The electric bus manufacturer secured the funding from corporates including General Motors and Exelon, with Mitsui also set to invest.

Proterra, a US-based producer of electric passenger vehicles, has raised $30m in a series D round led by GM Ventures, the corporate venturing unit of General Motors, and venture capital firm Kleiner Perkins Caufield & Byers.

The round also featured other existing investors including Constellation Technology Ventures, the corporate venturing subsidiary of energy company Exelon, Tao Invest, Vision Ridge Partners and Hennessey Capital. Conglomerate Mitsui and 88 Green Ventures are also set to invest by the end of this…