BROCKTON (CBS) — It was once known as “Mount Trashmore,” but the capped landfill has now become a green energy goldmine.

The landfill received that dubious title because of the overpowering stench it created.

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But this week, a new solar power system opened on top of the old Thatcher Street landfill.

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Solar panels atop the capped landfill once known as “Mount Trashmore.” (WBZ-TV)

Brockton city officials claim the solar energy produced at the site should offset the carbon emissions of more than 12,000 cars annually.

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They expect it to also generate more than $300,000 each year in revenue for the city.