Model project: GBB PlusEnergy house in social housing in Bottrop
Published
The six 72-square-meter apartments of the GBB Plusenergiehaus on Südring are intended for tenants who have a certificate of eligibility for housing. Demand was high. Even before completion, all of the apartments, which were ready for occupancy from May 2015, were already occupied.
The fact that tenants in social housing can now also benefit from the PlusEnergy level and thus from low energy costs is another important step.
Project participants: Gesellschaft für Bauen und Wohnen Bottrop mbH (GBB); architectural firm Strelzig und Klump, energy concept by engineering firm Jung
Net public electricity generation reached a record share of 59.7 per cent in 2023. The share of the load was 57.1 per cent. This is the result of an analysis presented today by the Fraunhofer Institute for Solar Energy Systems ISE. New records were set for wind and solar power in 2023. In contrast, generation from lignite (-27 per cent) and hard coal (-35 per cent) fell sharply. Photovoltaics stood out in the expansion of generation capacity: at around 14 gigawatts, the expansion was in double digits for the first time and significantly exceeded the German government's statutory climate protection target. Source of the data is the platform energy-charts.info
Photovoltaic systems generated approx. 59.9 TWh in 2023, of which 53.5 TWh was fed into the public grid and 6.4 TWh was used for self-consumption. At around 9 TWh, June 2023 was the month with the highest solar power generation ever. The maximum solar output of 40.1 GW was reached on 7 July at 13:15, which corresponded to a 68% share of electricity generation. In 2023, the expansion of photovoltaics significantly exceeded the German government's targets: instead of the planned 9 gigawatts, 13.2 gigawatts were installed by November; according to preliminary data, this will be more than 14 gigawatts by the end of 2023. This is a sharp increase compared to 2022 (7.44 GW). This means that PV expansion in Germany has reached double digits for the first time.
The Hydropower increased from 17.5 TWh in 2022 to 20.5 TWh. The installed capacity of 4.94 GW has hardly changed compared to previous years.
The Biomass at 42.3 TWh was at the level of 2022 (42.2 TWh). The installed capacity is 9 GW.
In total, the renewable energies approx. 260 TWh in 2023, around 7.2 per cent more than in the previous year (242 TWh). The share of renewable energy generated in Germany in the load, i.e. the electricity mix that actually comes out of the socket, was 57.1 per cent compared to 50.2 per cent in 2022. In addition to net public electricity generation, total net electricity generation also includes in-house generation by industry and commerce, which is mainly generated using gas. The share of renewable energies in total net electricity generation, including the power plants of "businesses in the manufacturing, mining and quarrying sectors", is around 54.9 per cent (2022: 48.2 per cent).
The Load in the electricity grid totalled 457 TWh, around 26 TWh less than in 2022. Due to the high electricity prices and higher temperatures, electricity was probably saved significantly. The increase in self-consumption of solar power is also reducing the load. The load includes the electricity consumption and grid losses, but not the pumped-storage power consumption and the self-consumption of conventional power plants.
Sharp decline in coal-fired power
After German coal-fired power plants ramped up their production in 2022 - due to the outage of French nuclear power plants, but also due to the distortions in the electricity market caused by the war in Ukraine - their share fell significantly in 2023. As a result, generation in November 2023 was 27 per cent below the same month in the previous year due to the drop in coal-fired electricity exports, but also because of the good wind conditions.
Overall, production from Lignite for public electricity consumption fell by around 27 per cent, from 105.9 to 77.5 TWh. This is in addition to 3.7 TWh for industrial own consumption. Gross electricity generation fell to the level of 1963.
Net production from Hard coal-fired power plants for public electricity consumption was 36.1 TWh (-35 per cent) and 0.7 TWh for industrial own consumption. It was 21.4 TWh lower than in 2022. Gross electricity generation fell to the level of 1955. Natural gas for electricity generation remained slightly below the previous year's level at 45.8 TWh for public electricity supply and 29.6 for industrial own consumption. Due to the shutdown of the last three nuclear power plants in Emsland, Neckarwestheim and Isar on 15 April 2023, the Nuclear power only contributed 6.72 TWh to electricity generation, which corresponds to a share of 1.5 per cent.
Battery storage systems are developing rapidly
The expansion of fluctuating renewable energies also increases the need for grid expansion and storage capacity. Battery storage systems, which are installed on a decentralised basis to buffer the generation of wind and solar power, are particularly suitable. The private household segment is showing strong growth, as is the case with photovoltaic systems. Overall, installed battery capacity almost doubled from 4.4 GW in 2022 to 7.6 GW in 2023, while storage capacity rose from 6.5 GWh to 11.2 GWh. The capacity of German pumped storage plants is around 6 GW.
