EURHONET TOPIC GROUP ENERGY SAVINGS
BUILTOG - MINUTES
May 20th-22nd Marne-La-Vallée, France
EURHONET – Topic Group Energy Savings
Day 1: May, 20th, Marne-La-Vallée, France
ATTENDEES
Country
Bulgaria
France
France
France
France
France
France
France
France
France
France
Germany
Germany
Germany
Germany
Germany
Germany
Germany
Italy
Italy
Italy
Italy
Italy
Sweden
Sweden
Sweden
Sweden
Sweden
UK
Company
BASF
DELPHIS
Foyer Rémois
Foyer Rémois
Foyer Rémois
Foyer Rémois
FSM
Habitat 62/59/Picardie
Cochet Dehaene (BET pour Habitat 62/59)
Parc Architectes
Parc Architectes
BASF SE
Bauverein AG
LUWOGE consult
LUWOGE consult
Passivhaus Institut
PlanungsgruppeDREI
ProPotsdam
ALER Brescia
ATER Treviso
ATER Treviso
ATER Treviso
GreenLab
AB Stångåstaden
ÖBO
Sweco Architects
Uppsalahem
Uppsalahem
Trent & Dove Housing
Name
Valentina Dikanska
Sarah STOCCO
Carole Dujardin
Hannah FISCHER BAUM
Houda Kamoun
Jean-Denis MEGE
Olivier Barry
Rémy Delbaere
Nicolas Cochet
Adélie COLLARD
Brice CHAPON
Margit Pfundstein
Felix LEONHARDT
Moritz Diesner
Thilo CUNZ
Susanne Theumer
Stefan Reuther
Helfried Quint
Danilo SCARAMELLA
Flavio BELLIN
Paolo ZORZI
Sabina MANENTE
Isaac SCARAMELLA
Erica Friberg
Magnus Uhlin
Jonas Kjellander
Mikael Engberg
Tomas Nordqvist
Steve Grocock
MEETING AGENDA
14:00 -14:15
14:15-15:45
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15:45-16:00
16:00-16:30
16:30-17:00
17:00-18:00
Welcome to Marne-la-Vallée (Jean-Denis Mège)
Builtdog Updates and Design Detail Workshop (Ludwoge):
Bétheny/Reims Métropole
Châlon-en-Champagne
Arras
Örebro
Bremen
Coffee Break
Recap on Construction Costs Comparison (Stefan Reuther)
Sénart and Darmstadt, a comparison of two completed buildings (Thilo Cunz)
How to develop Buildtog in the future
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EURHONET – Topic Group Energy Savings
Welcome and introduction to the Topic Group activities
by Jean-Denis Mège
The global project began in 2009 and has targets up to 2020 to minimize energy expenses and to
increase architecture quality:
- 20 % less energy consumption by increasing energy efficiency
- 20 % less consumption of fossil energy by use of renewable energy
- 20 % less CO2 emissions
BuildTog Updates and Design Detail Workshop
by Moritz Diesner
Eurhonet, this is 5 countries and 31 members with quality partners (ANMA, BASF and LUWOGE). All
the members have the same goals: to build high energy performing buildings on a large scale at a
reasonable price, with similar technical and architectural approaches in the different countries in
order to be able to compare each building with the others.
There are 7 BuildTogs projects on progress (2 completed and 5 in planning or under construction):
Arras (France), presentation by Remy Delbaere and Nicolas Cochet:
The call for tenders was from November 2014 to February 2015. The selection criteria were: price
(40%), technical solutions (36%), guaranties (12%) and environmental protection (12%). There was
two cheaper companies but which were not able to build a Passive House.
The building has 4 levels and 12 dwellings.
Step one: how to be sure that the company which will be chosen is able to achieve the work
especially for the passive details?
Step two: How to reach the price and be sure that the building will be a PassivHaus building?
The total cost of this project is about 1 950 000 € excluding taxes (1 600 €/m² for a usual price on
Arras of 1 200 €/m²).
The construction is starting in June 2015 and will last until October 2016.
Bétheny (France) Presentation by Hannah Fischer-Baum and Brice Chapon, Parc Architects.
The Bétheny project is to build a building for young workers with 3 levels and 22 housing units, a
slanted roof, a coursive outside the building and balconies on the other side. The building has a
banana design. This curve may costs 5% of total project. The project is going into construction
drawings. At the same time, the team is working to improve the façade design. Since this project is
quite different than the other BuildTogs, a first BuildTog++, the issue of how to integrate design
review is at play.
