Fraunhofer ISE short study: Increased construction of large rooftop PV systems with small tilt angles
Published
In a recently written short study, scientists from the Department of Energy System Analysis at the Fraunhofer Institute for Solar Energy Systems ISE prepared an evaluation of the Market Master Data Register (MaStR) and the EEG system master data for photovoltaics (PV). Important findings of the analyses were that with 38 percent of the newly installed capacity, the increase in capacity in Germany is increasingly taking place in the segment of rooftop systems larger than 100 kW, 22 percent of the newly built PV systems are erected in a west, east or east-west direction and 19 percent of these systems have tilt angles smaller than 20 degrees.
Relative shares of the different orientations in the construction of new plants. Source: Own calculation based on MaStR data registered as of 31.01.2019 (as of 03.03.2020).
The Market Master Data Register (MaStR) is the register for the German electricity and gas market. Since January 2021, all electricity generation units connected to the general supply grid must be entered in it. This also applies to the steadily growing number of photovoltaic systems in Germany. In addition to the master data on output and location of a PV system, which has already been recorded in the Renewable Energy Sources Act register (EEG system master data), the market master data register records further information such as orientation, inclination and output limitation.
These parameters have now been analyzed by scientists at Fraunhofer ISE. The evaluation covers the period from 2000 to the present day and shows the development over time in terms of number, power, location by federal state, orientation, inclination and power limitation. Different evaluation criteria were taken into consideration, which allow statements to be made on the following aspects: Plant addition, power addition by plant class, plant addition by federal state, plant orientation and inclination angle.
Fraunhofer ISE evaluates these central parameters at regular intervals and makes the results publicly available. In addition, the Institute offers further evaluations of this database on request.
82 percent of the added systems are smaller than 10 kW
The evaluation of the installation of new systems by system class essentially shows that the <10 kW size range has remained constant since 2014 with an average share of 82 percent. Rooftop systems over 10 and up to 100 kW had a heyday between 2004 and 2011, when their share of new installations - in relation to the number of systems - averaged 43 percent.
Growing part of the added capacity is due to large rooftop systems
When examining the increase in capacity by plant class, it becomes clear that the high share of the <10 kW plant class in terms of the number of plants is only reflected in a high increase in capacity to a limited extent. The share of the plant class has remained fairly constant at an average of 19 percent since 2014. One system segment whose relative share of capacity growth has increased sharply is the system class of rooftop systems from 100 to 750 kW. From 17 percent in 2012, their share has more than doubled to 38 percent in 2019. In contrast, the importance of ground-mounted systems has declined from 45 percent in 2012 to 20 percent in 2019.
More than half of the PV systems will no longer be built in Bavaria and Baden-Württemberg
The two states of Bavaria and Baden-Württemberg accounted for an average of 59.6 percent of new installations in Germany between 2000 and 2009, and this share declined to an average of 44.5 percent between 2010 and 2019. Over the same periods, North Rhine-Westphalia increased its average contribution from 14.1 to 18.3 percent, Lower Saxony's share rose from 6.5 to 9.2 percent, and Brandenburg's share increased from 0.7 to 2.2 percent. All the remaining federal states also recorded increases, albeit to a lesser extent. Despite the decline in their share, Bavaria and Baden-Württemberg remain in first and second place in terms of new installations in 2019, with 24.4 percent and 18.6 percent respectively. This is followed by North Rhine-Westphalia, Lower Saxony and Hesse with 17.9 percent, 9.2 percent and 6.1 percent respectively.
73 percent of newly installed PV systems are limited in their capacity
Only around a quarter of the newly installed plants in 2019 do not have any output limitation. According to the EEG, 66 percent of newly installed plants may only feed a maximum of 70 percent of their output into the grid because they do not have remotely controllable feed-in management. This proportion has grown by an average of 4 percentage points per year since 2014. The remaining output-limited plants have even higher limitations of 60 to 50 percent as a result of the combination with a battery storage system.
Increasing proportion of PV systems facing east and west
While the share of PV systems with southern orientation decreased from 61 percent in 2000 to 42 percent in 2019, the share of systems with eastern and western orientation increased at almost the same rate: east from 1 percent in 2000 to 7 percent in 2019, west from 3 percent in 2000 to 9 percent in 2019, east-west from 1 percent in 2000 to 6 percent in 2019.
