Member - Gouach

Gouach is manufacturing the first repairable and renewable electric battery, cutting down costs and CO2 emissions

Type Startup or self-employed
Founded 2018
Company Size 12
Member Type
Founders Alexandre Vallette
Headquarters 33000 Bordeaux, France
Social network


Our study on hundreds of small scale lithium-batteries showed us that 80% of the lithium-ion cells are actually discarded while they are perfectly functional. This waste is due to the fact current lithium-ion batteries cannot be repaired due to their fabrication process. We designed and patented a battery with no soldering, no paste and no wires, which makes it easy and convenient to service and repair in a few minutes. The consequences are : - an increased lifetime, and thus a reduced cost of operation for the user - a reduced ecological impact as individual lithium-cells can be changed throughout the battery life (about 70% less carbon emission) - a much improved battery, with electronics offering new functionalities like bluetooth connectivity, data collection, long-life mode, etc, that would have been too expensive for current disposable batteries
Headquarters 33000 Bordeaux, France

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 Gouach

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.