Declining exports and exchange electricity prices
After an export surplus of 27.1 TWh was achieved in electricity trading in 2022, an import surplus of 11.7 TWh was recorded in 2023. This was due in particular to the lower electricity generation costs in neighbouring European countries in the summer and the high costs of CO2-certificates. The majority of imports came from Denmark (10.7 TWh), Norway (4.6 TWh) and Sweden (2.9 TWh). Germany exported electricity to Austria (5.8 TWh) and Luxembourg (3.6 TWh).
In winter, electricity exchange prices rose again and CO2-certificates became more favourable. This already led to a balance in November and, in conjunction with high wind power generation, to export surpluses in December. In contrast to its neighbouring countries (Austria, Switzerland, France), Germany also has sufficient power plant capacity in winter to produce electricity for export.
The average volume-weighted day-ahead price Exchange electricity price fell sharply to €92.29/MWh or 9.23 cents/kWh (2022: €230.57/MWh). This puts it back at the 2021 level.
A detailed presentation of the data on electricity generation, imports/exports, prices, installed capacity, emissions and climate data can be found on the Energy Charts Server: www.energy-charts.info/downloads/Stromerzeugung_2023.pdf
This first version of the annual evaluation takes into account all electricity generation data from the Leipzig electricity exchange EEX and the European Network of Transmission System Operators for Electricity (ENTSO-E) up to and including 31 December 2023. The quarter-hourly values from the EEX were energetically corrected using the available monthly data from the Federal Statistical Office on electricity generation up to September 2023. For the remaining months, the correction factors were estimated on the basis of past monthly and annual data. The extrapolated values from October to December are subject to larger tolerances.
This is based on the data for the German Net electricity generation to the public electricity supply. It is the difference between gross electricity generation and the power plants' own consumption and is fed into the public grid. The electricity industry calculates with net figures, e.g. for electricity trading and grid utilisation, and only net electricity generation is traded on the electricity exchanges. It represents the electricity mix that actually comes out of the socket at home.
The BMWi is funding energy transition real laboratories with up to 100 million euros per year. The competition focuses primarily on energy-optimised neighbourhoods as real laboratories. Project ideas can be submitted as of now.
Concepts can be submitted until 05 April 2019. You can find further information on energyresearch.com
On 27 September 2017, the IBA_LAB, the symposium of the International Building Exhibition (IBA) Heidelberg, will take place for the fifth time in a row. This year, for the first time, discussants and guests will meet in the German capital Berlin to broaden their perspective and discuss the question of the "Knowledge City of Tomorrow" in conversation - all in preparation for the IBA's major interim presentation in 2018.
The keynote speech at the evening reception will be given by Wolfgang Lotter, co-founder of brand eins. We will discuss the city in the knowledge society with Theresia Bauer, Minister of Science of the State of Baden-Württemberg, Undine Giseke, Head of the Department of Landscape Architecture and Open Space Planning at the TU Berlin, Volker Hassemer, former senator and board member of the Stiftung Zukunft Berlin, Jürgen Odszuck, Mayor of the City of Heidelberg, philosopher and author Rebekka Reinhard and Alexander Rieck from the Fraunhofer Institute.
The LAB deals in particular with the IBA Heidelberg's guiding question: How must the European city transform itself to meet the demands of tomorrow's knowledge society? From 2012 to 2022, the IBA wants to initiate and implement building projects and processes around the knowledge society and its guiding theme Knowledge | Creates | City. The primary aim is to focus questions of social change on their urban planning and architectural dimensions. In cooperation with the board of trustees, the IBA Heidelberg developed 4+1 more precise focal themes: Sciences, Learning Spaces, Networking, Material Cycles and overarching Co-production. Until 2022, the building projects are intended to give a selective impression of how the "knowledge city of tomorrow" will look in terms of architecture and planning.
Discourse at international level on the knowledge city of tomorrow is indispensable. That's why the IBA is looking for answers with appropriate knowledge transfer via existing and new networks - as was the case at this year's IBA_LAB N°5.
Theses on the "Knowledge City of Tomorrow" are also presented in the IBA Heidelberg's first publication, the recently published IBA_LOGBook N°1 thematised.Participation in IBA_LAB N°5 is free of charge. Please register by 20 September 2017 at www.iba.heidelberg.de.
The event is recognised by the Baden-Württemberg Chamber of Architects as continuing education for three hours.
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