v3.24.2.u1
Document and Entity Information - shares
 6 Months Ended
Jun. 30, 2024
Jul. 25, 2024
Entity Listings [Line Items]    
Document Type 10-Q  
Document Quarterly Report true  
Document Period End Date Jun. 30, 2024  
Document Transition Report false  
Entity Registrant Name EVgo Inc.  
Entity Incorporation, State or Country Code DE  
Entity Tax Identification Number 85-2326098  
Entity Address, Address Line One 11835 West Olympic Boulevard, Suite 900E  
Entity Address, City or Town Los Angeles  
Entity Address, State or Province CA  
Entity Address, Postal Zip Code 90064  
City Area Code 877  
Local Phone Number 494-3833  
Entity Current Reporting Status Yes  
Entity Interactive Data Current Yes  
Entity Filer Category Non-accelerated Filer  
Entity Small Business true  
Entity Emerging Growth Company true  
Entity Ex Transition Period false  
Entity Shell Company false  
Entity File Number 001-39572  
Entity Central Index Key 0001821159  
Current Fiscal Year End Date --12-31  
Document Fiscal Period Focus Q2  
Document Fiscal Year Focus 2024  
Amendment Flag false  
Class A Common Stock    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   106,825,488
Title of 12(b) Security Class A common stock, $0.0001 par value per share  
Trading Symbol EVGO  
Security Exchange Name NASDAQ  
Redeemable Warrants For Class Common Stock    
Entity Listings [Line Items]    
Title of 12(b) Security Redeemable warrants included as part of the units, each whole warrant exercisable for one share of Class A common stock at an exercise price of $11.50  
Trading Symbol EVGOW  
Security Exchange Name NASDAQ  
Class B Common Stock    
Entity Listings [Line Items]    
Entity Common Stock, Shares Outstanding   195,800,000