On September 21, 2022, Mainspring Energy Inc., a US-based clean power generation provider, has raised $188 million (US$140 million) in an extension to its Series E round, which brings Mainspring’s total funding to $390 million (US$140 milllion). Global growth equity investor Lightrock led the Series E, joined by Canada Pension Plan Investment Board (CPP Investments), Shell Ventures, Hanwha Power Systems, and other new private investors, along with existing investors Khosla Ventures, Bill Gates, Fine Structure Ventures (the private equity firm affiliated with parent company Fidelity Investments), Princeville Capital, and others. Mainspring CEO and Founder Shannon Miller said, “The world-class group of investors in our Series E represents some of the top clean energy and climate investors in the world. They are deeply committed to meeting our mutual goal of clean, reliable, affordable power for all." Mainspring announced in a press release that the funding will be used for operations expansion and scale manufacturing of clean energy generators for commercial, industrial, and grid-side customers.