Plants are increasingly being built with a lower angle of inclination.
The share of added PV systems (rooftop and ground-mounted) with a tilt angle of less than 20 degrees averaged 10 percent between the years 2000 and 2009. Subsequently, between 2010 and 2019, the share increased to an average of 19 percent. Systems with 20 to 40 degrees of tilt accounted for an average of 63 percent between 2000 and 2009, falling to 54 percent between 2010 and 2019.
with a focus on solar energy, neighbourhood concepts and funding
The BUND yearbook Ökologisch Bauen & Renovieren (Ecological Building and Renovation) published by the Bund für Umwelt und Naturschutz Deutschland (BUND) helps by making owners fit for discussions with the house bank, architect, energy consultant and craftsmen. The guidebook, which will be available from November, shows what can be done and how: Based on numerous house portraits, the annual compendium helps the reader to find out which measures, building materials and technologies are most suitable for their own project.
Written in an understandable way and clearly presented, with many examples and suggestions, the 244-page "BUND Yearbook 2019 - Ecological Building and Renovation" offers an all-round service for builders and renovators. The booklet offers six topics: basics/planning, model houses, green around the house, building envelope, building services and interior design. Furthermore, state funding opportunities are presented. With in the focus this time quarter concepts for less surface consumption and more togetherness stand. In addition, long-term experience with solar thermal energy and innovations in photovoltaics and solar power storage.
sdg21 comment: There is no comparable publication for the low costs. For this one must accept that a not insignificant part is occupied by advertisements, which are however thematically relevant. Strongly contradictory is however the request of the BUND to reduce the surface consumption, but then in the booklet almost throughout only examples of single-family houses to show. The few sustainable quarters, multi-storey residential buildings or housing estates are almost lost. The title "Neighborhood Concepts" promises more than the publication actually delivers.
The 244 A4-page handbook can be purchased at a price of 8.90 Euros at major kiosks, station bookstores and BUND offices.
Or (plus 2.00 Euro shipping costs) can be ordered from the publisher: Target marketing, Gerberstr. 5f, 70178 Stuttgart, Tel. 0711/96695-0, bestellungen@ziel-marketing.de.
The complete yearbook or individual articles are also available as an e-paper via the publisher's website www.ziel-marketing.de.
At thefirstnGroßveranstaltung in theGrand Palais Éphémère on demChamp–de–Mars celebratedthe 10th International Timber Construction Forum FBC an appearance, dhePresident himself Macron and his ministers draws attention to building with wood. Like never beforenat the anniversary appearance of the French Timber Construction Forum Content and packaging together. As an advertisement for timber construction, the temporary Grand Palais Ephémère for itself. In keeping with this, the Auditorium Ephémère was created especially for the Forum. made of curved CLT–Panelsand the also for this issue developed Mstands "Belleville" from hardwood. Thiseconvincing Embedding the Message via den Change in Direction Building with renewable raw materials drew not only 6800 registered visitorsto, sondern also two Minister and the President of the Republic, Macron. The intention, announced shortly thereafter, to Aid approved a year ago for the forestry–and timber sector by 100 million euros, stands unmistakably in the Contextto this performance.
Die so far last Presentationthe wood industry in Paris hieß'Paris Capitale'and transformed the Champs–Elysées in a Garden. For This event saw the industry reach far more into the Bag, as it at 10. International Holzbauforum was the case. In the area of the Wood construction leaves itself the Effect of the 10. Forums only with the Exhibition via Wooden houses compare the the Architect Roland Schweitzer 1979 at the Centre Pompidou organised. It was attended by over one million Peoplevisited and marks the beginning of modern timber construction in France.
A future for us all
For the Organiser of the Forums was it important, the Industryeffectiveto present, um dhe current Often medial Mood against Wood processingto invalidate. So came it to unique Designing a concept for low-emission Events with the help of wood. "Réservez un futur":"A future reserve“! An important Strategic approach: The Emissions of the Trade fair presentation to reduceen throughRenunciation, Repurposing and Recourse at renewable Building materials. The Forum waived at Carpeting, set Wooden tablesan, the aus the Doors of a dissolved Paris hospitalcreated are,and developed new flexible Trade fair facilitiesmade of wood.
emission, compensation and perception of the "Ecologically designed timber construction" forum.
