Evaluation Framework

The evaluation method defines the calculation methods for indicators relating to a building’s energy consumption and environmental performance, notably including greenhouse gas emissions.
The economic impact of the technical choices made by property developers in order to attain various performance levels for Positive Energy & Low Carbon buildings is assessed via an economic evaluation.

Scope of application

Evaluation method – areas of application

  • for construction operations involving new buildings, whose usage is described in article R.111-20-6 of the French Construction and Habitation Code
  • from the time the building receives final approval.

    • The method may be applied during other phases of the construction project, but an updated calculation will need to be made once the building is given final approval in order to refresh the provisional results.

Area of evaluation

The evaluation method allows users to calculate the energy and environmental performance indicators for a given construction operation under the responsibility of a single property developer.

Definitions
  • A programmatic entity is a series of spaces in the same construction project, all falling under the responsibility of the same property developer.
  • A construction operation may refer to an entire building, or part of a building comprising a programmatic entity.


The area of evaluation is the area indicated in the construction permit.

The evaluation:

  • is therefore applied to the building and its land plot, including: exterior construction, connections to networks and roadways, electricity production in adjacent spaces, etc.
  • may also apply to several buildings if all are covered by the same building permit.

Total consumption

Takes into account all sources of energy consumed by the building when in use;

For energy consumption by regulated sources (heating and air conditioning, hot water, lighting, ventilation and accessory elements)

The regulatory calculation method Th-BCE 2012, defined in a ministerial decree issued on 20 July 2011, should be taken into account


Energy consumption through non-regulated sources (energy consumption by equipment and devices on the property not covered by the RT2012, such as elevators, lighting and ventilation of parking areas, etc.)

The method is defined in the “Energy/Carbon – Evaluation Method for Energy and Environmental Performance and New Buildings” reference framework.

Note:

  • The environmental impact of equipment and devices linked to specific forms of consumption (electrical-domestic appliances, office equipment, etc.) are not accounted for in this evaluation method, aside from the impact of their electricity consumption (initially calculated according to the method used to determine internal input for the Th-BCE method).
Reference Period for Environmental Calculations

In order to carry out an analysis of the building’s life cycle, it is necessary to determine the period after which the building will be demolished. As a rule, this period is considered to be 50 years for all buildings.

Entry Data

The evaluation method distinguishes between three types of data:

  • specific data,

Opposable data for which an operator is responsible for collecting and updating


  • standardised generic data

Data used to substitute for specific data, where the latter is unavailable


  • conventional data

Data values which must be used in all cases

Energy Data

Conventional entry values pertaining to climate data and the occupation and use of buildings are taken from the Th-BCE regulatory evaluation method.

Note:

Environmental Data

  • Specific data

For equipment and products used in construction

  • FDES – Environmental and Sanitary Declaration Forms: individual or collective
  • PEP – Product Environmental Profiles: individual or collective

    • for equipment covered by the RT2012, data provided in PEPs for the use phase is not applied


  • Generic default Data

For equipment and products used in construction

  • MDEGD – Standardised Generic Environmental Data Modules – data made available by the government ministry responsible for construction.


  • Conventional Data

Data pertaining to simplification of models
Energy impact data
Service data (transport, potable water, waste water, waste, refrigerants)

Notes:

  • All this data is freely available via the INIES database
  • For more information, consult the “Carbon Energy – Evaluation Method for Energy and Environmental Performance and New Buildings” reference framework.

Calculation of Energy and Environmental Performance

Approach used to establish environmental performance levels

The calculation method uses two approaches for the calculation of environmental performances:

  • a simplified approach, making it easier to assess the building’s environmental impact
  • the work items with the least environmental impact (“products and equipment used in construction”, based on feedback from HQE Performance tests in 2011 and 2012) may be completed using standard maximum values issued by the ministry in charge of construction
  • simplified calculation formulae are suggested for the calculation of “work site” and “water consumption and waste water” contributors


  • a more detailed approach, allowing exemplary developers to highlight their environmental efforts
  • Detailed calculation for all work items

Energy calculations and calculation engine

Calculations of building energy performances are carried out using a calculation engine provided by the ministry responsible for construction, supplementing the current engine used for regulatory calculations.
The calculation engine provided only allows for the calculation of an energy performance level, with an annual calculation for:

  • calculation of energy consumption by non-regulated equipment or devices,
  • the self-consumption calculation.