Registration of securities issued in business combination transactions

Document And Entity Information

v3.22.1
Document And Entity Information
12 Months Ended
Dec. 31, 2021
Document Information Line Items  
Entity Registrant Name CLEANTECH ACQUISITION CORP.
Document Type S-4/A
Amendment Flag true
Amendment Description Amendment No. 2
Entity Central Index Key 0001849820
Entity Filer Category Non-accelerated Filer
Entity Small Business true
Entity Emerging Growth Company true
Entity Ex Transition Period false
Entity Incorporation, State or Country Code DE