GeRiCi®, a tool for identify the climate vulnerabilities of a road section or structure

Climate change and road infrastructure: anticipating and planning to avoid the worst

Storm Damage

Egis was one of the first engineering design offices to develop a GIS tool (GéRiCi®) that can identify the climate vulnerabilities of a road section or structure and put forward preventive measures by priority level. This innovation, recognised both in France and abroad, places us firmly among the leaders of climate-related engineering. Since then, our experts have designed many other solutions, aimed at boosting our regions’ adaptation to climate changes already underway, as well as exercising our civic duty. We offer scalable techno-economic solutions that take into account the uncertainty of future climates and help inform future choices in terms of planning and urban development. For development projects, we offer climate resilience approaches that include testing their climate and energy behaviour between now and 2050-2100.

The example of the district of Algiers

voiture,With approximately 3 million inhabitants, the district of Algiers wants to increase its resilience to climate change and prevent the risk of natural disaster: floods, landslides, extreme periods of heat and cold, marine submersion and erosion, and water stress. Egis is assisting in this process by assessing its risks of vulnerability between now and 2030 and by developing action plans to increase its resilience to these risks.
Egis has identified the investment required to protect property assets, as well as assessing the cost of adaptation measures and making recommendations for strengthening institutions’ ability to manage the impact of climate change in the long-term and to cope in the event of a natural disaster. This includes raising the awareness of all local stakeholders, institutions, technical agencies, private individuals, and citizens, regarding the results of the research and the approach.

Other reference

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In Georgia, a road network that’s better equipped to deal with climate phenomena

Egis is providing technical assistance to the Roads Department to incorporate climate risk issues into maintenance

An underground data-centre in Saumur

Building on the past to develop in the future.

In a real first, this project uses the thermal characteristics of underground quarries to naturally cool servers without resorting to air conditioning. It’s a model that will have a direct impact on the data centre’s operating and investment costs, as well as its environmental footprint.

Project supported by the Pays de la Loire region, the Conseil Général du Maine-et-Loire and Saumur Agglo. Initiated by SOPRAF, it brings together a consortium of stakeholders: the agency Enia Architectes, the telecom operator Céleste, and the Elioth* and Critical Building pairing, both data centre experts.

datacenter_copy_ENIA Architectes _Consortium PRI Monde Souterrain

Data storage needs are continuing to grow. Owing to land availability, thermal inertia and security, the subterranean environment is the ideal place for meeting the ecological, economic and security challenges of the data centre activity.
To check and confirm the hypothetical energy savings, a prototype data centre with very low energy consumption is being developed in the underground tunnels of Saumur, which will use the physical and thermal characteristics of the underground environment in order to naturally cool the servers.

This project illustrates:

  • The ability of our teams to support operations related to data centres and more generally, to develop digital infrastructure for the regions.
  • The need to combine on-site physical instrumentation approaches with digital simulation technologies, to support more avant-garde projects.

Domestic hot water with Maxwell’s Demon

Prototype, production d'eau chaude, climatisation,

Elioth has developed an innovative and revolutionary design dedicated to secure water supply and the production of domestic hot water. The project involves a new architecture that “untangles” the hot from the cold in the water network while allowing the storage of these resources.
In many situations, especially when setting up site facilities or in precarious surroundings, the following issues are crucial:

  • How to secure water supply
  • How to have sufficient storage in case of network failure
  • How to ensure the sustainability of water availability in case of interruption to the power grid
  • How to have a source of passive pressure for transportation of fluids
  • For hot water production, how to produce in an efficient, pooled and inexpensive way
  • How to simultaneously reduce the risk of bacterial proliferation in network water
  • How to capitalise on this production of heat to reduce the cooling needs of autonomous systems (air source heat pump)

Using these modules, in a sunny area, daily hot water production would be in the order of 5000 litres of water at 50°C. The device has its own energy source: photovoltaic roof panels, a water-source heat pump or possibly wind turbines fuel pumps for storing water in two tanks,
The storage capacity also help to reduce, and even do away with, electrical storage; thus limiting investment and maintenance.


