Half-time of the IBA Heidelberg: The exhibition is open

Opening of the exhibition (from left to right): Carl Zillich, Curatorial Director of the IBA Heidelberg, Hanne Rung, Project Manager of the interim presentation, Mayor of the City of Heidelberg Hans-Jürgen Heiß, Gunther Adler, State Secretary for Building, Jürgen Odszuck, First Mayor of the City of Heidelberg and Michael Braum, Managing Director of the IBA Heidelberg *© IBA Heidelberg | Tobias Dittmer*

The exhibition marking the halfway point of the IBA Heidelberg has opened: A rich accompanying programme attracted almost 1000 visitors from Thursday to Saturday, many of whom were visiting the exhibition venue, the Mark Twain Center in Heidelberg's Südstadt, for the first time.

The IBA SUMMIT, the biennial meeting of mayors, university rectors and urban planners from international "Knowledge Pearls" in Heidelberg, heralded the opening days of the IBA interim presentation on 26 April. Prof. Dr Eckart Würzner, Lord Mayor of the City of Heidelberg welcomed the guests from Stanford, Cambridge, Lund and Leuven with an introduction to the IBA: "The IBA Heidelberg is on an excellent path. It demonstrates how various strengths of our city can be interwoven. These include, for example, promoting education, developing environmentally friendly mobility, creating new living space and promoting climate-neutral urban development. The IBA has made a significant contribution to the sense of a new beginning in Heidelberg.

The vernissage of the exhibition took place at the Mark Twain Center on the evening of 27 April. Gunther Adler, State Secretary for Building, Housing and Urban Development in the Federal Ministry of the Interior spoke on the occasion about the "IBA" format from the federal government's point of view. According to Adler, the IBA is an important piece of German building culture that enjoys international renown and is worth every effort to pursue its claim to excellence. The IBA tradition encompasses many aspects: International relevance, next-practice projects, sustainable impact on the region and building culture standards. For the IBAs currently underway, it is sometimes difficult to fully meet these claims to excellence under the given framework conditions. "Nevertheless, we are seeing overwhelming results, which encourage us as a federal government to continue the quality offensive together - also within the framework of the IBA Heidelberg," the State Secretary emphasised. "We need the IBA to show us how we can find answers to relevant questions of current urban development using new and unusual methods and means - this is more urgent today than ever. The IBA's courage to experiment and to go beyond existing boundaries is important to address the quality of living, working and living in our cities in the future."

Jürgen Odszuck, First Mayor of the City of HeidelbergThe IBA's interim presentation provides an excellent overview of what it is doing in Heidelberg: it gives important new impulses on how we can further develop Heidelberg as the knowledge city of tomorrow. It promotes excellent building projects in our city. And it offers innovative approaches on how we can design processes more effectively and lead to even better results."

Michael Braum, Managing Director of the IBA Heidelberg, was pleased about the great response to the exhibition opening and welcomed the guests: "Innovation in the knowledge society uses its intellectual and creative resources. This changes the value system of the industrial society, in which diligence stood above creativity. Today, in the knowledge society, creativity may be more important than diligence. This also has implications for the city. Our cities will change more dynamically in the 21st century than they did in the course of industrialisation. This requires a new way of thinking in urban planning and architecture. The IBA would like to make a contribution to this, which can now be seen in this exhibition."

Carl Zillich, Curatorial Director of the IBA Heidelbergexplained the exhibition concept: "Before we present realised building projects for the knowledge city of tomorrow in 2022, we have focused at the halfway point on the actors, processes and ideas of the first five years. Together with the exhibition makers from 'Stiftung Freizeit', we have developed analogue and at the same time interactive forms of presentation. Thus, for different interests, individual glimpses behind the scenes of the IBA, the urban development of international science cities, but also Heidelberg institutions and initiatives are on offer. Numerous architectural models, pictures and plans have already aroused curiosity about the construction sites, which are now marked all over the city."

The opening days closed on Saturday, 28 April with a colourful programme, during which many young families in particular got an impression of the exhibition and the IBA projects.

The exhibition of the IBA interim presentation is now open until 8 July daily from Tuesdays to Sundays from 15.00 - 20.00, including public holidays.

More information about the exhibition, guided tours, registration or booking of individual group tours at:
www.iba.heidelberg.de

Keywords: News Blog Baden-Württemberg

Published 29 November 2019

Bavaria could cover its electricity needs with renewables on a balance sheet basis

Decentrally generated electricity from renewable energies can cover the demand for electrical energy in Bavaria both in balance and in perspective. This is the result of a joint study by the grid operators Bayernwerk Netz GmbH (Bayernwerk), LEW Verteilnetz GmbH (LVN) and Main-Donau Netzgesellschaft. The Bavarian power grid operators have analysed which development paths are possible for Bavaria with regard to renewable power generation and whether climate neutrality can be achieved in the power sector. The grid operators received scientific support from the Forschungsstelle für Energiewirtschaft e.V. (Research Centre for Energy Economics).

