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Register for the buildup webinar on the “CRAVEzero pinboard” 14.11.2019

his webinar will take place November 14 from 12:00 to 13:30.

Register though this link.

The CRAVEzero pinboard is a
structured framework organizing all needed information and tools to
build reliable low life cycle cost nZEBs. It comprises all major results
and outcomes. It thereby is an interactive support web tool for most of
the involved stakeholders (developer, design team, advisors, general
contractor, suppliers/sub-contractors, investor and financer). The
pinboard enables the organization of data and information in a
user-friendly and understandable way. The aim is to provide the user
with all necessary information, online and downloadable tools and
databases to develop specific low LCC nZEB business models and
technology sets suitable for different building types in different
climate regions.

In this regard, the pinboard is the
backbone of CRAVEzero, allowing changing the approach for the design and
construction of new nZEBs through the solutions, ideas and knowledge
generated. The main components are:

  • Life-cycle cost database and LCC tools (online and downloadable)
  • Process map and process tracker supporting the project management throughout all stages of the life-cycle
  • Business Model repository to assess existing Business Models and develop new ones based on the Business Model Canvas
  • Case-study dashboard

In the webinar the main components
will be shown and explained to enable the participants in efficiently
using the pinboard in their own work.

Agenda

  • General project overview – Tobias Weiss; AEE INTEC
  • LCC tool – Roberta Pernetti / Federico Garzia; eurac research
  • Process/ design map – Klara Meier; ATP sustain / Tobias Weiss; AEE INTEC
  • Business models – Benjamin Köhler / Fatma Özceylan; Fraunhofer ISE
  • Parametric simulation dashboard – Tobias Weiss / David Venus; AEE INTEC
  • Questions & answers

REGISTER NOW!

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https://www.buildup.eu/en/node/58277

CRAVEzero Talk4Experts in Austria/ Salzburg – 7.11.2019

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Energy Lunch Graz Austria – CRAVEzero / 17.09.2019 /Open News

33739_CRAVEzero_EnergyLunch48_4zu32

Presentation of the CRAVEzero project in Graz

CRAVEzero @ SBE Conference 2019

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CRAVEzero: Special Issue of Journal “Nachhaltige Technologien”

The CRAVEzero Consortium is responsible for an edition of the journal “nachhaltige technologien” about life cycle costs of buildings.

There are costs for constructing buildings, but there are also costs with regard to the whole life cycle of a building. Defining the life cycle of a building different periods can be determined: the production of building materials (building products), the construction and utilisation period as well as the disposal period. Currently, if buildings are planned, the construction period is well considered, whereas the utilisation period is considered unsufficiently and the disposal period often is neclected.

Download the full Journal here

According to the European Commission 50% of the produced materials and
energy consumption and a third of the water usage account for
construction and usage of buildings. Moreover the building sector is
responsible for about 30% of waste (construction, usage, renovation and
dumping of constructing materials.

Download the full Journal here

Therefore it is very important to consider all these aspects to a much
higher extent in future. Requirements for sustainable buildings can be
realised as soon as economic, ecologic and health aspects are
considered within their interdependency. The current issue of
„nachhaltige technologien“ deals with integral planning with regard to
building life cycles and addresses innovative and interesting
approaches.

Pinboard beta version for testing is now online

Visit the pinboard here:

The “CRAVEzero pinboard” – an interactive web-based structured framework supporting in developing low LCC nZEBs is online in a first beta version.

CRAVEzero pinboard is a structured framework organizing all needed information and tools to build:

  • an effective low life cycle cost nZEB business model
  • reliable lifecycle cost databases with cost reduction potentials in processes and
  • technologies methodologies, robust solutions and business models for low LCC NZEBs.

Visit the pinboard here:

Pinboard on Youtube

CRAVEzero @ International Student Energy Summit 2019 in London

Essam Elnagar presented the CRAVEzero project at the International Student Energy Summit 2019 at the Imperial College in London.

The International Student Energy Summit 2019 is an interdisciplinary summit created for students, by students. Over the course of four days, 650 delegates from all corners of the world attended the conference encompassing industry & technology, society & environment, markets & finance, and youth empowerment.

Congratulations Essam!

