Note 8 - Convertible Notes - Related Party (Tables)

3 Months Ended

Mar. 31, 2021

Notes Tables

Schedule of Convertible Notes Payable to Related Party [Table Text Block]

	March 31, 2021		December 31, 2020
Convertible note in default due to the spouse of Bill Chaaban, CEO of CEN, which bears an interest at 12% per annum. This note is convertible to 867,576 common shares and matured on August 17, 2020.	$	1,388,122	$	1,388,122
Convertible notes in default due to Harold Aubrey de Lavenu, a Vice President and Director of CEN, bearing interest at 5% per annum. These notes are convertible to 548,980 common shares and matured on March 31, 2019.		878,368		878,368
Convertible note in default due to Alex Tarrabain, CFO and a Director of CEN, bearing interest at 5% per annum. This note is convertible to 30,000 common shares and matured on March 31, 2019.		48,000		48,000
Convertible notes in default due to Joseph Byrne, former CEO, and current President and member of the board of CEN, bearing interest at 12% per annum. This note is convertible to 140,120 common shares and matured on August 17, 2020.		224,191		224,191
Convertible note due to Darren Ferris, brother of Ameen Ferris, a Vice President and a Director of CEN, bearing interest at 5% per annum. This note is convertible to 12,500 common shares with a maturity date of June 19, 2021.		20,000		20,000
Total convertible notes payable - related party (all current)	$	2,558,681	$	2,558,681