Newsletter January 2013



Dear readers,

The main goal of the Re-Co project is to reduce energy consumption and cost through optimization of existing building technology systems and user behaviour. 15 pilot projects in hospitals, universities and public buildings have been initiated with the aim to achieve 10% final energy savings by implementing no-or-low-cost energy efficiency measures. In this issue we are presenting first results of the pilot projects at the University Library in Braunschweig, where the project partner edb has first concentrated on the implementation of the technical  low-or-no-costs measures, while has GEA from Austria in the Geriatric health centre of Graz given priority to the energy efficiency motivation raising activities for the employees. Further information on specific pilot projects can be found also on

You can read about the identified saving potential in a ventilation system in the Ludwigshafen hospital in the next issue of the Re-Co newsletter in spring 2013

In this issue we are presenting also the results of a short market survey about Re-Commissioning. The survey has shown that the Re-Commissioning approach is not widely known and that main expectations and obstacles related to the project implementation are similar for the energy efficiency projects in general and Re-Commissioning projects. Next to that you can also have insight into the Triple C Concept – a concept of Creating Commitment to Change our behaviour into a more energy efficient direction.

And you are, of course, warmly invited to join us also for the spring 2013 issue of the Re-Co newsletter.


In order to develop a Re-Co service, which will better suit the needs of the (potential) Re-Co customers, a short market survey about Re-Commissioning was performed in spring 2012. Most of 176 interviewees were coming from the health sector (35%), followed by education (18%) and private services (15%). For the health sector and education also a separate analysis was performed, but showed no significant differences to the overall results.  
Share of interviewees per economic sector   


Organisations, involved in the survey, perceive energy efficiency as very important. 77% of all organisations find energy efficiency very or extremely important and only 4% little important. Almost two thirds of all organisations have already set energy efficiency targets and exactly half organisations have already implemented more than 5 energy efficiency projects, while 10% of organisations have not yet done anything in the area of energy efficiency.
The most important expectations regarding energy efficiency projects in general are energy cost and consumption reduction, while the most important obstacles, which hinder the implementation of energy efficiency projects, are the lack of financial means and time of technical staff. 


As 69% of the interviewees have never heard about Re-Commissioning, we can conclude that it is not widely known. After reading a short explanation of Re-Co 88% of all interviewees found Re-Co concept easy to understand. However, as 39% of people involved in the survey see building envelope, where energy efficiency measures are usually associated with high investments, as one of the important areas for Re-Commissioning, it is questionable, if the Re-Co concept is really totally clear. Other areas with the highest energy saving potential as seen by the interviewees are user behaviour (54%), heating (50%), cooling (43%) and ventilation (40%).
Far the most important issue to be addressed by the Re-Co projects is the reduction of energy costs and consumption (87%), which is followed by the improved energy user’s behaviour (39%) and optimized operation of existing building technologies (36%). While the main issues to be addressed by the Re-Co projects are for the interviewees from education similar to overall results, the interviewees from the health sector have ranked implementation of low-or-no-cost energy efficiency measures and improved energy management system higher than optimized operation of existing building technologies.
Key Messages of the Re-Co Market Survey Analysis
Re-Commissioning approach is not widely known.  Some organisations, however, claimed that they are already implementing similar projects.  
Top management is in general the main decision maker for such projects.
The most important factors influencing decisions regarding implementation of Re-Co projects are expected reduction of energy consumption and cost and the project’s price.
The main obstacles to the implementation of Re-Co projects are the lack of financial means, the lack of time of technical staff and reluctance of energy users to behavioural changes. 
The main areas to be addressed by Re-Commissioning are users’ behaviour, heating, cooling, ventilation and building envelope.
Re-Commissioning – low investments for high energy savings – can be seen as one of the ways to stimulate mobilization of energy efficiency potential in the organisation. 
When deciding on whether to implement a Re-Co project or not a key person in 43% of organisations is a general manager, followed by the technical manager (14%). The roles of the general manager and the technical manager are in the health sector even more emphasized (56%, 20%). And which are the most important factors influencing the decisions about the implementation of the Re-Co projects? Expected reduction of energy consumption and cost and the price of the project have been ranked as the top-two. 
Main difficulties related to the implementation of Re-Commissioning projects
While 10% reduction of energy consumption and 10% reduction of energy costs are the most important objectives to be achieved by implementing Re-Commissioning projects for all together 69% of all interviewees, the most emphasized obstacle is the lack of financial means, which is in the health sector and education important even more than in general, probably because of a higher share of privately owned organisations in those two target groups.
Reasons for recommendation of a Re-Commissioning project
Because of several reasons – mainly energy cost and consumption reduction, longterm importance and compliance with organisation’s targets 79% of all interviewees would recommend the implementation of Re-Co project to the decision maker in their organisation. Out of them 63% would implement a project in a co-operation with external consultants and further 12% would totally outsource it.
In it is interesting, that on one hand some organisations wouldn’t decide for Re-Co, because they are running similar projects themselves, while on the other hand some organisations are despite this fact still interested in getting an outside view of their energy systems.
Last but not least, we would like to thank all the interviewees who took time to participate in this Re-Co survey. A report with the complete survey analysis is available on 



The project partner energydesign Braunschweig (edb) from Germany is performing a Re-Co pilot project at the Technical University Braunschweig (TUBS). Out of about 50 buildings, which are linked to a central building management system, 3 with high energy conservation potential were chosen for a pilot project with an idea of further implementation of Re-Commissioning on TUBS Campus on large scale.  

