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Monitoring – Energy provision for the IBA Hamburg 2013

EnEff:Stadt - Forschung für die energieeffiziente Stadt

Vision for the Energy Hill with a circular pathway and the planned development on the Kleiner Grasbrook island

© IBA Hamburg, bloomimages

Settlement summary

Urban district
Project status Projektstatus: Phase 3Realisation
Location of local community Stadtteile Wilhelmsburg und Veddel sowie Bereich Harburger Binnenhafen, Hamburg
Settlement in figures 35 km², 55,000 inhabitants (in the project area)
Developer, organizer IBA Hamburg GmbH as well as private and public investors
Utilisation type General residential, public buildings, commerce, trade, services
Project themes

Project description

Global climate change, which has particular importance for the citizens of Wilhelmsburg given their experience of the storm flood from 1962, is being addressed by the International Building Exhibition IBA Hamburg in its key themes “Cities and Climate Change” and the “Renewable Wilhelmsburg Climate Protection Concept”.

IBA objectives and concepts

The IBA is drawing on concepts predominantly developed in rural areas for providing 100% power supplies with renewable energies and is transferring them at a new scale to the urban environment. Based on the involvement of residents in the process, the energy efficiency in the urban environment includes the energy-based optimisation of existing buildings and the rigorous implementation of strict energy-based objectives for new-build schemes. Furthermore, the IBA is also aiming to implement a sustainable energy supply based on renewable energies for the entire urban district. In addition to the overarching climate protection concept, the IBA Hamburg therefore includes a diverse range of exemplary individual projects.

The presentation year for the IBA Hamburg starts on 23 March 2013 and ends at the beginning of November. The more than 60 individual projects, six theme-based exhibitions, numerous specialist conferences, countless event formats and 2,000 guided tours will convey the IBA themes to the public at different levels.

The IBA Hamburg closely corresponds to the objectives of the EnEff:Stadt programme:

  • The energy provision for the entire urban district of Wilhelmsburg is being developed to optimise its exergy and primary energy utilisation.
  • The entire planning and development processes are not just integrated within the projects but are also embedded in a public process involving citizens, business, science, local authorities and government.
  • The IBA Hamburg acts as a long-term and broad-based demonstration project and multiplier for energy-efficient urban development.
  • Innovative technologies are addressed thematically in individual projects and realised as pilot applications.
Modern management and planning methods for complex projects

The IBA is pursuing a holistic approach in its development towards a CO2-neutral city district. In addition to innovative energy concepts for individual buildings and systems, various strategies are being pursued to enable sustainable innovations. For instance, in the IBA laboratories future concepts concerning, for example, architecture and climate change, are being critically analysed together with international experts. The “Energy Atlas for the Elbe Islands”, which offers a holistic approach to achieving energy neutrality, was published in December 2010. The demanding IBA excellence refurbishment standard has been developed for private building developers, whereby the IBA has provided grants to ensure its adherence. The IBA is also aiming to achieve DGNB certification for selected projects.

Linking a diverse range of themes and stakeholders

The IBA is closely networked with all affected stakeholders in the district. An ongoing series of “Dialogue with Citizens” events have been taking place in which the IBA activities have been discussed in public. Parallel to this a participation council comprising 24 citizens and 9 politicians from the IBA presentation area have been monitoring the entire planning and realisation process. The prestigious IBA Board of Trustees has been accompanying the entire process of the IBA since 2007. The IBA’s Climate+Energy advisory board provides critical support for the work of the IBA in its key theme “Cities and Climate Change”, strengthens the innovativeness of the projects and reflects the local efforts of the IBA Hamburg in the international professional context.

In addition to the climate protection concept, further crossover projects such as the Elbe Islands Educational Campaign or intercultural public spaces have ensured comprehensive civil involvement in the IBA. The involvement of the Wilhelmsburg residents in developing the model and implementing the measures is an essential requirement of the IBA. For example, the measures and overall concept are explained in a permanent exhibition with broad public appeal entitled “IBA at Work”, which is housed in the IBA DOCK premises, and at a more academic level at the “Gateway to the World” educational centre. The IBA process is being accompanied by numerous information events, publications and a wide-ranging website.

