What is STAX Engineering?
STAX Engineering specializes in developing and deploying patented, flexible exhaust capture systems for ships. Their innovative technology is designed for universal application, fitting all vessel types without modification, even in the most challenging port environments. The STAX system effectively captures and filters exhaust gases, removing 99% of particulate matter (PM) and 95% of oxides of nitrogen (NOx) before releasing purified air. To date, the company has treated 426 at-berth vessels, accumulating over 13,000 operational hours and preventing the release of 100 tons of pollutants, with ongoing expansion.
How much funding has STAX Engineering raised?
STAX Engineering has raised a total of $110M across 2 funding rounds:
Other Financing Round
$40M
Other Financing Round
$70M
Other Financing Round (2024): $40M with participation from Upper90
Other Financing Round (2025): $70M led by Deutsche Bank and Firstime Ventures
Key Investors in STAX Engineering
Upper90
Upper90 is a hybrid investment firm that provides tailored debt and equity solutions to technology startups with predictable revenue or collateral, focusing on capital-intensive businesses and offering credit facilities to help founders retain ownership and finance growth.
Deutsche Bank
Deutsche Bank Aktiengesellschaft provides corporate and investment banking, private clients, and asset management products and services, offering risk management solutions, cash management, trade finance, and lending, as well as merger and acquisitions and foreign exchange advisory.
Firstime Ventures
Firstime Ventures is an investment firm focused on supporting companies creating a sustainable and accessible future, investing in entrepreneurs developing impactful products that address global challenges such as climate change and food security, with a portfolio including over 30 climate-tech startups.
What's next for STAX Engineering?
The substantial enterprise-level backing and recent strategic investment position STAX Engineering for significant scaling and market penetration. This capital infusion is anticipated to fuel further research and development, enhance manufacturing capabilities, and expand the company's global operational footprint. STAX's focus on providing a critical environmental solution for the maritime industry, particularly in addressing stringent emissions regulations, suggests a trajectory towards becoming a leader in clean shipping technology. The company's ability to secure such significant financing indicates strong investor confidence in its technology and its potential to address a pressing global environmental challenge.
See full STAX Engineering company page
