MILWAUKEE (AP) — Wisconsin regulators have approved a $9 billion transaction that combines Wisconsin Energy Corp. and Integrys Energy Group.

The Milwaukee Journal Sentinel (http://bit.ly/1zihJaF ) reports Wisconsin's Public Service Commission decided in favor of We Energies' parent company on most of the issues in the case Thursday. But the commission attached several conditions in response to concerns ratepayers weren't being offered enough protections.

The PSC is among a number of federal and state agencies that must approve the acquisition that creates WEC Energy Group, which will serve more than 4.3 million gas and electric customers across Wisconsin, Illinois, Michigan and Minnesota.

Thursday's vote in Wisconsin follows approvals from the Federal Energy Regulatory Commission and Michigan's Public Service Commission.

Votes are expected in Minnesota next month and by July in Illinois.

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Information from: Milwaukee Journal Sentinel, http://www.jsonline.com