Member - Cool Energy, Inc.

Powering a Clean Tomorrow: Cool Energy makes the 25kW ThermoHeart Engine, converting wasted heat into clean electricity.

Type Startup or self-employed
Founded 2006
Company Size 6
Member Type
Founders Sam P Weaver
Headquarters Boulder, CO 80301, USA
Social network
Cool Energy, Inc.


Imagine an on-site power system that uses only the free fuel of wasted heat to generate electrical power, day and night, all year long. Now imagine that the same core heat engine technology can also be used to capture energy from the exhaust gas stream of diesel and natural gas generators to generate clean electricity, improving their efficiency. The ThermoHeart Engine from Cool Energy is a generator which can use medium-temperature heat from any source to produce on-site electricity. It is specifically designed to be high-efficiency at these sub-combustion temperatures. These engines can also be used in solar thermal power generation, biomass power systems, and generating electricity from LNG re-gas operations, without consuming any of the natural gas in the process.
Headquarters Boulder, CO 80301, USA

SDG’s of application

The Sustainable Development Goals are a call to action to end poverty, protect the planet and ensure peace and prosperity everywhere.
Clean water and sanitation
SDG 6 icon
Affordable and clean energy
SDG 7 icon
Industry, innovation and infrastructure
SDG 9 icon
SDG 11
Sustainable cities and communities
SDG 11 icon
SDG 12
Responsible consumption and production
SDG 12 icon

Efficient Solutions

Labelled Solutions from Cool Energy, Inc.

The Solar Impulse Efficient Solution label seeks to bridge the gap between ecology and economy, bringing together protection of the environment and financial viability to show that these solutions are not expensive fixes to problems, but rather opportunities for clean economic growth.

The information set out above, is solely for the purposes of information and the Solar Impulse Foundation does not provide any guarantee as to its authenticity, completeness or accuracy. To validate the Membership to the World Alliance for Efficient Solutions, the Solar Impulse Foundation only verifies that each entity is registered and has signed our principles and values stated in the following World Alliance for Efficient Solutions charter. For those Members who are also solution providers, this information does not constitute investment advice or a recommendation to buy into, transact or to enter into any agreement with any of the parties or persons mentioned above. Potential investors or interested parties are solely responsible for their investment or business decisions and for performing any due diligence required by the circumstances.