Maxwell’s Demon provides a robust and economical response to these fundamental challenges and provides a simple solution to urban resilience.

This project is exemplary because it foreshadows a new generation of urban objects and a new type of infrastructure. Just like the construction industry, which has taken the first steps by offering examples of positive energy buildings, the objective is to develop Positive Infrastructure. Maxwell’s Demon responds to the major challenges of water supply in developing countries, such as securing its availability. At the same time, the installation’s energy system provides efficient standalone production. Ultimately, Maxwell’s Demon is a simple and low-cost system whose technical and economic relevance lies in the availability of all of its components.

Study: Paris’s cooling needs in 2100

A prospective study on the future of cooling systems in Paris for the Urban Planning department of the City of Paris.

Study on the future of cooling systems in Paris: doing nothing would be costly scenario in terms of both energy and comfort © EliothThis project was about putting forward an approach that could limit the impact of cooling in the Paris area, based on a diagnostic review of the existing situation and a forward-looking approach to climate change (modelling based on the IPCC’s A2 scenario and the ARPEGE Climate model developed by Météo-France). “Doing nothing” is a costly scenario in terms of energy and comfort, and would create significant disparities between neighbourhoods. Phenomena like the “thermos effect” of recent buildings, along with the issue of releasing the heat generated by internal uses, were observed in particular.

It is possible to reduce cooling needs and choose cooling methods with lower impacts:

  • Densifying ground vegetation.
  • Choosing materials with high albedos (limiting the absorption of solar radiation).
  • Controlling anthropogenic heat generation.
  • Reducing internal heating in buildings.
  • Facilitating access to district cooling systems
  • Developing geothermal energy on shallow aquifers and energy geo-structures.
  • Relying on “thermal smart grids”.
  • Encouraging the development of alternative cooling systems for buildings.
  • Contributing to the sharing of feedback.

The study seeks to describe solutions at various levels, from individual buildings to the overall urban space, not to mention the essential awareness raising among stakeholders and users of the city.

WIND-IT An innovative solution for the micro-generation of renewable energy

An ecological alternative for countries where there is little or no network.

Expected benefits: about 85% of annual operating costs and approximately 70 t CE saved.

Wind-it _ Tibo d'Aboville

The Wind-it innovation consists of integrating one or more vertical axis wind turbines within a metal pylon that has been specifically designed to house wind turbines. The Wind-it range currently offers telecommunication towers for sites with no network or a poor quality network ranging from 25m to 80m high. The solution integrates a photovoltaic source adapted to the installation location. Wind-it helps to considerably reduce, and even avoid, the use of the more traditional and expensive solution of fuel-powered generators. Furthermore, the Wind-it solution is scalable in such a way as to produce surplus energy, thus contributing to local electrification.

WIND-IT received the 2015 Grand Prix National de l’Ingénierie (French engineering prize) in the category “Industry and Technology Consulting”. Find out more on the prize


Today, WIND-IT is a startup that offers power solutions for sites that are either off the grid or connected to an unreliable network, including telecommunications towers. Its first solution is a telecommunications tower with integrated energy production, through the incorporation of vertical axis wind turbines. For existing sites, Wind-it also offers turnkey hybrid energy solutions, combining multi-source energy production, including solar panels when necessary. Wind-it is also able to adapt to new demands, such as becoming an electricity supplier or developing rural electrification projects.


The first sales of energy-efficient telecommunication relay towers using wind and photovoltaics, Wind-it, were made with a telephone operator in Madagascar and with Orange in Luxembourg. These towers foreshadow new 100% renewable rural electrification solutions.

Find out more Lire l’article du journal Egis Contact International de juin 2016 (article en anglais) Madagascar: Launch of the first telecommunication tower integrating vertical wind turbines