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II
Preface
This book marks the end of a long journey, which started more than 10 years ago when the Municipality of
Egedal in Denmark were preparing an area of land for a new settlement called Stenløse South. The
municipal board decided that this new settlement should be low-energy settlement and introduced as one
of the first municipalities in Denmark, special low-energy requirements aimed at the home- owners buying
the plots for construction of new houses. The requirements were based on total financial calculations
showing reasonable payback times for the extra costs involved in constructing low-energy houses.

Next step in the journey was the introduction of new Building Regulations (BR) in Denmark, which
tightened the energy requirements compared to the previous BR and the municipality decided to change its
own requirements for the Stenløse South area correspondingly.

At the same time, the EU-CONCERTO initiative was launched and Cenergia Energy Consultants together
with the Municipality decided to propose a project ­ "the Class1" project for this initiative. The Class1
project application was made and seventeen new partners were invited: Eight of these were from Denmark
and nine from abroad.

Being a CONCERTO project, Class1 had to cover more than the demonstration of new buildings in Stenløse.
It was necessary to include energy renovation of public buildings and substantial renewable energy supply ­
in this case large areas of Photovoltaic (PV) systems on municipal buildings. The project also needed to
include a research and development part. This evolved into several subparts: A social-economic research
part, a monitoring and analysis part and a part covering the development of six key low-energy
technologies. The project was completed with the addition of a training part and of course: dissemination
to various stakeholders: municipalities, architects, engineers, builders and contractors.

The Class1 project commenced in November 2007 and has now ­ after 6 years ­ been completed. This book
constitutes an attempt to summarise the results of the pioneering work over these 6 years. It cannot be a
complete account of all the tasks carried out, but in its kaleidoscopic way it is hoped that it will give a good
impression of the activities, results and experiences and thereby be an inspiration to look for more details
in one of the many reports of the projects that can be downloaded from the website.

Sincere thanks to all who travelled along.


Ove Morck
Technical coordinator
Cenergia Energy Consultants
Herlev Hovedgade 195 st.
2730 Herlev
Denmark