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Ans swimming pool

Schréder 'LED controlled by nature' solution cuts energy consumption by 67% and offers an return on investment in less than 4 years

The new swimming pool in Ans has been designed with a large south facing bay window to take full advantage of natural daylight. However the Belgian climate and long opening hours means that the swimming pool also needs indoor lighting. The Schréder “LED controlled by nature” solution was ideal for this building as it maximises daylight while balancing artificial light to ensure comfort and safety at all times with a dramatic reduction in energy costs and CO2 emissions. 

  • Project description
  • Interview with Philippe Remmo - Director of AnSports
  • Interview with Stéphane Moreau - Mayor of Ans

Ans swimming pool

After having initially considered renovating the former swimming pool which had been built 40 years ago, the town of Ans decided to build a completely new building located next to the E40 motorway, one of the most heavily used transport routes in Europe.
The new swimming pool consists of an administrative building, a reception area, changing rooms, technical facilities and two pools of 25 x 15 metres and 15 x 15 metres respectively.
Its primary purpose is educational, with school children making up most of the visitors during the day. Several aquatic sports clubs also use the facilities in the evening.

The building was designed by the French architect Jean-Michel Ruols in collaboration with Delphine Bodin, the architect for the town of Ans.
Functionality, aesthetics and operational costs were the driving factors in the design.
The well-being of users and the long life of the facilities were also critical factors in the technical choices, such as the stainless steel pool linings.
The absence of joints is a major bonus for maintenance and water-tightness in the long term.
Stainless steel also offers hygienic benefits as fewer chlorinated products are used to keep the water clean.
The building was designed to reduce costs in the long term with particular attention paid to energy consumption.
The choice of an LED lighting solution was logical for reducing operating costs and minimising the environmental footprint.


The Schréder 'LED controlled by nature' solution

Benefiting from a large south facing bay window, the building is designed to be bathed in gentle natural light.
Nevertheless, the temperate climate in Belgium and the pool's long opening hours (from 9am to 7pm or 10pm from Tuesdays to Saturdays) means that a significant amount of artificial lighting is required to achieve the average lighting level of 600 lux throughout the 1200 square metres of floor space at all times.

Schréder offered an 'LED controlled by nature' solution consisting of 36 OMNIstar luminaires (144 LEDs), four luminosity sensors and a control system. The control system interprets the data received from the sensors and transforms it into DALI commands to adapt the intensity of the lighting automatically based on the natural ambient light.
Discreetly integrated into the architecture, the lighting solution proposed by Schréder cuts energy consumption by 67% compared with a conventional installation.
Based on the energy consumption alone and not taking into account the maintenance gain, Schréder's solution offers an return on investment in less than four years.


After several months of activity, AnSports, the public corporation in charge of operating the swimming pool, is completely satisfied. Although equipped with a manual mode, the lighting system continually operates in automatic mode as it guarantees the required lighting levels and uniformity at all times.
Never overlit - but never underlit either - Ans swimming pool provides a comfortable environment for users while only consuming the energy that is absolutely necessary.
As the variations in lighting intensity are subtle and progressive, they are imperceptible. They do not intrude in any way on the activity of the staff and swimmers - who can thus make the most of their leisure activities in a perfectly lit setting.

Philippe Remmo discusses the lighting for Ans swimming pool







Philippe Remmo
Director AnSports

"With the LED solution proposed by Schréder, our lighting installation pays for itself in less than 4 years."

You opted for a 100% LED solution. What prompted this decision?
This choice emerged gradually as the technology evolved. At the start of the project, there was no real talk of professional lighting using LEDs. And even less so of varying the intensity of light using sensors! We were considering a conventional solution. As there are no competitions, the focus is on enabling the lifeguards to do their work, i.e. to teach people to swim and ensure safety in the best of conditions.
Traditional HID spotlights consume a lot of energy and give off a huge amount of heat. In a well-insulated building, this gives rise to heating problems that need to be managed. Over time, these two criteria prompted us to think about LED lighting. But at the time that the initial budget was drawn up, it would have taken 10 years to recover the cost of such an installation, which corresponded at that time to the lifetime of the LEDs.
Between this initial budgetary plan and the final decision, the technology had progressed. With the LED solution proposed by Schréder, our lighting installation pays for itself in less than 4 years. The advantages were obvious to us: energy efficiency, long service life, limited heat emission and a technology in tune with the modern look of our facilities.

The installation incorporates an autonomous intensity variation system controlled by lighting sensors. Why did this solution capture your interest?

We were immediately won over by this approach that is based on the synergy between natural and artificial light to provide good uniform lighting throughout the pool area. This fully automated solution enables energy savings to be made while guaranteeing the same conditions of comfort and safety for the staff and users at all times of the day and evening, whatever the season. The system is also integrated into our overall automation infrastructure which controls the building. Our real objective was to reduce energy consumption.


What are the initial results several months after the opening of the swimming pool?
We only have positive feedback regarding the installation. The users find the environment very pleasant, with an ideal temperature, air renewal, no characteristic smell of chlorine and subtle lighting. The number of people coming to the pool has increased by 25% compared to the old pool.  

Stéphane Moreau, Mayor of Ans talks about the new LED lighting scheme















Stéphane Moreau
Mayor of Ans 


"By providing such an infrastructure, Ans is showing itself to be forward thinking and, as such, mindful of

energy consumption and costs."

How important is this new swimming pool for the town of Ans?
From a social perspective, the swimming pool is undoubtedly an essential facility in our community. Whether people want to learn to swim, practise sports or go for leisure, the swimming pool has become a place that regularly attracts many families.
For a town such as Ans, which has a little over 28,000 inhabitants, the construction of a swimming pool is obviously a major financial investment. The construction costs were 7 million Euros, requiring a return on investment of almost 335,000 Euros a year for the town.

The modern architecture of the building and the technical choices clearly anchor this sporting facility in the 21st century. What does this modernity bring to the users and to the town?
The architecture of the swimming pool with its fluid lines creates a talking point in the town. Its clean and contemporary style gives Ans a positive, dynamic image. The objective is also to create a positive experience for swimmers, so that they enjoy using the pools. As for modern technology, we opted for quite a few but I will give two main examples. By providing such an infrastructure, Ans is showing itself to be forward thinking and, as such, mindful of energy consumption and costs. One example of this is the lighting that has been optimised with this in mind.
The regulations in Wallonia require the water to be purified and purifying. This means that chlorine is indispensable to satisfy these hygiene standards. Of course, this has a positive effect for the hygienic quality of the water, but also a more negative aspect for the swimmers' respiratory systems.
The development and implementation of modern technologies - the lining of the pools entirely with stainless steel and the UV filtration system for example have enabled the amount of chlorine to be substantially reduced. 

This is the first time you have chosen LED lighting for one of the town's sports facilities. What were the arguments that won you over to the solution proposed by Schréder?
LEDs are an obvious choice today. The technology has vastly improved in terms of lighting efficiency and offers the huge advantage of being less of a drain on resources. LEDs are also entirely in keeping with the architecture of the building due to its innovative, modern nature.
Schréder's solution was proposed to us by the company that successfully bid for the construction contract and the town approved it because it met the desired objectives of quality, efficiency and cost-effectiveness. 

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