Study describes four scenarios

The current study follows on from the previous study from 2015 and describes the future development of renewable electricity generation in Bavaria. In four scenarios, the forecasts for wind and photovoltaic systems on buildings and open spaces are available in high regional resolution. The two scenarios "Interconnection" and "Regional Generation" look up to the year 2060 and assume complete climate neutrality of electricity generation in Bavaria. This requires a considerable increase in the number of photovoltaic and wind power plants. However, a CO2-neutral electricity supply cannot be achieved if the expansion trend of the last three years is merely continued (Trend scenario) or if the current federal policy framework (Policy scenario) is used as a basis.

Distribution grids as the backbone of a decentralised energy supply system

"We need even more dynamism in the expansion of electricity generation from renewable energies if we want to achieve the idea of a climate-neutral energy supply," says Egon Westphal, technical director of Bayernwerk. "The distribution grids have a central role to play in this. They will continue to be the stable backbone of a decentralised energy supply in the future. The people of Bavaria can rely on this", says Dr. Egon Westphal.

In addition to the further integration of renewable plants into the electricity grid, the foreseeable increase in demand on the electricity grids as a result of new applications such as electromobility will also remain a central task. Through grid expansion, the use of innovative technologies as well as digitalisation and flexibilisation in generation, consumption and storage, the distribution grid operators see themselves well equipped for these tasks. "We can additionally optimise the necessary grid expansion if we can access flexibility options in generation, consumption and storage in a grid-serving manner," explained Dr Egon Westphal. In addition, the distribution grid operators will further intensify their cooperation in order to be able to ensure the safe and efficient operation of the electricity grids in the future as well.

In 2060, green electricity generation may exceed consumption in Bavaria

The two scenarios "interconnection" and "regional generation" are particularly important with regard to climate policy goals. The interconnection scenario assumes a strong nationwide exchange of electricity via transmission lines - the most economical scenario in terms of cost optimisation under today's conditions. In the "Regional Generation" scenario, on the other hand, green electricity is preferably generated locally in Bavaria. In both scenarios, around 60 TWh of green electricity will already be generated in 2030, rising to around 85 TWh in 2060. If current electricity consumption is extrapolated, this amount would cover around 80 percent of electricity consumption in 2030. In 2060, Bavaria's green electricity plants will produce significantly more electricity than is consumed. In perspective, there will be enough renewable electricity available for the electrification of new applications such as electromobility, the expansion of heat pumps or power-to-X measures.

Strong growth in photovoltaics

An important component in both scenarios is the strong expansion of photovoltaic plants: the installed PV capacity on buildings increases from currently 9,500 MW to 21,100 MW in 2030 and 32,400 MW in 2060. In the interconnection scenario, ground-mounted plants also record a significant increase, from currently 3,000 MW to 10,000 MW (2030) and 25,200 MW (2060). While in the regional scenario the expansion of ground-mounted systems is somewhat more restrained, wind power plays a more important role here. The scenario describes an increase in wind power from currently 2,800 MW to 5,700 MW (2030) and 9,300 MW (2060).

Wind power with regional focus

In the regional scenario, the strongest addition of wind power plants occurs in Lower Franconia with +1,500 MW. However, sites in the southern administrative districts (Lower Bavaria: +1,200 MW and Swabia: +1,100 MW) must also be developed in order to achieve the climate protection targets. In the other administrative districts, the expansion amounts to between 550 and 650 MW. In contrast to wind power, the expansion of ground-mounted systems is distributed more evenly across all administrative districts. With 2,300 MW, the largest addition is in the largest administrative district, Upper Bavaria.

More than 60 percent of Bayernwerk's grid is already made up of renewables.

Almost 300,000 plants feed electricity from renewable energies into the Bayernwerk grid, mostly from photovoltaics. In total, these systems have an output of almost 9,000 megawatts. Bayernwerk thus already transports more than 60 percent renewable energy in its grids. The most important energy sources are photovoltaics, hydropower and biomass. Wind plays a subordinate role.

Source: PM of Bayernwerk et al. from 28.11.2019.

Keywords:
100% EEs, Citizen Energy, CO2-neutral, DE-News, Renewable, Research, Climate protection, Media, Tenant electricity, Sustainable management, New books and studies, News Blog Bavaria, PV, PlusEnergy house/settlement, Environmental policy, eMobility, Life cycle assessment, Ecology