Funding Received
$66.5 Million in 3 Rounds from 5 Investors
Most Recent Funding
$35.2 Million Series C on October 9, 2013
San Diego, CA
Achates Power develops internal combustion engines for passenger and commercial vehicle transportation industries.
James Lemke
Clean Technology

Company Details


Achates Power has developed radically improved internal combustion engines that increase fuel efficiency, reduce greenhouse gas emissions AND are lower cost. Founded in 2004 with the mission to build better, more efficient engines, the company has over 50 employees, almost all in-house engineers and scientists focused on applying their proven technical know-how and expertise, coupled with the industry's leading-edge testing, simulation and analysis tools.

The Achates Power opposed-piston, two-stroke, compression-ignition engine is key for the future of clean, efficient and cost-effective passenger- and commercial-vehicle transportation.

Clean - Can comply with the toughest emissions standards in the world - EPA10 and Euro6 - Reduces greenhouse gas emissions

More Efficient - Eliminates cylinder head, which reduces heat loss - Eliminates valve train, which reduces frictional loss - Has a breakthrough combustion system - Has an advantageous stroke/bore ratio

Lower Cost - Has fewer components - Uses less raw material - Uses conventional materials and manufacturing processes

Lighter - Has a smaller displacement - Eliminates components like the valve train and cylinder head

To date, the engine has demonstrated a fuel efficiency improvement of more than 20 percent compared to the published performance data of one of the best clean diesel engines (approximately a 55 percent improvement relative to comparable gasoline engines).

Current Team (3)


Board Members and Advisors (1)


Investors (5)


Offices/Locations (1)

  • Office

    4060 Sorrento Valley Boulevard

    San Diego, CA 92121