True North Equity LLC, a private-equity company that opened its headquarters in Plymouth in August, has closed on its first deal, which is to join with CIVC PartnersLP of Chicago to buy a controlling interest in KS Energy Services Inc. of New Berlin, Wis.

Jeff Wigginton, the managing partner at True North who previously was a principal at Birmingham-based Strength Capital Partners LLC, said the deal was for between $50 million and $75 million, which is the same range for KS revenue.

Though KS Energy Services, which provides outsourced services such as meter replacement and line repair for utility companies, will remain in Wisconsin, Wigginton said a holding company, KS Energy Holdings LLC, has been created in Plymouth to serve as a platform company for other energy-related acquisitions.

CIVC is a private-equity company with $1.3 billion under management. It has committed up to $100 million more for KS Energy Holding acquisitions