| Cover Page Cover Page | Aug. 04, 2020 | May 05, 2020 |
| Cover [Abstract] | ||
| Entity Central Index Key | 0001463101 | |
| Document Type | 8-K | |
| Document Period End Date | Oct. 27, 2020 | |
| Entity Registrant Name | ENPHASE ENERGY, INC. | |
| Entity Incorporation, State or Country Code | DE | |
| Entity File Number | 001-35480 | |
| Entity Tax Identification Number | 20-4645388 | |
| Entity Address, Address Line One | 47281 Bayside Parkway | |
| Entity Address, City or Town | Fremont | |
| Entity Address, State or Province | CA | |
| Entity Address, Postal Zip Code | 94538 | |
| City Area Code | 877 | |
| Local Phone Number | 774-7000 | |
| Written Communications | false | |
| Soliciting Material | false | |
| Pre-commencement Tender Offer | false | |
| Pre-commencement Issuer Tender Offer | false | |
| Title of 12(b) Security | Common Stock, $0.00001 par value per share | |
| Trading Symbol | ENPH | |
| Security Exchange Name | NASDAQ | |
| Security Exchange Name | false | |
| Amendment Flag | false |
