Cover - shares	6 Months Ended
	Jun. 30, 2025	Aug. 01, 2025
Entity Addresses [Line Items]
Document Type	10-Q
Document Quarterly Report	true
Document Period End Date	Jun. 30, 2025
Document Transition Report	false
Entity File Number	001-32347
Entity Registrant Name	ORMAT TECHNOLOGIES, INC.
Entity Incorporation, State or Country Code	DE
Entity Tax Identification Number	88-0326081
Entity Address, State or Province	NV
Entity Address, Address Line One	6884 Sierra Center Parkway,
Entity Address, City or Town	Reno,
Entity Address, Postal Zip Code	89511-2210
City Area Code	775
Local Phone Number	356-9029
Title of 12(b) Security	Common Stock
Trading Symbol	ORA
Security Exchange Name	NYSE
Entity Current Reporting Status	Yes
Entity Interactive Data Current	Yes
Entity Filer Category	Large Accelerated Filer
Entity Small Business	false
Entity Emerging Growth Company	false
Entity Shell Company	false
Document Fiscal Year Focus	2025
Entity Common Stock, Shares Outstanding		60,723,470
Entity Central Index Key	0001296445
Amendment Flag	false
Current Fiscal Year End Date	--12-31
Document Fiscal Period Focus	Q2
Former Address
Entity Addresses [Line Items]
Entity Address, State or Province	NV
Entity Address, Address Line One	6140 Plumas Street
Entity Address, City or Town	Reno
Entity Address, Postal Zip Code	89519-6075