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COLUMBIA FALLS- A Columbia Falls company is building batteries as big as a Walmart building and business is booming.

Zinc Air of Columbia Falls has been developing a new generation of batteries to store electricity generated by wind power and to distribute it to the power grid on demand.

Executive Vice President Craig Wilkins says they are also developing smaller field projects which could be used on farms.

The company is also doing its part to keep residents in the Flathead Valley employed with a staff of 34, and they're looking to expand in the near future.

"We're typically we say it's utility scale. So probably anything in the one megawatt or greater is probably our biggest area of expertise. We have been looking at some of the rural agricultural, applications for farms and I guess smaller areas," Wilkins said.

He added they look forward to putting their product to the test on a wind farm in Montana.