NorthWestern's GAAP net income for 2021 was $186.8 million, up 20.4% from $155.2 million in the previous year. Revenue increased 14.5% to $1.372 billion from $1.198 billion a year earlier.
NorthWestern's GAAP net income for 2021 was $186.8 million, up 20.4% from $155.2 million in the previous year. Revenue increased 14.5% to $1.372 billion from $1.198 billion a year earlier. 
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