What is LiquidPiston?
LiquidPiston, Inc. is a privately held company based in Bloomfield, Connecticut, specializing in the design and development of compact, lightweight, multi-fuel capable rotary internal combustion engines. Founded in 2003, the company's proprietary High Efficiency Hybrid Cycle (HEHC) thermodynamic architecture merges advantages from Diesel, Otto, and Atkinson cycles to achieve superior efficiency compared to conventional piston engines. The scalable X Engine platform, ranging from 1 HP to over 1,000 HP, is engineered for reduced vibration, noise, and minimal moving parts. LiquidPiston primarily targets the military and aerospace sectors, with expanding applications in UAVs, urban mobility, marine, industrial, and automotive markets. The company operates advanced laboratory and dynamometer testing facilities, having previously received funding and contract awards from entities such as DARPA and the U.S. Army.
How much funding has LiquidPiston raised?
LiquidPiston has raised a total of $46.4M across 9 funding rounds:
Series B
$5M
Series C
$6.5M
Private Equity
$1.1M
Other Financing Round
$1.1M
Debt
$150K
Debt
$284K
Private Equity
$30M
Private Equity
$501K
Series B (2011): $5M, investors not publicly disclosed
Series C (2013): $6.5M supported by Adams Capital Management, Inc. and Northwater Capital Management, Inc.
Private Equity (2015): $1.1M featuring Adams Capital and Northwater Capital
Other Financing Round (2020): $1.1M, investors not publicly disclosed
Debt (2020): $150K with participation from PPP
Debt (2021): $284K led by PPP
Private Equity (2023): $30M, investors not publicly disclosed
Private Equity (2026): $501K, investors not publicly disclosed
Key Investors in LiquidPiston
Adams Capital Management, Inc.
Adams Capital Management, Inc. is a Pittsburgh-based venture capital firm focused on early-stage applied technology investments. Established in 1994, the firm has a history of backing innovative technology entrepreneurs and management teams, leveraging its expertise in information technology and networking infrastructure to foster market leadership in its portfolio companies.
Northwater Capital Management, Inc.
Northwater Capital Management, Inc. is an entity involved in the funding landscape, with a noted participation in LiquidPiston's financing rounds. Their involvement suggests a strategic interest in companies developing advanced technologies, potentially aligning with their investment thesis in innovative sectors.
What's next for LiquidPiston?
The substantial enterprise-level funding and recent strategic investment indicate that LiquidPiston is poised for significant scaling and market penetration. This capital infusion will likely accelerate the company's research and development efforts, enhance manufacturing capabilities, and expand its market reach into key sectors such as defense, aerospace, and emerging mobility solutions. The company's focus on high-efficiency, low-emission engine technology positions it favorably to capitalize on global trends towards more sustainable and powerful propulsion systems. Future growth may involve strategic partnerships, further product development for diverse applications, and potentially broader commercialization efforts.
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