Modular positive energy nursery

Last modified by the author on 07/08/2019 - 11:15
  • Building Type : Preschool, kindergarten, nursery
  • Construction Year : 2014
  • Delivery year : 2014
  • Address 1 - street : Rue du Cannet 34400 SAINT SéRIéS, France
  • Climate zone : [Csa] Interior Mediterranean - Mild with dry, hot summer.

  • Net Floor Area : 149 m2
  • Construction/refurbishment cost : 420 000 €
  • Number of Children : 9 Children
  • Cost/m2 : 2818.79 €/m2

Certifications :

  • Primary energy need
    136 kWhep/
    (Calculation method : )
Energy consumption
Economical buildingBuilding
< 50A
51 à 90B
91 à 150C
151 à 230D
231 à 330E
331 à 450F
> 450G
Energy-intensive building

Located on the outskirts of the village in an old vineyard, without any natural shade, this eco nursery is designed to welcome children even under the heat of the summer.

The idea was to create a large photovoltaic cold roof forming a large courtyard of 358m2 overlooking the buildings and its surroundings and the courtyard in the center. Curtains dressed with vines playing the role of vertical sunscreens of 6m high come close the faces of this canopy reserved for the smallest, and protected from solar radiation as well as bad weather.
Below, a set of "boxes" in local wood is the program that includes in addition to the 12 beds, a Maternal Assistant. It is planned to be able to create extensions by adding new "boxes" to increase the capacity to 20 beds.
This equipment is self-financing over a period of 15 years thanks to the revenues generated by the photovoltaic roof.

Sustainable development approach of the project owner

The town hall of Saint Séries wanted to be equipped with an eco-nursery building.

The architect proposed a construction including a production of renewable energy in adequacy with the SCOT. The architect also proposed a equipment built in local wood to be flexible and adapt to the increaing number of children from 11 to 20. The architect has proposed to vegetalize with the vine, the most common plant in the town bio-climatic facades of this equipment that have variable transparency summer / winter. 

Architectural description

The goal was to create a large courtyard of 358M2 to house a modular equipment and pavillonnaire dedicated to a nursery and a relay of maternal assistant. Located on the edge of the stadium, in an old vineyard and under the crushing Mediterranean sun this roof takes advantage of the sun while protecting the children and their crib from the direct solar radiation. Vertically curtained facades of vine all height make disappear the building in the landscape and ensure the summer cooling of the outer walls. this crib of 11 beds can easily go to 20 beds as needed by the addition of a "box" in additional wood under the yard.

If you had to do it again?

The difficult management of the PMI doctors who intervene on the project including in the construction phase because of their misunderstanding of the graphic and written documents produced as early as the sketch phase of the DCE.

See more details about this project


Construction Manager


    Thermal consultancy agency


    RT 2005 study, BBC study, Photovoltaic efficiency study

    Structures calculist


    Gilles Amblard


    Wood structure study

Contracting method

Separate batches

Type of market

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Energy consumption

  • 136,00 kWhep/
  • 298,00 kWhep/
  • Heating: 48.4
    Sanitary hot water: 37.8
    Lighting: 11.2
    Heating auxiliaries: 4.9
    Auxilliaries of ventilation: 34

Real final energy consumption

    136,00 kWhef/

    30,00 kWhef/

    31,00 kWhef/

    2 014

Envelope performance

  • 0,33 W.m-2.K-1
  • Wood frame walls, isolated by cellulose wadding, heavy wooden cladding 2cm.

  • 1,00
  • Automated management of solar panels

    LED lighting, presence detectors. Security alarm

More information

Gain compared to the reference RT 2005: 53,4%


    • Heat pump
    • Fan coil
    • Individual electric boiler
    • Others
    • humidity sensitive Air Handling Unit (hygro A
    • Solar photovoltaic

    Photovoltaic roof of 358m2
    Power 40.000 wc
    46000 KW / H / AN

Smart Building

    Centralized and automatic management of solar panels.

Urban environment

  • 839,00 m2
  • 362,00 %
  • 477,00
  • The nursery is located on the edge of the village in a suburban fabric of subdivisions as we see everywhere in France.

    The field on the edge of the sports field is an old vine court without any trees, no shade, to propose to make the young children stay implies a reflection on the Mediterranean climate.


    Bosch Solarworld®


    Bosch France

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    190 Solarworld Solar panelsPower of 4000 wc

    Guarantee of perfect operation over 30 years contract ERDF over 20 yearsAutofinancing over 15 years.

Construction and exploitation costs

  • 203 600,00
  • 45 550
  • 464 585
  • 219 423

Indoor Air quality

    Ventilation type Hygro A

GHG emissions

  • 5,00 KgCO2/m2/an
  • Green building study

Life Cycle Analysis

    Cellulose wadding insulation

    Local wood cladding (douglas pine) Acoustic marmoleum flooringWooden joineriesConcrete imprint limited to studs.

Reasons for participating in the competition(s)

Positive energy public equipment that is self-financing over a period of 15 years

A photovoltaic over roof that protects buildings and its surroundings from solar radiation and bad weather. Vegetated facades of vines to create vertical sunshades and lower the outside temperature of the walls by 15 ° C. A scalable local wood building.

Building candidate in the category

Energie & Climats Tempérés

Energie & Climats Tempérés

Prix du public

Prix du public

Prix des Etudiants

Prix des Etudiants

Green Solutions Awards 2019 - Bâtiments France

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Author of the page
Jean-François Daures

Architecte DPLG

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Green Solutions Awards 2019 - Bâtiments France