Attached files

file filename
EX-32.2 - EX-32.2 - Otter Tail Corpa202010kex322.htm
EX-32.1 - EX-32.1 - Otter Tail Corpa202010kex321.htm
EX-31.2 - EX-31.2 - Otter Tail Corpa202010kex312.htm
EX-31.1 - EX-31.1 - Otter Tail Corpa202010kex311.htm
EX-24.-A - EX-24-A - Otter Tail Corpa2020ex24-apowerofattorney.htm
EX-23.-A - EX-23-A - Otter Tail Corpa2020ex23-aconsentofindepe.htm
10-K - 10-K - Otter Tail Corpottr-20201231.htm

Exhibit 21-A
OTTER TAIL CORPORATION
Subsidiaries of the Registrant
February 19, 2021

CompanyState of Organization
BTD Manufacturing, Inc.  Minnesota
Northern Pipe Products, Inc.  North Dakota
Otter Tail Assurance Limited Cayman Islands
Otter Tail Power Company Minnesota
T.O. Plastics, Inc.  Minnesota
Varistar Corporation  Minnesota
Vinyltech Corporation Arizona