v3.19.3.a.u2
Cover
Jan. 21, 2020
Cover [Abstract]  
Document Type 8-K
Amendment Flag false
Document Period End Date Jan. 21, 2020
Entity File Number 001-36087
Entity Registrant Name PATTERN ENERGY GROUP INC.
Entity Central Index Key 0001561660
Entity Tax Identification Number 90-0893251
Entity Incorporation, State or Country Code DE
Entity Address, Address Line One 1088 Sansome Street
Entity Address, City or Town San Francisco
Entity Address, State or Province CA
Entity Address, Postal Zip Code 94111
City Area Code (415)
Local Phone Number 283-4000
Written Communications false
Soliciting Material true
Pre-commencement Tender Offer false
Pre-commencement Issuer Tender Offer false
Title of 12(b) Security Class A common stock
Trading Symbol PEGI
Security Exchange Name NASDAQ
Entity Emerging Growth Company false