Regulators begin reviewing Otter Tail Power’s proposed 12.5% electric rate increase

Regulators begin reviewing Otter Tail Power’s proposed 12.5% electric rate increase

A sign displays the names of South Dakota's three elected public utilities commissioners outside of their Pierre office in January 2023. (Joshua Haiar/South Dakota Searchlight)South Dakota regulators will take six months to study Otter Tail Power Company’s proposed 12.5% electric rate increase, which the company says would cost a typical residential customer an additional $14.39 per month, or $172.68 per year. The proposal would generate an addi…