - |  |  |  |  |  |  |  | - | %
Total revenue |  | $ | 293,233 |  |  |  | 100 | % |  | $ | 335,726 |  |  |  | 100 | %

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- Definition Tabular disclosure of entity-wide revenues from external customers for each product or service or each group of similar products or services if the information is not provided as part of the reportable operating segment information. + References Reference 1: http://fasb.org/us-gaap/role/ref/legacyRef -Publisher FASB -Name Accounting Standards Codification -Topic 280 -SubTopic 10 -Section 50 -Paragraph 40 -URI https://asc.fasb.org/extlink&oid=126901519&loc=d3e9031-108599 + Details
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