v3.26.1
Cover - shares
6 Months Ended
Jun. 30, 2026
Aug. 14, 2026
Cover [Abstract]    
Entity Registrant Name OCEAN THERMAL ENERGY CORPORATION  
Entity Central Index Key 0000827099  
Document Type 10-Q  
Amendment Flag false  
Current Fiscal Year End Date --12-31  
Entity Small Business true  
Entity Shell Company false  
Entity Emerging Growth Company false  
Entity Current Reporting Status Yes  
Document Period End Date Jun. 30, 2026  
Entity Filer Category Non-accelerated Filer  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2026  
Entity Common Stock Shares Outstanding   190,012,124
Document Quarterly Report true  
Document Transition Report false  
Entity File Number 033-19411-C  
Entity Incorporation State Country Code NV  
Entity Tax Identification Number 20-5081381  
Entity Address Address Line 1 3675 Market Street  
Entity Address Address Line 2 Suite 200  
Entity Address City Or Town Philadelphia  
Entity Address State Or Province PA  
Entity Address Postal Zip Code 19104  
City Area Code 717  
Local Phone Number 299-1344  
Entity Interactive Data Current Yes