DTE natural gas customers in Michigan can expect their bills to increase starting this Friday.

Late last week the Michigan Public Service Commission authorized DTE to increase its rates by $122,269,000 annually effective on December 16.

This on top of a $103 million dollar self-implemented rate hike the natural gas supplier put into effect last month.

Residential customers using 100 ccf of natural gas a month will see an increase of $6.65 on their monthly bills over rates set in the last MPSC rate case, which was in December 2012.