Special CRAVEzero Session @ SBE Conference 2019

CRAVEzero@sbe19_graz: meet us on Thursday in Graz and take part in our 2 special sessions on next generation nZEBs with contributions from our partners Fraunhofer ISE, EURAC and AEE INTEC

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CRAVEzero @ Sustainable Places 2019 Conference

Dr. Roberta Pernetti presenting the CRAVEzero project at the Sustainable Places 2019 Conference in Italy

https://www.sustainableplaces.eu/

The CRAVEzero project was showcased in the Sustainable Places 2019 conference in Cagliari. The conference involves designing, building and retrofitting the places we live and work in a more sustainable way. Sustainable Places prides itself on being an ideal platform for the dissemination of research, the conduct of workshops, EU project clustering and networking between stakeholders of all types. Between opening and closing keynote sessions, parallel technical sessions and project-organized workshops are held on conference topic areas.

nZEB Processes

The influence on the process decreases while the costs increase during the life cycle of a nZEB

Download the full report here:

In addition to legal and urban boundaries, buildings are essentially defined by the client. Owners or investors want to construct or renovate buildings for a specific purpose. Also, the buildings technical quality and the comfort standard have to be achieved within project specific budget limitations. Architects and specialised planners translate the client’s ideas and wish into real plans and are responsible for the appropriate execution of the building project. Construction companies and craftsmen from numerous different disciplines are involved in constructing the building.

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Energy flexible building managing models

Already
today buildings can be realised in the nearly-zero and plus energy standard.
These buildings achieve extremely low energy demands and low CO2
emissions and can be operated economically. For this reason, the motivation in
the CRAVEzero project is not only based on the energy characteristics of
buildings, but also on their life-cycle costs and building operation, which is
supporting the large-scale integration of fluctuating renewable energies in the
building itself, but also in higher-level electricity grids. For the
integration of fluctuating renewable energies (i) the integration and
intelligent operation of storages (electric and thermal) as well as smart
operation and management strategies are needed.

CRAVEzero_D43_Energy_flexible_building_managing_models

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Optimized nZEB – process map

The new CRAVEzero Report presents a manual of the “Interactive Life Cycle Process Map” (LCPM) developed within the CRAVEzero project. The process map connects all phases for the entire project lifecycle from the urban planning to design, operation and end of life phase. As a main result, this report also comes along with a downloadable “life cycle tracker tool”, an easy-to-use Excel file with VBA macros that combines project roles, actions, and design responsibility matrix. It is based on the experience of the whole consortium in the area of holistic project management with a focus on integral building planning of nZEBs. It gives support on how key performance parameters to achieve successful nZEBs should be prioritized and can be tracked along the whole life cycle process. It can be downloaded here:

Download the full report here

Pinboard: pinboard.cravezero.eu

Process Tracker Tool: http://www.cravezero.eu/pinboard/Downloads/CRAVEzero_ProcessTracker.zip

Process Map: http://www.cravezero.eu/pinboard/PMap/ProcessMap.htm

Process Map: http://www.cravezero.eu/pinboard/PMap/ProcessMap.htm

Actions, stakeholder-relations, pitfalls and bottlenecks, as well as the required goals, are pointed out in detail. Considering the importance and the complexity to reach nZEB-standard in a cost-optimal way for all the different stakeholders, multiple actions are required. These are, however missing in the standard planning process. This report provides a practical methodology to achieve the best conditions towards cost-optimal nZEBs in the whole planning, construction and operation process considering all relevant decisions, co-benefits, involved players as well as related cost reduction potentials. A process map that connects the entire project lifecycle for design, planning, operation and end of life phase accompanies this report. This process map is a workflow that points out cost reduction potentials through all the stages of the process where all the different parts are linked to providing summaries and reports to the decision-makers in leadership roles.

Process Map: http://www.cravezero.eu/pinboard/PMap/ProcessMap.htm

The
main additional advantages of integrating the “CRAVEzero process” into
standardized building processes are listed as follows:

  • Reduce risks
  • Speed-up construction and delivery
  • Control costs and energy performance
  • Foster integrative design and make optimal use of team members’
    expertise
  • Establish measurable success criteria

MapausCRAVEzero_D32_OptimizednZEBProcessMap

Process Map: http://www.cravezero.eu/pinboard/PMap/ProcessMap.htm

Results of optimised nZEB parametric models

Cost performance (EUR/m²) of the case study Aspern IQ over the whole life cycle of the building; comparison of nZEB variant with a building accord-ing to the CRAVEzero approach and the average value

Already
today buildings can be realised in the nearly zero and plus energy standard.
These buildings achieve extremely low energy demands and low CO2
emissions and can be operated economically. For this reason, the motivation in
the CRAVEzero project is not only based on the energy characteristics of
buildings, but also on their life cycle costs. However, the broad market
deployment of these buildings is progressing very slowly so far, as methods and
processes for the cost-optimal integration of efficiency measures and renewable
energies are not yet sufficiently described and therefore not yet familiar. As
a consequence – many poorly planned buildings are criticised for the fact that
the actual energy consumption of highly efficient buildings is higher than the
predicted demand and that high-efficiency standards are expensive and
uneconomical. The influence of the user behaviour of such energy-efficient
buildings is another aspect, which has to be considered to evaluate the impact
on the energy consumption of the building.