Deployment of innovative technologies

As part of the IBA Hamburg, a diverse range of innovative technologies are being realised both in individual projects as well as in combination at the communal level. They are used, for example, for implementing sustainable concepts for supplying the entire site with power based on renewable energies:

  • Reutilisation of a former landfill site (Energy Hill / PV and wind energy)
  • Conversion of a former flak bunker (Energy Bunker / biomass CHP, use of industrial waste heat, solar thermal and PV)
  • Local heating networks based on renewable energies (Integrated Energy Network Wilhelmsburg Central, New Hamburg Terraces / solid biomass, biogas)

Innovative technologies and concepts are also being deployed in the implementation of highly energy-efficient new-build schemes and refurbishments. For this purpose the IBA has launched a diverse range of demonstration projects:

  • Up to 12 individual projects as part of the “Building Exhibition within the Building Exhibition” with particularly innovative themes
  • Numerous passive house projects, partially aimed at achieving zero energy or energy-plus homes (Open House cooperative project, World Quarter and Smart is Green new-build schemes)
  • Energy-efficient non-residential construction projects (IBA Dock, HPA port railway administration building, new building for the Hamburg Department for Urban Development and the Environment with DGNB certification) 
  • School and other public buildings to a passive house standard (Gateway to the World educational centre)
  • Refurbishments approaching the passive house standard or with passive house components (“Prima Klima-Anlage” campaign).

In addition there are individual projects that are intended to implement efficient energy supply concepts for using biomass, micro-CHPs, heat pump combinations and fuel cells. These also include the use of electricity meters and demand-side management concepts as well as the development of innovative information and communications technologies.

The district of Wilhelmsburg currently does not have a central district heating supply system and there are no plans for implementing such a system by an energy supplier. The construction of local heating networks is therefore a fundamental building block in implementing the climate protection concept. An open heating network into which building owners can feed decentralised heat is being developed for the first time as part of the Integrated Energy Network Wilhelmsburg Central.

Monitoring and evaluation

The IBA Hamburg consists of several sub-projects that were started at different times and whose implementation has been staggered. The conceptual work of the IBA began in 2007. The individual measures were largely implemented or have been already partially completed in time for the launch of the presentation year in March 2013. The planning, implementation and monitoring phases have therefore been staggered in accordance with the specific buildings or districts.
The measures taken are being evaluated within the scientific support programme being conducted as part of each proposed project. The scientific working goals for the projects in terms of the support provided by the Institute of Building Services and Energy Design at the TU Braunschweig and their realisation can be divided into three performance phases:

1. Objectives, Planning
  • It is planned to evaluate and document the ongoing IBA process and its adherence with the requirements of the Eneff:Stadt research initiative.
  • Development of methodical principles for uniformly implementing the monitoring concept.
  • Support for the IBA project coordination in integrating measures for providing energy and realising energy-efficient buildings in accordance with an agreed overall concept.
2. Implementation
  • Quality assurance for the building-related measures in terms of maintaining energy-based objectives.
  • Planning- and implementation-based support in adapting the system technology to changes in the construction process.
  • Simulation of selected individual buildings and the overall site – energy-based balancing of the IBA on the coverage and requirement side in terms of maintaining the requirements for CO2 neutrality.
  • Evaluation/analysis of the IBA process in terms of maintaining the defined energy- and planning-related objectives.
3. Operation
  • Evaluation of the measurement data derived from the operational monitoring; production of material, energy and CO2 balances for the construction and operation.
  • Analysis of how the user behaviour influences the energy consumption.
  • Energy balancing the IBA and checking that the goals for supplying emissions-neutral energy to the residential district are met.
  • Analysis and documentation of the electricity and gas consumption in the entire IBA area from 2007 to 2013 and depiction of the proportion of renewable energies used.
  • Presentation of the results, including as part of the IBA Hamburg events, and their conveyance via an interactive, multimedia “energy table”.

The individual construction and energy concept measures with different levels of depth shall be measured and documented as part of the third performance phase. For this purpose projects will be placed into different categories. The categorisation depends on the type of energy use: supply networks or buildings. The electricity and heat consumption will be recorded as part of a simplified monitoring for buildings. In addition, more detailed assessment and monitoring will be conducted for selected innovative and cutting edge buildings. Should the detailed observation give rise to interesting research themes that cannot be dealt with within the scope of the available monitoring capacities, it is intended to focus on these in more detail in separate follow-up projects. The consumption data for the electricity and heat will be anonymised and then made available by the energy suppliers. The Supply Networks category includes the monitoring of local heating networks based on renewable energies.