Annual report pursuant to Section 13 and 15(d)

Commitments and contingencies - Agreement with Digital Energy Corp. (Details)

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Commitments and contingencies - Agreement with Digital Energy Corp. (Details) - USD ($)
12 Months Ended
Dec. 31, 2019
Mar. 31, 2019
Loss Contingencies [Line Items]    
Guarantee liability $ 112,311 $ 350,000
Shortfall payments 319,649  
Provision 81,960  
Eurosite Power Inc.    
Loss Contingencies [Line Items]    
Guarantee of obligations of EuroSite Power Inc. 138,000  
Guarantee liability $ 7,000