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Legendre Energy, actively involved in energy transition in France and abroad

Created in 2007, Legendre Energy brings together all energy-related activities of the Legendre Group (€660 million – 2,100 employees).

Founded on the belief that renewable energy production and consumption control are the solutions to our reliance on fossil energy resources, Legendre Energy works hand-in-hand with the group’s other two business lines, i.e. construction and real estate.

As a result, the creation of Legendre Energy strengthens the company’s strategy by integrating energy efficiency into all projects.

Legendre Energy, with a registered office at La Mabilay in Rennes (France), currently employs approximately fifty people.


The company boasts more than 600 references and works with a variety of clients:

  • Local authorities
  • Businesses
  • Industries
  • Hypermarkets and supermarkets
  • Medical professionals
  • Farmers
  • Homeowner associations
  • Energy producers

Energy is at the heart of buildings and territories

The energy sector is undergoing actual changes, with the growth in the renewable energy market which is reaching full technological and economic maturity. The energy bill, which constitutes a substantial part of the operating costs of a building or infrastructure, is now fully integrated into a business strategy or into the budget of a local authority.

A comprehensive range of energy solutions for our clients

For more than ten years, Legendre Energy has committed to a clean economy by optimising the energy potential of our natural resources.

Legendre Energy has developed an offer dedicated to the development of new services to make buildings energy efficient. From design through to operation, down to construction and financing, the company provides its clients with a comprehensive, turnkey offer. To this end, Legendre Energy is structured around three business lines:

These three areas of expertise create actual solutions to manage energy as a whole and on the scale of a building, even a district: reduce, control consumption, and maximise the production of energy from renewable sources.

Key dates

December 2007

Creation of Armorgreen, a company 100% dedicated to renewable energies, by Pascal MARTIN. The Legendre Group is associated with this creation.

June 2012

Acquisition of the ESBIM company in Poitiers (86). Armorgreen is thus establishing a lasting foothold in Poitou-Charentes.

August 2012

Start of work on the Halle Pajol for the city of Paris (75), one of the largest urban photovoltaic power plants in France.

May 2013

Realisation of two major solar park projects in Foussais-Payré (85) and Cazaubon (32), led by SERGIES, a Local Mixed Economy Company based in Poitiers (86), responsible for developing electricity production from renewable energy sources in the Vienne department (86).

January 2015

Creation of Ener24, a subsidiary specialising in the operation and maintenance of renewable energy production plants and the technical management of buildings.

July 2015

Armorgreen becomes the Energy subsidiary of the Legendre Group.

April 2016

Commissioning of 10 megawatts of solar photovoltaic projects: ground-based power plant at Poiré-sur-Vie (85), the roof of the Sancoins cattle market (18) and the solar roof of the Autre Usine in Cholet (49).

May 2016

Achievement of Armorgreen’s first international steps with the creation of Armorgreen Algeria.

September 2016

Armorgreen becomes Legendre Energy and brings together all the activities of the Legendre Group related to energy.

December 2017

Commissioning of solar power plants at Toulouse-Blagnac Airport (1 MW) and the Eau de Paris’s reservoir (1.8 MW).

December 2018

Provisional commissioning of the solar power plant on the roof of the Nantes National Interest Market.