Volta (VLTA) 10-K/A 9 Sep 22 2021 FY Annual report (amended) Financial data

Cover Page

Cover Page - USD ($) $ in Millions	12 Months Ended
	Dec. 31, 2021	Apr. 15, 2022	Jun. 30, 2021
Entity Information [Line Items]
Document Type	10-K/A
Document Annual Report	true
Document Period End Date	Dec. 31, 2021
Current Fiscal Year End Date	--12-31
Document Transition Report	false
Entity File Number	001-439508
Entity Registrant Name	Volta Inc.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	35-2728007
Entity Address, Address Line One	155 De Haro Street
Entity Address, City or Town	San Francisco
Entity Address, State or Province	CA
Entity Address, Postal Zip Code	94103
City Area Code	888
Local Phone Number	264-2208
Entity Well-known Seasoned Issuer	No
Entity Voluntary Filers	No
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
ICFR Auditor Attestation Flag	false
Entity Shell Company	false
Entity Public Float			$ 346
Entity Central Index Key	0001819584
Document Fiscal Year Focus	2021
Document Fiscal Period Focus	FY
Amendment Flag	false
Auditor Name	Grant Thornton LLP
Auditor Location	San Francisco, California
Auditor Firm ID	248
Class A common stock, par value of $0.0001 per share
Entity Information [Line Items]
Title of 12(b) Security	Class A common stock, par value of $0.0001 per share
Trading Symbol	VLTA
Security Exchange Name	NYSE
Entity Common Stock, Shares Outstanding		167,198,260
Warrants, each exercisable for one share of Class A common stock for $11.50 per share
Entity Information [Line Items]
Title of 12(b) Security	Warrants, each exercisable for one share of Class A common stock for $11.50 per share
Trading Symbol	VLTA WS
Security Exchange Name	NYSE
Class B Common Stock
Entity Information [Line Items]
Entity Common Stock, Shares Outstanding		395,335