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Local resident questions Excel/Connexus iron‑air battery plans, says federal grant pulled and technical claims questionable
6498838 · October 8, 2025
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Summary
At open forum, a Big Lake resident criticized iron‑air battery storage projects involving Excel and Connexus, saying federal grant support was pulled and outlining concerns about charging efficiency, cycle life and unrealistic performance claims.
At the Sherburne County Board of Commissioners' open forum, Brett Collier of Big Lake questioned the technical and financial merits of proposed iron‑air battery storage projects tied to Excel and Connexus.
Collier said the federal government withdrew $770 million in grant funding for the broader program of battery storage projects…
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