Châlons (France) This project is currently under construction.
Sénart (France) The project is completed and inhabited.
Örebro (Sweden) There is an obstacle with people opinion and with local authorities on the Örebro
project. Neighbours are complaining about the design and about the distance with their buildings.
The site is very well adapted and they won’t change for another one.
Bremen (Germany) A monitoring concept has been used with 5 steps. The project is at step 4
(building permit). There is a special ground for the building because the water is close to the surface.
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EURHONET – Topic Group Energy Savings
The foundations need to be deep in the ground. In Passive House, it is worth to invest in planning
process as it avoid more costs thereafter.
Darmstadt (Germany) The project is completed and inhabited. Most of the apartments are sold
and few are rented out (rental fee = 10,50€/m²).
You can also visit the BuildTog website for more information: buildtog.eu.
Recap on Construction Costs Comparison by Stefan Reuther
To compare Passive House costs, we have to count only building costs with land cost and financial
cost aside.
Area = Gross Floor area (GFA) €/m² / Rented Floor Area (RFA).
The costs have to be structured the same way in every country. Other elements have to be
compared: VAT and price level of country for example.
Passive House has to be made on simple construction to improve costs.
Sénart Chalon and Darmstadt, a comparison of two completed buildings
and How to develop Buildtog in the future by Thilo Cunz
With two BuildTogs completed (Sénart and Darmstadt) and another nearing completion (Chalon),
Thilo presented the different projects and compared their performance, costs, and design. He
presented a methodology that can serve to guide future Buildtog++ projects where each of these
factors is weighted. There was a long discussion about how design is measured. It seems impossible
to measure whether architecture is good or not, especially across countries. Perhaps it is better to
measure how a building responds to its cultural constraints?
The main Topic Group objective is to minimize the losses in Passive House building and maximizing
gains.
The BuildTog Topic Group has to develop the next call with a more detailed project with better
supports. We have to think about how to improve the Topic Group project as it seems that it is not
enough to meet three times a year. The next project presentation is in December 2015.
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EURHONET – Topic Group Energy Savings
Day 2: May, 21st, Marne-La-Vallée, France
ATTENDEES
Country
Company
Name
France
Foyer Remois
Hannah FISCHER BAUM
France
Foyer Remois
Jean-Denis MEGE
France
Foyer Remois
Houda Kamoun
France
Foyer Remois
Carole Dujardin
France
Foyer Remois
Romain Duvoux
France
DELPHIS
Sarah STOCCO
France
Habitat 62/59/Picardie
Rémy Delbaere
France
FSM
Christophe Esprabens
France
SOLARES-BAUEN(Strasbourg)
Paul-Louis Sadoul
France
GCI
Gauthier COSTANTIN
France
LA MAISON PASSIVE EN France
Etienne VEKEMANS
France
PUCA
Anne VIGNE
Germany
Bauverein AG
Felix LEONHARDT
Germany
LUWOGE consult
Thilo CUNZ
Germany
LUWOGE consult
Moritz Diesner
Germany
ProPotsdam
Helfried Quint
Germany
PlanungsgruppeDREI
Stefan Reuther
Germany
BASF SE
Margit Pfundstein
Germany
Passivhaus Institut
Susanne Theumer
Italy
ALER Brescia
Danilo SCARAMELLA
Italy
GreenLab
Isaac SCARAMELLA
Italy
ATER Treviso
Flavio BELLIN
Italy
ATER Treviso
Paolo ZORZI
Italy
ATER Treviso
Sabina MANENTE
Sweden
Uppsalahem
Tomas Nordqvist
Sweden
Uppsalahem
Mikael Engberg
Sweden
ÖBO
Magnus Uhlin
Sweden
Sweco Architects
Jonas Kjellander
Sweden
AB Stångåstaden
Erica Friberg
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EURHONET – Topic Group Energy Savings
MEETING AGENDA
08:45 – 09:00
09:00 - 09:15
09:15 - 10:15
10:30 - 10:45
10:45 – 12:00
12:00 - 13:15
13:15 – 13:40
13:40 – 14:10
14:10 – 14:45
14:45 – 15:15
15:15 – 16:30
16:30 – 18:00
Welcome and Coffee
Introduction to Topic Group: Activities and Trajectory (Thilo/JD MEGE)
Passiv Haus® District and urban strategy, (Passiv Haus® Institute, Darmstadt)
Coffee Break
District Planning in Marne-la-Vallée / Showcase projects (EPA Marne + Bouygues
Immobilier)
Lunch (Buffet)
Travel to “Les Lodges” in Chanteloup-en-Brie and visit
Travel to Lieusaint (Sénart BuildTog)
Sénart BuildTog Visit (FSM: presentation of a French Passiv Haus® experience)
Travel to Chessy (Le Cercle)
Disney’s Urban Strategy (Bernard DURAND-RIVAL, Senior Manager Urbanism and
Architecture at Euro Disney)
Sites Visit
- Private Developer’s Site: GCI
- Marne La Vallée and surrounding area: visit by bus
Introduction to Topic Group: Activities and Trajectory
by Jean-Denis Mège and Thilo Cunz
All companies involved in Energy Saving Topic Group and BuildTog program have the same goal: to
build high energy performance buildings, on a large scale, at a reasonable price, with similar
technical and architectural approaches in their different countries.
