v3.26.1
Document And Entity Information
 12 Months Ended
Mar. 31, 2026
shares
Document Information [Line Items]  
Document Type 20-F
Document Registration Statement false
Document Annual Report true
Document Transition Report false
Document Financial Statement Error Correction [Flag] false
Document Shell Company Report false
Entity Interactive Data Current Yes
Document Accounting Standard U.S. GAAP
ICFR Auditor Attestation Flag false
Amendment Flag false
Document Period End Date Mar. 31, 2026
Document Fiscal Year Focus 2026
Document Fiscal Period Focus FY
Entity Registrant Name Ridgetech, Inc.
Entity Central Index Key 0001856084
Entity File Number 001-40724
Entity Incorporation, State or Country Code E9
Current Fiscal Year End Date --03-31
Entity Well-known Seasoned Issuer No
Entity Voluntary Filers No
Entity Current Reporting Status Yes
Entity Shell Company false
Entity Filer Category Non-accelerated Filer
Entity Emerging Growth Company false
Entity Address, Address Line One 5th Floor, Building 6
Entity Address, Address Line Two No. 100, 18th Street
Entity Address, Address Line Three Baiyang Sub-district
Entity Address, City or Town Hangzhou City
Entity Address, Country CN
Entity Address, Postal Zip Code 310008
Title of 12(b) Security Ordinary shares, par value $0.15 per share
Trading Symbol RDGT
Security Exchange Name NASDAQ
Entity Common Stock, Shares Outstanding 133,090,838
Business Contact [Member]  
Document Information [Line Items]  
Contact Personnel Name Ming Zhao
Entity Address, Address Line One 5th Floor, Building 6
Entity Address, Address Line Two No. 100, 18th Street
Entity Address, Address Line Three Baiyang Sub-district
Entity Address, City or Town Hangzhou City
Entity Address, Country CN
Entity Address, Postal Zip Code 310008
City Area Code +86
Local Phone Number 571-88219579