Member - STEPSol

STEPSol proposes an innovative storage solution, sustainable and competitive for isolated areas, the Hydraulic Battery!

Type Company
Founded 2016
Company Size 6
Member Type
Founders Didier Pierrat-Agostini
Headquarters 20217 Nonza, France
Social network


STEPSol is a Corsican start-up founded on September 30th, 2016. We develop a hydraulic storage solution coupled with a solar production, to supply green electricity through day and night, to rural territories or isolated zones. We aim at developing sustainable and responsible projects, in accordance with communities and their surrounding environment, by considering local specificities and electrical grid constraints. Furthermore, the hybrid system developed by STEPSol goes beyond a simple green electricity production: it creates additional benefits to the people who host the installation. Principle of our “Hydraulic Battery” The solution developed by STEPSol combines the simplicity and rusticity of pumped hydro storage PHS, with a smart management of sun and water. During the day, solar panels power a village but also a pump which brings the water from a lower tank to an upper tank. When night falls, or when the electrical demand is too important, the water goes down and activates a turbine, which will produce electricity and compensate the lack of solar energy. Water acts as a “hydraulic battery”: it makes the solar production fully controlled and flexible.
Headquarters 20217 Nonza, 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 STEPSol

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.