Go to second Part the Strategy belongs the Investigation of the Life cycle of a Timber Construction Forum and the Calculation the emissions of the 10th Forum. This Analysis helps denOrganisern, next steps towards emissions neutrality. What is considered emissions still remain is determined by the Planting arown designated Forest plotin Epinal/Nancy France compensated. All Parttaker have the Possibility, a Seedling for 6 Euro to Buy In this Case went it at the New planting a two Hectare large Plot north of Nancy with larches and Atlas cedars.
Thematically structured exhibition on the subject of timber construction
This approach had a consistent and invigorating effect on the visitors. The "Belleville" booths were attached to the Veranstaltion specialists GL Events sells,and the Auditorium interested the Organisersof the 2024 Olympic Games in Parisfor further use. The amalgamation the calculation of emissions and their compensaationthrough the Congress participant was received with goodwill and enthusiasm within the industry. After all, von originally estimated 2000 trees for 2000 congress participants/Insidea little more than 1300 sells become.Whereby some Visitors/Insideto to 150 Trees ordered. The Minister of Agriculture Julien Denormandie reached for his wallet during the passageonnaie and bought five seedlings, which he planted on die baptised the names of his children.
The conference programme is available
Even more important was thee media impact of the concept "Réservez un futur". More than400 articles appeared in the general press about the Veranstaltung. With this, the Forum made a huge leap into the public eye, and this also applies to all other events of the Timber Construction Forum. Above all, however, timber construction finally showed itself from a side that Challenges due to collectionwithstands the test of time. The 10th Forum truly ushered in a new era, provided that the French timber industry to take advantage of this historic opportunity toß. First Nagelprobe will in September implement the government's long announced and now The "Assises de la forêt et du bois" (forestry and timber assemblies) were–and timber industry). There the distribution of the additional money that has been promised.enbut only if the industry is willing to is to finally pull together. How this can succeedn, has the 10th Forum single-handedly impressively demonstrated.
Until now, only the printed summaries were available for this within the framework of the timber construction forums. Also forward-looking is the first-timeLive–Fromsthe conferences during the Forum. In French–Guyana and Canada made use of it. In this way the Timber construction forums to globalnEvents. Their impact in promoting timber construction is growing.
Epinal–Nancy from 6 to 8 April 2022
The next International Timber Construction Forum finds from 6 to 8 April 2022 in Épinal–Nancy instead of.
In 2015, a historic double success was achieved for sustainability and climate policy. The 2030 Agenda for Sustainable Development with its Sustainable Development Goals (SDGs) and the Paris Agreement on climate protection define an ambitious global target system. The group of the twenty most important industrialised and emerging countries (G20) should now resolutely press ahead with the implementation of both agreements and perceive the Great Transformation towards sustainability as a unique modernisation project that offers considerable economic development opportunities. For example, the complete decarbonisation of the global economy needed to avoid the greatest climate risks can only be implemented with a profound transformation of energy systems and other emissions-intensive infrastructures. The transformation inspires innovation and directs investments towards sustainability and climate protection, including in the sustainable infrastructures to be built and expanded. At the same time, the transformation can be used to fight inequality, i.e. to advance inclusion within societies as well as globally, and thus become a justice project.
The main recommendations of the report can be found here. Download the report. Order the print version
Federal Ministry for Climate Protection announces comprehensive emergency programme
Introduction
After a significant decline in the previous year, greenhouse gas emissions in Germany are on the rise again. Thus, around 762 million tonnes of greenhouse gases were released in 2021 - a good 33 million tonnes or 4.5 percent more than in 2020. Overall, emissions in Germany have thus fallen by 38.7 percent since 1990. The increase in the last year is particularly noticeable in the energy sector: This shows an increase of 27 million tonnes CO2-equivalents, as increased demand for electricity, lower electricity generation from renewable energies and the higher gas price led to increased use of coal for electricity generation. Electricity generation from renewables fell by seven per cent, mainly due to poor wind conditions. In the transport and building sectors, emissions were above the annual ceilings set by the Federal Climate Protection Act. This is shown by the latest calculations of the Federal Environment Agency (UBA), which are based on the specifications of the Federal Climate Protection Act and the EU-Renewable Energy Directive (RED) were presented today.
