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1. Introduction - this Book
This book concerns the sustainable initiatives and innovative tasks undertaken by the Class1 project
partners in the construction of new buildings, the energy renovation of public buildings, the installation of
substantial Renewable Energy supply systems and the supplemental research and development work
carried out in the Class 1 project.
The topics covered in this book include:

The role of the municipality in setting the design restrictions and guidelines relating to energy reduction
for new building and energy reduction requirements in the renovation of the existing public buildings.
As well as the role of the municipality in promoting energy efficient buildings.
The integration of energy efficient solutions and renewable energy supply, and the realisation of the
associated benefits.
Indoor environment and performance assessment on both the private dwellings and public buildings.
The advancement of key technologies and certified products in sustainable building and living.
End user evaluations on preferences and experiences.

The book concludes with helpful material and good advice to municipalities intending to commence similar
building projects thereby "closing the circle".

The results and experiences of the Class 1 project are interpreted in this book through various reports,
assessments and deliverables conducted by the project partners covering the topics described above.
These reports, assessments and deliverables constitute quite a vast amount of information in their original
form, and as such, we have chosen to illustrate these through summaries and or through examples.
The full reports, assessments and deliverables can be downloaded from the Class1 project homepage
.
In all cases, a reference has been made to the report, assessment or deliverable in question.
Finally, relevant information in the form of articles and various papers are listed.
1.1. Concerto
CONCERTO is a European Commission initiative within the European Research Framework Programme (FP6
and FP7). Responding to the facts that buildings account for 40 % of total energy consumption in the Union,
for 33% of CO2 emissions and that 70% of the EU's energy consumption and a similar share of GHG
emission take place in cities, with a huge untapped potential for cost-effective energy savings, it aims to
demonstrate that the energy-optimisation of districts and communities as a whole is more cost-effective
than optimising each building individually, if all relevant stakeholders work together and integrate different
energy-technologies in a smart way.