Marquette Connector Pipeline

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Marquette Connector Pipeline is an operating natural gas pipeline in Michigan.

Location

The pipeline will run from Arnold, Michigan to Negaunee Township, Michigan.

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Project Details

• Owner: SEMCO Energy Gas Co.
• Parent Company: AltaGas
• Proposed capacity: 144 million cubic feet per day
• Length: 67.6 kilometers / 42 miles
• Diameter: 10, 20 inches
• Status: Operating
• Start Year: 2019
• Cost: US $135 - $140 million.

Background

The only gas supply that served the northern Upper Peninsula of Michigan was the Northern Natural Gas (NNG) pipeline. Any interruption in the line would disrupt the service to the entire region. The Marquette Connector was deigned to connect the Northern Natural Gas Transmission pipeline currently serving the region to the Great Lakes Gas Transmission pipeline system and the Upper Peninsula to enhance energy reliability and capacity. Engineering and permitting are currently in progress. Completion is expected in the fourth financial quarter of 2019. The Marquette Connector will run approximately 42-miles and consist of two sections of pipeline. The pipeline capacity will be 144 Million Cubic Feet (MMCF) per day. The current route for the Marquette Connector will run mostly adjacent to existing gas and electric transmission line right of ways. The total cost of the project is estimated at approximately $135 - $140 million.

SEMCO filed for regulatory approval for the pipeline in December 2016. The pipeline become operational in November of 2019.