Consumers Energy Co. customers will receive a small one-time credit to their electricity bills in the coming months.

The refund follows approval last year by the Michigan Public Service Commission of just over half ($65.8 million) of the Jackson-based utility's $130 million rate increase it implemented on its own in 2017 while awaiting a decision from the commission. The company must return $33.6 million to ratepayers.

For the overcollection from October 2017 to March 2018, residential customers using 500 kilowatt hours a month can expect a one-time refund of about $3.20.

The case is the final self-implementation rate case after energy laws passed in 2016 changed statute to require utilities seek approval from the commission first before increasing their prices.

Funds from the rate increase the commission approved are going toward system reliability, enhanced technology, environmental compliance and grid modernization.

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