Léon Grosse
Discover how Léon Grosse is turning Climate Dividends in a competitive advantage and help their clients accelerate decarbonization in the construction sector.

Léon Grosse
Founded in 1881 in Aix-les-Bains, France, Léon Grosse is one of the country’s leading construction groups, generating €720 million in revenue and employing nearly 2,300 people across mainland France and the overseas territories. Building on more than a century of expertise in construction, the Group has strategically expanded into energy renovation, façades, heritage restoration, and real estate, delivering comprehensive solutions for sustainable and intelligent urban development.
Its subsidiary IRIS, specialized in energy renovation of occupied housing and residential buildings, has already implemented avoided emissions calculations using Climate Dividends.
Motivations to join
Olivier (Léon Grosse Group):
As a company committed to reducing the environmental impact of our activities, we aim to support our clients in accelerating the decarbonization of the construction sector. This is particularly the case at IRIS, our residential renovation business. We have implemented the calculation of avoided emissions using the Climate Dividends methodology.
Measuring avoided emissions on our renovation projects enables us to act as a proactive partner for our clients. It allows them to arbitrate between different alternatives and to manage the euro-carbon cost of their projects.
Marc (IRIS):
In new construction, carbon emissions have long been measured. Until recently, this was not the case in housing renovation. Today, the entire renovation value chain is keen to identify low-carbon indicators, notably through IRIS, the Léon Grosse Group brand dedicated to the energy transition of housing.


Measuring Impact in Renovation
Marc:
We measured the effectiveness of our approach using the Climate Dividends methodology. This initial pilot enabled us to quantify tangible results, with almost 4,600 tonnes of CO₂ avoided across just three of our housing renovation projects.
Benefits of using Climate Dividends
Don’t be "reduced" to your sole carbon footprint anymore. Prove your climate contribution through a standardized Protocol and a transparent and audited process.
Our experienced team supports you through the removed or avoided emissions assessment and we provide dedicated resources and tools - sectoral methodologies, use cases, Excel templates…
Communicate and report your positive contribution to global decarbonisation to external and internal stakeholders without the risk of being accused of greenwashing. Strengthen your brand image with a strong communication asset.
Use Climate Dividends as solid proof of your climate performance to attract impact investors more easily (easier environmental due diligence) and to lower your cost of capital (green bonds, lower banking fees).
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Companies and investors from all over the world already use Climate Dividends to measure and value their contribution to global decarbonisation. Don’t wait to join them in the initiative!