Climate State Secretary Patrick GraichenThe increase in greenhouse gas emissions has unfortunately become apparent. The Federal Government will now quickly counteract this with an immediate climate protection programme. The key is a much faster pace in the expansion of renewable energies. We must manage to install three times as much capacity as before in order to increase the share of renewables in electricity generation to 80% by 2030. There must be no more of the kind of stalemate we have seen in recent years. The Russian war of aggression on Ukraine has also made it dramatically clear to us how closely security and energy supply are linked. We can no longer afford to ignore this. That is why we must now quickly remove every stumbling block on the path to more wind and solar power. The faster shift away from fossil energies must encompass all sectors - from industrial production and buildings to mobility and agriculture. It is crucial to maintain the social balance in the process."
UBA-President Dirk Messner: "Almost half of the 2020 reduction in greenhouse gas emissions has already been lost. Our figures clearly show that the federal government's targets must be addressed as quickly as possible. We need to build more solar and wind power plants quickly. We must convert our buildings to heat pumps and stop installing oil and gas heating systems as soon as possible. We can also achieve a lot with our houses by saving energy, especially by making them more energy-efficient. This will also help to reduce our energy dependence on Russia. Each and every one of us can do something here that also helps the climate: heat a little less, leave the car parked more often or, if it is necessary, drive more slowly."
Current emission data in detail
Since 1990, emissions in Germany have fallen by 38.7 percent. The target for 2030 is a reduction of 65 percent. In 2021, there were increases in emissions compared to the previous year in almost all sectors. The available data show that since 2010, the energy transition in particular has contributed to the reduction of emissions. All other significant sectors have more or less stagnated since 2010.
In the sector Energy industry are with around 27 m. tonnes - this corresponds to 12.4 per cent more than in 2020. With around 247 tonnes, the m. Tons CO2-equivalents, however, emissions were still a good 11 m. There is no annual emission quantity for 2021 in the Federal Climate Protection Act for the energy sector. Emissions from hard coal and lignite-fired power generation increased particularly significantly due to the increased use of coal. The use of lower-emission natural gas, on the other hand, decreased in the second half of the year due to the significant increase in gas prices. The main reason for the increased use of fossil energy sources for electricity generation is the 17.5 TWh Significantly reduced electricity generation from renewable energies, in particular the lower wind power generation, and a 13.5 TWh increased gross electricity consumption.
At Traffic in 2021, around 148 m. Tons CO2-equivalents are emitted. This means that greenhouse gas emissions from this sector are both 1.2 per cent above the 2020 value and around 3 m. tonnes above the annual emission quantity of 145 tonnes permitted in the Federal Climate Protection Act for 2021. m. Tons CO2-equivalents. One reason for this is road freight traffic, which has risen again on the motorways to a level slightly above that of 2019. The CAR-In contrast, the level of traffic is still lower than before the Corona pandemic (2019), which is reflected in fuel sales figures and data from counting stations on motorways and trunk roads.
In the sector Industry emissions rose by a good 9 % compared to the previous year. m. Tons CO2-equivalents increased (plus 5.5 per cent). With around 181 m. Tons CO2-equivalents, they were almost at the 2019 level again, but just below the annual emission quantity of 182 m. Tons CO2- equivalents. Catching-up economic effects in the wake of the Corona crisis and increased use of fossil fuels play an important role here. The most significant percentage increase was in the steel industry, where crude steel production rose by around 12 percent. In the manufacturing industry (energy-related share), emissions increased by around seven m. Tons CO2-equivalents respectively 6.4 per cent.
At Buildings In 2021, there was an emission reduction of just under 4 m. Tons CO2-equivalents (minus 3.3 per cent) to around 115 m. Tons CO2-equivalents. Despite this reduction in emissions, the building sector, as in the previous year, exceeds the permitted annual emission quantity according to the Federal Climate Protection Act, which is 113 m. Tons CO2-equivalents. The reduction in emissions is mainly due to a special effect of significantly reduced heating oil purchases. Heating oil stocks were already increased extensively in 2019 and 2020 due to the favourable prices and in anticipation of the Fuel Emissions Trading Act. Natural gas consumption, on the other hand, increased due to the weather.
