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Cool Planet Energy Systems, which builds small-scale biorefineries for fuel production, announced Tuesday the company has raised $19.4 million in a D round series of fundraising.
That’s on top of $29.9 million the company announced in June it had raised from investors. Along with other money raised or committed, the company's total has reached more than $60 million.
Cool Planet’s CEO Howard Janzen said investors see an opportunity in the company’s “drop-in” technology.
“Our drop-in…