“bubble chart” of the case study Aspern IQ; bubble size indicates the average CO2 emissions; bubble position is determined by average investment costs and average life cycle costs
“bubble chart” of the case study Aspern IQ; bubble size indicates the average CO2 emissions; bubble position is determined by average investment costs and average life cycle costs

The
identification of suitable methods for the energetic-economic optimization of
highly efficient buildings in all life cycle phases is a prerequisite for the
broad market implementation.

This
method was developed earlier in the CRAVEzero project and documented in
Deliverable D6.1 “Parametric models for buildings and building clusters:
Building features and boundaries”.

In this
Deliverable D6.2, the method was applied to the five CRAVEzero case studies Aspern
IQ, Alizari, Isola Nel Verde, Les Heliades and MORE to perform parametric
calculations and to perform multi-objective energy and cost analysis over the
life cycle of the buildings.

Specific costs (EUR/m²) in the different phases of the case study Aspern IQ over the whole life cycle of the building; range between the different parameters indicated as minimum (min), average and maximum (max) values; per-centages represent the deviation from the average value

In total, more than 230,000 variants were calculated and analysed, with the key performance indicators: financing costs, net present value, balanced primary energy demand and balanced CO2 emission. The calculation results can be found in this report as well as on the CRAVEzero pinboard: http://www.cravezero.eu/pinboard/Dashboard/DBInfo.htm

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Existing nZEB business models

Below, a number of business models found in the major European markets are described using a BM profile. This contains some of the most relevant business model building blocks following Osterwalder and Pigneur (2010), such as:

  • Value proposition,
  • Customer relationship and
    segment,
  • Revenue streams and cost
    structure

Part of the analysed business models were provided by the contributing partners of CRAVEzero (BM1-17). The other business models have been described by the partners as well, based on the information found on the respective companies’ websites. Some companies have provided their own BMs. However, it is not guaranteed that the information have been understood and filled into the profiles correctly and holistically.

BM_reader

ACKNOWLEDGMENT

Large parts of the report are based on information of business models that belong to companies which are not contributing to the CRAVEzero project. The information have been retrieved from the respective websites. Therefore, it cannot be guaranteed that statements made in the course of this report are entirely correct.

Download the full report

Stakeholder related processes

Figure1 Stakeholders’ time expectancy of a nZEB project

In order to be able to optimise existing processes, technical qualifications, actions to be taken and roles must be known and tasks and functions of the stakeholders assigned. The assessment of the process for nZEBs depends strongly on the perspective. Building owners, investors, tenants, the construction industry, providers of energy efficiency solutions and planners have different interests and are involved in different phases in the life cycle of buildings. There is a general lack of understanding, transparency and uniform methods when it comes to the overall process of nZEBs.  Which costs and time horizons are significant for different actors and to what extent?

Figure2: Stakeholders’ influence in nZEB life cycle phases

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nZEB Processes

The influence on the process decreases while the costs increase during the life cycle of a nZEB

Download the full report here:

In addition to legal and urban boundaries, buildings are essentially defined by the client. Owners or investors want to construct or renovate buildings for a specific purpose. Also, the buildings technical quality and the comfort standard have to be achieved within project specific budget limitations. Architects and specialised planners translate the client’s ideas and wish into real plans and are responsible for the appropriate execution of the building project. Construction companies and craftsmen from numerous different disciplines are involved in constructing the building.

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Parametric models for buildings

Download the full report here:

Figure1: Analysis of the balanced primary energy demand related to the net present value for the different technology combinations for case study Solallen.

Already today buildings can be realised in the nearly zero and plus energy standard. These buildings achieve extremely low energy demands and low CO2 emissions and can be operated economically. For this reason, the motivation in the CRAVEzero project is not only based on the energy characteristics of buildings, but also on their life-cycle costs. However, the broad market deployment of these buildings is progressing very slowly so far, as methods and processes for the cost-optimal integration of efficiency measures and renewable energies are not yet sufficiently described and therefore not yet common. As a consequence – many poorly planned buildings are criticised for the fact that the actual energy consumption of highly efficient buildings is higher than the predicted demand and that high-efficiency standards are expensive and uneconomical. The influence of the user behaviour of such energy efficient buildings is another aspect, which has to be considered to evaluate the impact on the energy consumption of the building.

