21TDMC is rated 3 out of 5 in the category renewables & environment. Read and write reviews about 21TDMC. 21TDMC | THE MOST ENERGY EFFICIENT MOTOR IN THE WORLD 21st Thermodynamic motor company is an emergent energy technology startup in stealth mode. A highly efficient engine, The Pentti, and our completely new technology is on the way to change the power generation.
Company size
1-10 employees
Headquarters
Helsinki, Southern Finland