Sustainable Development


Green lease

“Green lease” is the name given to an environmental amendment imposed by Article 8 of the “Grenelle II” law on leases entered into or renewed on or after 1 January 2012 (retail and office spaces over 2,000 m²) According to this amendment the owner and the tenant must exchange information relating to the energy consumption of the leased property. The tenant must provide access to leased premises for the execution of energy performance improvement work.


“Bâtiments Basse Consommation” (Low Consumption Buildings) are buildings which achieve very high levels of energy performance with an index value of around 50 kWh/m2 (according to Ministerial Decree of 8 May 2007, defining the energy performance values of new constructions). They are classified as A on energy performance diagnostics labelling (DPE). A label sanctions new constructions achieving these performance levels.

Bilan Carbone®

A technique invented by ADEME (Environmental and Energy Monitoring Agency) to monitor the greenhouse gas emissions associated with an activity using readily available data. This allows an enterprise or a company to assess their levels of direct or induced emissions. One of the goals of this is to design and implement plans for reducing these emissions.


The “Haute Qualité Environnementale” (High environmental Quality) of a building refers to the ability of the intrinsic characteristics of the building, its installations and the plot to satisfy requirements in terms of external environmental impact and the creation of a comfortable and
healthy internal environment. The HQE® approach is designed to improve the environmental quality of new and existing buildings with the aim of offering healthy and comfortable buildings which have a minimum environmental impact over its whole lifespan. This is a multi-parameter approach which is based on the fact that: above all a building must, above all, meet the needs of the people using it and ensure an adequate quality of life.


The "BRE Environmental Assessment Method" was developed by BRE, and is the oldest and most commonly-used standard in the world. BREEAM is the reference standard for sustainable construction and has become the de facto assessment method used to describe the environmental performance of a building.


The most recent of the energy standards, Effinergie® is a designation which is designed to identify new buildings with very low energy consumption (“Bâtiment Basse Consommation” under the Ministerial Decree of 8 May 2007). For new residential constructions the goal of the Effinergie® standard is achieve a maximum primary energy consumption level of 50 kWh/m² per year (varies depending on the region). For other types of buildings including office buildings conventional primary energy consumption for heating, air conditioning, ventilation, hot water production and lighting must be equal to or lower than 50% of conventional energy consumption levels defined in the RT2005 standard. Effinergie® is promoted by the association of the same name.

Renewable energy

This term refers to all energy produced using renewable resources, as opposed to that produced using fossil fuels which are produced using finite resources such as oil. There are 5 main families in this category: wind energy, hydro-electric, biomass, solar photovoltaic, geothermal and waste product combustion.

Grenelle Environnement

The “Grenelle Environnement” refers to a series of political meetings organised in France during September and October 2007 dealing with long-term decisions involving environmental issues and sustainable development, and in particular to restore biodiversity through the establishment of green and blue belts and regional ecological coherence plans, at the same time as reducing greenhouse gas emissions by improving energy efficiency. The “Grenelle II” law is the French law which completes, applies and territorialises a law passed the previous year called “Grenelle I”, it was adopted in 2009 and includes a large number of technical measures covering areas such as construction, urbanisations, transport, climate/energy, biodiversity and health.


The “High Energy Performance” label provided for by Article R.111-20 of the construction and building code attests to the compliance of new buildings to a standard which covers thermal regulation requirements, compliance with an overall energy performance level exceeding regulatory requirements and minimal control methods. To be awarded the HPE label, conventional primary energy consumption must be at least 10% lower than the RT 2005 reference consumption level.


An American certificate which covers energy saving and user comfort. This system is fairly similar to the HQE system. Several certification levels (standard, silver, platinum and gold) exist and distinctions are made between commercial property and housing and new constructions and existing constructions.

Building energy performance

As per the meaning of the European Directive, the energy performance of buildings is the amount of energy actually consumed or estimated to be consumed to meet the needs under standard usage, which may include, among others: heating, hot water, air conditioning, ventilation and lighting. The Ministerial Decree of 8 May 2007 stipulates the regulatory requirements for 5 levels of energy performance in new constructions: HPE, HPE EnR, THPE, THPE EnR and BBC.


The “Très Haute Performance Energétique” (Very High Energy Performance) label certifies that a building complies with an overall energy performance level greater than regulatory requirements which can be verified using minimal control methods. To be awarded the THPE label, conventional primary energy consumption must be at least
20% lower than the RT 2005 reference consumption level.
Altarea Cogedim