PassivHaus® District and urban strategy
by Susanne Theumer, PassivHaus® Institut, Darmstadt
Ms. Theumer presented the PassivHaus principles and a new norm, EnerPHit, especially focused on
rehabilitations that are performing but cannot meet PassivHaus standards without significant
outlays. Ms. Theumer also presented the PassivHaus’s recent efforts at planning on a district level,
notably with a project in Heidelberg. Her conclusions on district level planning are that, what’s very
important is that some of the passive house factors are taken into account in site planning.
However, they cannot all be accounted for. She also discussed large scale rehabilitation projects in
Innsbruck, Bolzano, and Augeda, Portugal.
To obtain the PassivHaus certificate, every criteria is checked (very low space heating demand or
each component has PassivHaus quality, airtightness, very low primary energy demand). The
component are certified by results of tests from independent laboratories. 90 % of PH measures
are lower than US standard for low energy buildings.
The PHPP 9 (Passive House Planning Package) is a design tool and a calculation tool for economic
comparison of efficiency measures.
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EURHONET – Topic Group Energy Savings
Some solar energy can be used immediately in a house but a part needs to be stored. It’s the
Primary Energy Renewable (PER) concept. We still need a more efficient material to store summer
energy to be used in winter.
13-15 November 2015: International PassivHaus Days. From 7 – 9 November 2014, Passive House
owners and residents around the globe opened their Passive House homes and offices to share
their experiences and show what Passive House is all about. Check on http://www.passivehouseinternational.org for more information.
April 2016 : International PassivHaus Conference.
District Planning in Marne-la-Vallée / Showcase projects
by EPA Marne and Bouygues Immobilier
With the local authority, the EPA Marne, the development group Bouygues, has constructed a
program of individual houses, for sale, in Chanteloup-en-Brie. The houses are also evolutive, which
is to say that it is possible to add rooms. The idea was to develop a product that could be deployed
in other sites in France. The houses are wood structured with bio sourced materials (hemp wool for
isolation). The project difficulty was the optimization between energy, cost and architectural design
criterias. The overall construction cost was €2000/M2. They are currently being completed and are
being sold. The team is waiting to see how the new owners will adopt and use their passive houses.
In the commercialisation, they found that some parties were interested in the houses because of
their architecture and location, others were interested because the buildings are passive.
Sites visit:
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“Les Lodges” in Chanteloup-en-Brie, a visit of the PassivHaus project presented by
Bouygues and EPA Marne earlier in the day.
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Sénart BuildTog Visit, French PassivHaus® by FSM.
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Disney’s Urban Strategy with a presentation by Bernard DURAND-RIVAL, Senior Manager
Urbanism and Architecture at Euro Disney. M. DURAND-RIVAL presented Disney’s approach
to urban planning. He spoke about the history of Disney’s implantation in the area (since
the convention between Disney, French Government, EPAMARNE and networks companies
in 1987) and the desire to create a residential area around their amusement park. He also
described the genesis of a project at Disney, how the team creates a story of urban
development and choses a style of architecture so as to create a sense of identity around
each of its projects. The total area is currently 2 230 hectares.
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Private Developer’s Site: GCI. A mixed use commercial and housing project in Serris that is
currently under construction.
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