Mainspring Secures $258 Million in Financing to Scale Linear Generator Business; Adds Energy and Tech Leaders to Board

Mainspring Secures $258 Million in Financing to Scale Linear Generator Business; Adds Energy and Tech Leaders to Board

MENLO PARK, Calif., April 14, 2025 /PRNewswire/ -- Mainspring Energy Inc. announced today that it has secured $258 Million in a Series F financing round to expand the company's linear generator power business and operations as it grows in both…

Khosla-Backed Energy Startup Nabs $258 Million to Help Power Data Centers

Mainspring Energy’s generators are able to run on different types of gas, including carbon-free hydrogen.

Mainspring Raises $258M in Financing

Mainspring, a Menlo Park, CA-based linear generator products company, raised $258M in Series F funding. The round was led by General Catalyst, with participation from Amazon’s Climate Pledge Fund, DCVC, Temasek, Marunouchi Innovation Partners, M&G Investments, Pictet Group, and earlier investors including Lightrock and LGT Bank, Khosla Ventures, and Gates Frontier, among others. The company […] The post Mainspring Raises $258M in Financing appea…

Khosla-Backed Energy Startup Nabs $258M to Help Power Data Centers - Mainspring Energy’s generators are able to run on different types of gas, including carbon-free hydrogen - Hydrogen Central

Khosla-Backed Energy Startup Nabs $258M to Help Power Data Centers – Mainspring Energy’s generators are able to run on different types of gas, including carbon-free hydrogen Mainspring Energy’s generators are able to run on different types of gas, including carbon-free hydrogen. A startup that builds novel generators has raised $258 million, fueled by the tailwinds of power-hungry artificial intelligence. Mainspring Energy Inc. counts among its …

Khosla-Backed Mainspring Raises $258M for Data Center Power

Mainspring Energy, supported by Khosla Ventures, secures $258M to enhance data center energy solutions with versatile gas-run generators.

Mainspring Energy Secures $258M in Funding

Mainspring Energy just landed a hefty $258 million in Series F funding, and it’s not wasting a second putting it to work. The company behind the sleekly named linear generator is scaling up manufacturing, growing its customer base, and expanding its boardroom firepower with two heavyweight industry veterans. This move isn’t just about growth — it’s a loud signal that clean, dispatchable, fuel-flexible power is no longer some theoretical dream. I…