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From Coal to Sol! Holyoke’s Mt. Tom Generating Plant is making the switch to solar, but its dirty past lurks

Hailed as one of the largest in the state, the 5.76 megawatt solar plant being installed at the old coal plant along Route 5 in Holyoke is considered a big win for environmental and community activists.
But their battle with coal isn’t over. Toxic waste created during decades of coal-fired energy production led to the creation of 21 ash ponds and two dumps on the 128-acre, Connecticut River-adjacent property. There’s also the issue of energy supply. Though reliance on the Mt. Tom coal plant had significantly diminished over the years — when it shut down, the plant was only running during peak demand times in the winter — the plant was built with a 146 megawatt-production capacity.

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