Vincent Legrand

Ashoka Fellow
Fellow Since 2014


This profile was prepared when Vincent Legrand was elected to the Ashoka Fellowship in 2014.
The New Idea
Contrary to all of the existing efforts focused on incentivizing demand, Vincent is pioneering a large-scale operational approach to structure the supply of thermic renovation for individual houses and to open this untapped market. The DORÉMI solution relies on a two-pronged strategy: 1) train independent builders on sustainable renovation techniques and 2) group them locally to better negotiate with materials’ manufacturers, and package a simple, global renovation offer to homeowners at a reasonable cost. Having an effect on the supply chain, Vincent unlocks the market: builders reduce their costs and are willing to explore sustainable renovation as a new economic opportunity; owners have access to a simplified, reasonable-cost offer; and a maximized environmental impact is generated by replacing incremental renovation with a global renovation process.

Facing the need to reduce energy bills, dependence on fossil energies and greenhouse gas emissions, local authorities are tasked with energy transition but don’t have an operational solution. Vincent engages them to leverage the DORÉMI solution and to scale it. Indeed, by making regional authorities the project owners, he builds trust in the model by guaranteeing its independence from private invested interests. Consequently, he gets buy-in from the various stakeholders – from builders and material manufacturers to home owners. Partnerships with local authorities also enable external stimulation of the demand, while giving Vincent the financial resources and legitimacy to train the builders and oblige them to lower their prices as much as possible. With DORÉMI, regions overcome the complexity of the issue and support a highly efficient solution for the environment, reducing heating consumption by 4 to 6 times.

Positioning DORÉMI as national-scale solution right from the start, Vincent is not only piloting regional testing. At the French and European levels he is demonstrating the economic potential of his solution to shift from our fossil fuels-based model towards renewable energy in order to enact new legislations and achieve energetic transition by 2050.
The Problem
The Strategy
The Person

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