The identification of suitable methods for the energetic-economic optimisation of highly efficient buildings in all life-cycle phases is a prerequisite for the broad market implementation.

On the basis of the results, the statement is confirmed: nZEBs are economical. It can now be shown that the additional costs of efficiency measures are so low that highly efficient buildings have the lowest life-cycle costs. nZEB measures only have a small percentage influence on construction costs, but can reduce CO2 emissions many times over. When considered over the service life, these measures are usually cost-neutral or even economical as can be seen in Figure 2.

Figure2: net present value (€/m²) relation to the balanced CO2 emissions (kgCO2/(m²a)) of all variants of the case study Solallén

Figure3: Cost performance (€/m²))of the case study Solallén over the whole life-cycle of the building; comparison of nZEB variant with a building according to the CRAVEzero approach

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Report – Typology canvas of business models is online

Download the full report

The recently published report “D5.1: Typology canvas of business models” covers the development and detailed description of a methodology for the analysis of business models (BMs) within the framework of nZEBs. With this methodology the CRAVEzero project partners were able to describe, validate and evaluate their own BMs. The analysis comprises a total of 17 BMs. They are bundled and their main characteristics are provided and compared according to the Business Model Canvas.

Figure 1: Life cycle phases of nZEBs and business model allocation

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nZEB technology guideline is online

Download the full report here:

Different technologies are necessary to achieve the energy standard of nZEBs.​​ They can be summarised in three​​ main categories​​ (i)​​ Passive Energy Efficiency solutions, (ii)​​ Active Energy Efficiency solutions​​ and (iii)​​ Renewable​​ Energies. All approaches/ technologies are needed in order to realise nZEBs. And all of them play a major role in the CRAVEzero frontrunner buildings!

An excellent thermal insulation​​ and air-tightness of the building are of major importance, which can be seen in the rather low U-values of the building envelope elements in the case study buildings (opaque elements​​ between​​ 0.07 and 0.25​​ W/(m²K), windows mainly between 0.7 and 1.2 W/(m²K)).​​ In addition to adequate insulation, shading, usable thermal mass, natural ventilation and passive cooling possibilities are essential to minimise the energy demand of the buildings.

For the supply of the remaining energy demand for heating and cooling, highly efficient technologies using – if applicable – renewable energies should be installed. In the case study buildings, mainly heat pumps and district heating with low specific emissions are used – in several cases in combination with solar thermal. Boilers only play a minor role (see figure below). In addition and for the integration of renewable energies, in most buildings thermal storages are installed.

Concerning renewable energies, solar technologies and specifically PV are the dominant technologies used in the CRAVEzero frontrunner buildings (see figure below). Both​​ PV and solar thermal​​ are well developed and relatively easy to install on or at buildings.​​ They do and will play a major role in nZEBs as these buildings are only possible with the use of onsite renewable technologies.

A detailed description of the technologies installed in the CRAVEzero case study buildings can be found in the recently published Guideline II: nZEB Technologies available here.

Download the full report here:

Life cycle cost benchmarks of case studies all over Europe

Download the full report here:
The second part of the deliverable 2.2 reports an overview of the results of the case studies analysis, with the comparison of relevant indicators, costs, and performances among the case studies considering the effect of local specificities, different context and use of the buildings (i.e. normalised results).

 

Demo case Typology Location
Bouygues Green Home Residential Nanterre (France)
Les Héliades Residential Angers (France)
Residence Alizari Residential Malaunay (France)
ATP sustain NH Tirol Residential Innsbruck (Austria)
Kohler&Meinzer Parkcarré Residential Eggenstein (Germany)
Moretti More Residential Lodi (Italy)
Isola nel Verde A Residential Milan (Italy)
Isola nel Verde B Residential Milan (Italy)
Skanska Solallén Residential Växjö (Sweden)
Väla Gård Office Helsingborg (Sweden)
ATP sustain Aspern Office Vienna (Austria)
I.+R. Schertler Office Lauterach (Austria)

Table 3. Case studies analyzed

 

Figure 1: Life-cycle cost breakdown – average share of the phases

Figure 2 Life-cycle cost breakdown – normalized values.

 

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