Basic data of the pilot project
No. of buildings  3
Net floor area 21.810 m2
Heat consumption 2.000 MWh/a
Electricity consumption 2.460 MWh/a

One out of 3 buildings included in the project is also the University library. It was built in 1971 and has a net floor area 14.409 m2 and a yearly consumption of 1.750 MWh for electricity and 513 MWh for heat (2011). An energy audit has shown that the implementation of appropriate no-or-low-cost energy efficiency measures could result in up to 22% lower primary energy consumption.

Performing energy audit

Some of the energy efficiency measures have already been implemented and some are still planned. For example, the operation of the book transport belt was optimised, operating hours of the glass display cabinet lighting were reduced, conventional fluorescent tubes at the ground floor were replaced by LED tubes, central supply air wire mesh was cleaned and the temperature in transformer rooms was adjusted. 

25% reduction of the supply air fan electrical load
due to a new silencer

The last implemented measure was a refurbishment of central air duct silencer, which did not meet the calculated requirements. This bottleneck was causing a substantially increased pressure loss and as a result the central supply air fan showed excessive electricity consumption. During operation hours the fan was mostly running at 100 % capacity and sometimes the required air rate could even not be provided. 

The Installation of a larger silencer reduced the pressure loss and fan speed while increasing the air flow rate. The electrical power load of the supply air fan was reduced from 12,5 kW to 9,5 kW. The measure worked out even better than calculated. The implementation costs were lower and the savings are higher than expected!

The implementation of the measure was simple and done within three days.

Item Projection Verification
Investment 3 500 € 3 000 €
Electricity savings 15,5 MWh/year 16,6 MWh/year
Cost savings 2 500 €/year 2 650 €/year
Payback period 1,4 year 1,1 year
Calculated and real results of a Re-Co measure

The project partner is in the near future amongst others also planning to optimise artificial lighting underneath shed roof of the library, to provide CO2-related air exchange rate and to install motion sensors in basement floors. Further details on energy efficiency measures can be found at




An integrated part of Re-Commissioning is the so-called user motivation. To increase the user-side potential savings, which are between 10 and 15%, a comprehensive concept of user motivation must be planned and implemented. In this case the following approach is followed up: the basis of user motivation are the people in the buildings and their needs. Measures are developed and realised with support of the executive level and in a process of fair communication based on partnership.

Developing measures with energy coaches in Graz 

Reinhard Ungerböck from  Graz Energy Agency says in addition: „We as an external energy adviser take the role of a process tutor who brings in actively his special knowledge for the development of measures. The focus is a common development of behaviour changing measures. These are e.g. combining of little used refrigerators, switching off screens during breaks… This approach is currently used in hospitals like Güssing or Geriatric Health Centre Graz. 

The measures are developed in work-shops with so-called "energy coaches" and are made available by means of posters to everyone. The energy coach acts as a communication interface among his colleagues and tries to implement the energy efficiency measures continuously in the working everyday life. The aim of energy users’ motivation is to create an energy efficient working everyday life by long-term behavioural changes and sensitisation - and this in motivating and exemplary kind. Desired side-effect: the users show increasing appreciation of energy efficiency measures linked to the building equipment systems and can use this knowledge also daily in their private life.



The Triple C Concept (Creating Commitment to Change) is a guidance paper that intends to help Re-Commissioning service providers to create sustainable buildings by managing change projects and initiating user commitment. 
The Triple C Concept (Creating Commitment to Change) is a guidance paper that intends to help Re-Commissioning service providers to create sustainable buildings by managing change projects and initiating user commitment. 
Full paper on organizational and psychological aspects with further useful information on how to get a Re-Co project started and how to be successful in it is available on
Project Coordinator

Nationalcontact point:

Newsletter editor:
Grazer ENERGIEAgentur
Kaiserfeldgasse 13/I
8010 Graz
Jožef Stefan Institute
Energy Efficiency Centre

Jamova cesta 39
1000 Ljubljana
Barbara Petelin Visočnik
Jožef Stefan Institute
Energy Efficiency Centre

Jamova cesta 39
1000 Ljubljana
Boris Papousek
Phone:  +43-316-811848-12

Barbara Petelin Visočnik
Phone:   +386-1-5885-394


Phone:  +386-1-5885-394
The sole responsibility for the content of this publication lies with the authors. It does not necessarily reflect the opinion of the European Union. Neither the EACI nor the European Commission are responsible for any use that may be made of the information contained therein.


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