In the sector Agriculture Greenhouse gas emissions decreased by a good 1.2 m. Tons CO2-equivalents (minus 2.0 per cent) to 61 m. Tons CO2-equivalents. The sector thus remains significantly below the annual emission level of 68 m. Tons CO2-equivalents. The decline in animal numbers continues. Cattle numbers fell by 2.3 percent, pig numbers by 9.2 percent. As a result, there was less manure, which is why the emissions associated with fertilisation also fell (-4.0 percent compared to 2020). However, the significant undercutting of the set annual emission quantity is mainly due to methodological improvements in the calculation of emissions.
The emissions of the Waste sector fell by around 4.3 per cent compared to the previous year to a good eight per cent. m. Tons CO2-equivalents. This means that the waste sector once again remains below the annual emission level of nine m. Tons CO2-equivalents. The trend is essentially determined by the decreasing emissions from landfilling as a result of the ban on landfilling organic waste.
Further procedure under the Federal Climate Protection Act
The emission data for the year 2021 will now be reviewed by the Expert Council on Climate Issues, as provided for in the law. The expert council submits an assessment of the data within one month. After that, according to the law, the respective responsible ministries have three months to submit an emergency programme containing proposals for measures to bring the building sector and transport sector onto the intended target path in the coming years. However, the federal government is already working on an emergency climate protection programme that is intended to meet these requirements as far as possible.
Dirk Messner: "In order to achieve the German government's goals by 2030, six percent of emissions must now be reduced per year. Since 2010, the average has not even been two percent. To achieve this, Germany now needs a joint energy effort. Together, we must put all our energy into making ourselves independent of Russian energy and protecting our climate.
Current data on renewable energies
As early as 2020, the project, which was launched as part of the EU-Renewable Energies Directive (Renewable Energy DirectiveRED), Germany's binding target of 18 percent of gross final energy consumption was exceeded with 19.3 %. In 2021, the gross final energy consumption from renewable energies in the electricity, heating and transport sectors rose according to the calculation specifications of the RED further slightly to 483 Billion kWh an. This corresponded to a share of 19.7 per cent of total gross final energy consumption.
The main reason was that more renewable energies were used for heating and cooling due to the cold winter. For this reason - and because heating oil sales, which are decisive for the calculation of the share, also declined due to high inventories and rising oil prices - the share of renewable heat increased significantly from 15.3 to 16.5 percent in 2021. The heating and cooling sector accounts for more than half of Germany's total gross final energy consumption.
Electricity generation from renewable energies declined by seven percent in 2021 due to a comparatively poor wind year. At the same time, the expansion of onshore wind energy plants stagnated in recent years. The renewable share of gross electricity consumption fell accordingly from 45.2 percent in 2020 to 41.1 percent. Electricity consumption represents about a quarter of Germany's total gross final energy consumption. For the European monitoring according to RED the real decline in renewable electricity generation is, however, mitigated by a normalisation rule for compensating for weather effects over several years.
In the transport sector, the share of renewable energies in total final energy consumption fell from 7.6 percent in the previous year to 6.8 percent in 2021. This decline can be explained by special carry-over arrangements from earlier years under the greenhouse gas reduction quota and a higher crediting of upstream emission reductions. Transport is responsible for a good quarter of total energy consumption.
These and many other up-to-date and quality-assured data have been published in the background paper "Renewable Energies in Germany - Data on Development in 2021" by the Working Group on Renewable Energies Statistics (AGEE-Stat), which appeared today. The first available data on the use of renewable energies in the electricity, heat and transport sectors are supplemented by calculations on the associated avoided emissions and economic effects.
Further information: The accuracy of the data
The present emission data for the year 2021 represent the best possible calculation at present. They are associated with corresponding uncertainties, in particular due to the limited statistical calculation basis available at this time. The calculations are derived from a system of model calculations and trend updates of the detailed inventories of greenhouse gas emissions for 2020 published in January 2022.
The complete, official and detailed inventory data on greenhouse gas emissions in Germany for the year 2021 is published by the UBA in January 2023 with the transmission to the European Commission.
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