PROVIDENCE, R.I. — Invenergy has reached agreements with the Narragansett Indian Tribe and Benn Water & Heavy Transport to serve as backup water suppliers to the fossil fuel-burning power plant that the Chicago company has proposed in Burrillville.

PROVIDENCE, R.I. — Invenergy has reached agreements with the Narragansett Indian Tribe and Benn Water & Heavy Transport to serve as backup water suppliers to the fossil fuel-burning power plant that the Chicago company has proposed in Burrillville.

Invenergy released the names of the supplemental suppliers on Thursday after submitting the information to the state Energy Facility Siting Board, the lead permitting authority for the $1-billion project known as the Clear River Energy Center.

The company signed an agreement with Johnston under which the town would become the power plant’s primary water supplier, but that pact is being challenged in Superior Court by the Town of Burrillville and the Conservation Law Foundation.

If backup supplies are needed, the Narragansetts would draw from their existing water supply system on tribal lands in Charlestown. According to Invenergy, the system is part of the lower Wood River aquifer in the Pawcatuck Watershed, which the U.S. Geological Survey estimates can yield more than 6 million gallons a day.

Benn Water would transport water from the Narragansett lands to the power plant. But the company also has access to other undisclosed sources of water, according to Invenergy.

The water for the combined-cycle power plant would primarily be used to supply its steam turbines.

— akuffner@providencejournal.com

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On Twitter: @KuffnerAlex