SAN FRANCISCO (MarketWatch) — Plug Power Inc. soared more than 40% on Wednesday following the announcement of a partnership with FedEx Corp. The stock was recently up 20% at $4.61 a share. Plug said Tuesday it will develop hydrogen fuel cell range extenders for 20 FedEx Express electric delivery trucks, allowing the company to nearly double the area the trucks can cover with one charge. The $3 …
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