Note 8 - Convertible Notes Payable - Related Parties (Tables)

6 Months Ended

Jun. 30, 2021

Notes Tables

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

	June 30, 2020		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 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 76,123 common shares and matured on August 17, 2020.		121,796		224,191
Convertible notes with beneficial conversion features due to the parents of Jeffery Thomas, a Director of CEN, bearing interest at 5% per annum. These notes are convertible to 48,000 common shares with a maturity date of May 24, 2022.		48,000		-
Convertible note in default due to Alex Tarrabain, CFO and a Director of CEN, bearing interest at 5% per annum. On April 10, 2021, this note was converted to 30,000 common shares.		-		48,000
Convertible note due to Darren Ferris, brother of Ameen Ferris, a Vice President and a Director of CEN, bearing interest at 5% per annum. On April 26, 2021, this note was converted to 12,500 common shares.		-		20,000
Total convertible notes payable – related parties		2,436,286		2,558,681
Less unamortized debt discount		16,303		-
Total convertible notes payable - related parties (all current)	$	2,419,983	$	2,558,681