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Colorado Co-op Completes Large Energy Storage Installation

Randy Sukow / Oct 22, 2018

NRTC member United Power Inc., Brighton, CO, is building a massive energy storage system at its Firestone, CO, substation. The battery capacity there will save United members energy costs by distributing wholesale electricity during peak generation periods. United is planning a formal ribbon cutting for Dec. 18 for the battery park, which it built in cooperation with NRTC and its solar/storage partner, ENGIE.

Jerry Marizza, United’s new business director (pictured right), described the installation to a recent gathering of visitors. The white cabinets contain a series of Tesla Powerpack lithium ion 56 kilowatt batteries each with four-hour duration. The entire system includes 80 interconnected batteries with a total of 16 megawatt hours of storage – the equivalent the amount of power to serve 700 homes for four hours.

United says that it has already begun building a similarly sized energy storage system with Tesla and ENGIE at another substation location.

Marizza said that United chose Tesla batteries because the company has had years of experience with power storage. “I feel they’re kind of battle tested. They’ve been operating cars and doing things with batteries for a long time. There’s a bit of a known quantity to the Tesla battery,” he said.


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