© Nicolas Fussler

Improving our energy efficiency

In view of the strategic, socioeconomic and environmental challenges posed by reducing energy consumption, Eiffage is developing an energy performance policy aimed at improving the services it offers while also optimising its own energy performance. 

Certified energy performance

The action plans drawn up by the divisions in recent years are now integrated into real certified energy management systems.

At the end of 2015, Eiffage Energie, Clemessy and Eiffage Route obtained             ISO 50 001 certification. This mark of approval confirms their commitment to continued progress in this area.

Clemessy ISO 50001

ISO 50 001 Clemessy certification
 

Clemessy secured ISO 50 001 certification for two of its subsidiaries, Clemessy SA and Secauto. In both cases, the scope of this certification covered all vehicles and a number of building for both entities. The goal is now to extend this approach to all establishments by 2018.

Following renovation work to improve the weathertightness of one of the roofs on the Mulhouse site, various ambitious actions are underway, including the study of a project to install a photovoltaic plant. Consisting of 690 solar panels (on 1,380 sq. m of roofing) and seven inverters, this plant will deliver a power of 210 kWp for onsite consumption.

Centrale Enrobés Alpins
Alpins coated aggregate plant - Contamine sur Arve - Eiffage ©Actophoto Régis Bouchu
 

Eiffage Route secured certification for 56 coated aggregate units and 13 binder plants scattered throughout its territory. The objectives set by Eiffage Route for this procedure included fostering energy-saving behaviour, carefully managing energy consumption, optimising installations, enhancing processes and equipment, purchasing economical services and stepping up the production of warm coated aggregates. In addition to requiring the large-scale mobilisation and commitment of all personnel at all levels, this campaign called for detailed knowledge of process consumption data and the management of specific points where energy is wasted.

Energy management systems are now being gradually rolled out for material extraction sites. An example well worth watching is the Roches Bleues quarry, a standard-bearing site that has been ISO 50 001 certified since 2014.

Since December 2015, Eiffage Energie Gestion et Développement has been ISO 50 001 certified for the energy management of its sustainable design, operation and maintenance activities at its plants. All Eiffage Energie entities will benefit from this new nationwide, multi-site certification. Having been awarded for four pilot sites (Saint-Denis, Corbeil-Essonnes, Pessac and Verquin), this certification will be applicable to all the company’s sites.

Focus

A comprehensive energy efficiency approach

To take up the challenges of the 21st century and assist its customer with their energy transition, Eiffage Energie decided in early 2014A to step up its actions targeting energy transition. The four approaches adopted in 2015 – focused both internally and externally – provide an ideal springboard to achieve its goals in terms of energy transition and assistance for customers.

Setting up an energy management system is a key part of the company’s comprehensive energy efficiency approach. It was notably for that reason that Eiffage Energie wished to secure ISO 50 001 certification, both for its own property and for structures it operates on behalf of its customers, such as for schools in the context of the energy performance contract, in the Centre region of France, and cogeneration installations.
In-house, steps that had to be taken to set up continuous energy performance improvement systems that were certified at the end of 2015 included acquiring an energy assessment methodology, boosting the expertise of personnel to operate installations, training internal auditors and raising the awareness of users.

Energy challenges

Independently of its certification-related action, the Group continued its campaign to improve energy performances.

The technical guide on climate published by APRR and AREA in 2014 concerns not only the operation of motorways but also the construction of new sections. Its recommendations are now systematically applied in new projects, such as for the toll barrier on the A466 motorway north of Lyon. This toll, commissioned in June 2015, is also equipped with the latest technological innovations in lighting installed under the canopy roof and in the open plaza area.


Toll on the A466 motorway © Eiffage Group

The operating equipment replacement programme for 2012-2016 notably includes the transition to LED technology for lighting small rest areas, which has generated a 30% reduction in energy consumption per year, and the installation of highly energy-efficient lamps with a 10-year life span instead of the previous three to four years. The use of astronomical clocks with voltage regulators can generate electricity savings of 10-30% in large rest areas. Appropriate consumption ratios (kWh/value unit) are determined and assigned to the various distribution points, making it possible to detect consumption anomalies and seek their causes.

In 2015, AREA tested the solar heating of water for the washbasins provided for its customers in toilets. Three renovated toll stations and a renovated rest area have been equipped with spherical tanks producing warm water, even in overcast weather. Six other rest areas will be similarly equipped as new sanitary facilities are brought into service.
Nearly 1,350 items of fixed equipment on the APRR and AREA motorway network are supplied with power provided by photovoltaic cells or mini wind turbines. These are mainly emergency telephone stands, weather stations, service gates, signboards and some operations cameras. APRR and AREA are also gradually acquiring trailer-mounted variable-message signboards power-supplied by solar panels, with generator sets being used in back-up mode only.

Good results have been obtained from toll canopy roofs fitted with photovoltaic panels at the Arlay and Seynod-Sud toll stations on the A39 and A41 motorway, respectively. These installations produce an average of 30% of the power used at those toll stations.

peage arlay
Arlay toll station ©APRR

The infrastructures division's 2012-2015 sustainable development action plan targets the careful use of energy resources and limits on greenhouse gas emissions. A national effort to modernise coating and binder facilities is underway, the use of EBTs (low-temperature coatings) continues to grow, and a standardised policy for monitoring the performance of extraction sites is being deployed by Carrière’s new industrial department. Shared key performance indicators are optimising the management of natural resources while ensuring improved energy management.

Eiffage Métal modernised and standardised all of its machinery. Networked equipment with 3D capabilities now creates a digital link between the design office and shop.

Eiffage Construction’s network of energy engineers, created in 2011, works to develop synergies between the regional divisions. In 2014, the Energy department joined the ranks of the Technical department to form a new Energy-Work Packages department. By bringing together these two businesses, the company achieved greater consistency by managing all aspects of energy optimisation. In early 2015, the network organisation will monitor the department’s development by bringing in Work Packages specialists with the aim of upgrading skills and enhancing synergy between teams.

Focus
stage interregional

 

At Eiffage Construction, four working groups focused on managing energy performance were set up at the 2015 inter-regional training event. Experience-based feedback and the study of best practices were harnessed to draw up awareness-raising, simply-expressed, explanatory documents on this topic including, notably, a worksite awareness guide on the subject of “commitment and actual consumption”. Correct implementation of construction methods will certainly have an impact on the future consumption of the building industry. This guide is intended to be straightforward and practical to promote the awareness of teams working in the field