The company was subject to a shareholder class action complaint for securities fraud following the IPO for allegedly misleading statements about their fuel cell technology capabilities and on its material sales and distribution relationship with General Electric.

By order dated October 30, 2000, the Eastern District of New York court consolidated the complaints into one action, entitled Plug Power Inc. Securities Litigation, CV-00-5553 (ERK) (RML).

[3] In February 2017, the company announced the first shipments of its ProGen fuel cell engines designed for electric delivery vehicles and the adoption of its GenDrive system by the USPS forklift fleet in Capitol Heights, Maryland.

[4][5] In February 2020, the company introduced 125 kW Progen fuel cell engines for class 6, 7 & 8 trucks and heavy duty off-road equipment.

[10] Due few Hydrogen infrastructure, Plug Power delivers several mobile refueler solution for transit agencies and trucking fleet customers.