Kategorie für Blog: Climate protection

Happy Birthday, Passive House!

The passive house turns 30 - pioneering work paves the way for energy efficiency worldwide

The passive house celebrates its 30th birthday! The pioneering project of building physicist Prof. Wolfgang Feist, which started as an experiment, can take great credit: When climate protection was only on the agenda of very few, it paved the way for energy efficiency in buildings. Today, the Passive House Standard is being implemented around the globe, including in impressive lighthouse projects. Other reasons to celebrate: the 25th anniversary of the Passive House Institute and the anniversary edition of the International Passive House Conference.

25% of Europe's greenhouse gases come from buildings - scientists call for policy change

To live up to its climate change pledge under the Paris Agreement, the European Union must ensure that all 250 million existing buildings, as well as all new buildings in the EU, produce near-zero greenhouse gas emissions. In a new report, European national academies of science, through their association EASAC, call for far-reaching policy action. "Policies have long focused on creating energy-efficient buildings that require less heating and air conditioning or generate renewable energy on site. However, the energy used to operate buildings is only part of the story. We need to broaden the scope and look at emissions from building materials and methods - both for new buildings and for building refurbishment," says William Gillett, Director of EASAC's Energy Programme.

Fraunhofer ISE short study: Increased construction of large rooftop PV systems with small tilt angles

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.

After decision in Spain and WHO demand: German Environmental Aid demands 30 km/h speed limit in built-up areas by 2021

  • Other countries are leading the way: Spain adopts 30 km/h speed limit in cities; French cities with 30 km/h speed limit have 70 percent fewer fatal accidents
  • Federal government fails "Vision Zero" and ignores 30 km/h as an immediate measure in key points paper for new road safety programme
  • Current United Nations Road Safety Week identifies reduction of speed limit to 30 km/h in built-up areas as key measure to protect lives

Explanatory film: Energetic urban redevelopment

Exploit potential at neighbourhood level!

The KfW programme "Energy-efficient urban refurbishment" promotes integrated energy-efficient neighbourhood concepts and refurbishment management with programme part 432. Programme parts 201 and 202 provide investment support for cross-building and infrastructural supply systems. The Federal Ministry of the Interior, for Building and the Home Affairs provides the funding for the energy refurbishment process from the individual building to the neighbourhood from the Energy and Climate Fund (EKF).

Further information:

"International Day of Forests" on 21 March

Storms, drought and insect infestations have caused a great deal of damage to Germany's forests over the past three years. The "International Day of Forests" on 21 March is a good time to become aware of the many services provided by the forest.

Use calamity wood constructively

"The raw material wood is precious. It is therefore important to use it responsibly and in a way that conserves resources," warns Peter Aicher, Chairman of Holzbau Deutschland. Even if wood is affected by environmental influences or the bark beetle, it does not represent an inferior raw material, but has almost identical properties to conventional construction timber. "If the so-called 'calamity wood' has the same structural quality in terms of load-bearing capacity as conventional sawn timber, it can be used without restrictions," explains Aicher. In addition, the wood retains its important function as a CO2 sink, regardless of external impairments.

Climate protection foundation Baden-Württemberg starts

The state of Baden-Württemberg is setting an example in climate protection: by 2040 at the latest, the state administration is to operate in a climate-neutral manner. The new Climate Protection Foundation supports it in this by using the interest on its share capital to promote research and development as well as educational projects in the field of climate protection. In addition, the state, municipalities, companies and all citizens can offset their CO2 emissions through compensation payments and thus become climate neutral. The cooperation partner will be the non-profit climate protection organisation myclimate Germany.

Arte film clip (26 min., 2017) about Sweden's EcoCity Malmö

26 min, Available from 31/12/2020 to 07/03/2021, Film from 2017.

"New large-scale construction projects and ecological innovations ensured that Malmö today has become a prime example of the direct transition from industrial metropolis to sustainable Eco City. The secret recipe: the city relied not only on innovative technologies, but above all on the active participation of citizens in the change."

Hamburg decides to make photovoltaics compulsory from 2023

On 22.12.2020, the Senate passed the first legal ordinance on the Hamburg Climate Protection Act. This regulates the concrete implementation of the solar roof obligation and the integration of renewable energies when replacing heating systems. With these regulations, Hamburg is one of the pioneers in climate protection in the building sector nationwide.

DGNB study: No additional costs for sustainable construction

A new study from Denmark takes a look at the costs of sustainable building construction and shows that more sustainable does not automatically mean more expensive. On the contrary. The study by Buus Consult on behalf of the DGNB system partner from Denmark, the Green Building Council Denmark, now provides clarity. In the study, it takes a close look at 37 DGNB-certified buildings.

A4F Webinar "Building Evaluation with the Resource Score" (11/2020)

1 h 03 min., published: 18.11.2020

Klaus Dosch (Faktor X Agentur + ResScore GmbH) presents the Resource-Score, a pragmatic and generally understandable label for resource- and climate-friendly building.

Construction projects or more information on the subject:

What does the EU's CO2 reduction target mean for the German energy transition?

In the context of the Green Deal, the EU's tightened targets on the path to climate neutrality envisage a reduction in CO2 emissions of 55% by 2030 and 100% by 2050. Against the background of these tightened parameters, the question arises as to the impact on the energy transition in Germany. Based on its energy system model REMod, Fraunhofer ISE has calculated the consequences of the new EU targets for the expansion of renewable energies in Germany and now presents the results in a short study.

EU climate targets: 55% less greenhouse gases instead of 40% so far

The EU today agreed on stricter climate targets. Accordingly, greenhouse gases are now to be reduced by at least 55 percent below the 1990 level by 2030. Previously, the target was 40% for the same period. For the first time, the EU calculations also include the greenhouse gases stored in forests and other "sinks".

Lower Saxony passes climate protection law

On Wednesday, December 9, 2020, the Lower Saxony state parliament passed what Lower Saxony's Environment and Climate Protection Minister Olaf Lies called a "very important and groundbreaking" law: With the Lower Saxony Climate Act, the topic of climate protection is anchored in the state constitution, the state-wide energy demand is to be completely covered by renewable energies by 2040 and Lower Saxony commits to climate neutrality by 2050. Lies: "With this, we have a law that does justice to the importance of climate protection as the central social task for the coming years and decades. It sets an important course for the future. This is what this state government and the parliamentary groups that support it stand for - setting realistic goals that can also be implemented. We are setting standards and probably have the most ambitious climate law in the whole of Germany! We are consistently pursuing our goal of making Lower Saxony the No. 1 climate protection state. We are already the No. 1 energy state, and we will also achieve this in climate protection!"

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Transfer platform energiewendedörfer.de

With the portal https://energiewendedörfer.de the University of Kassel and the Georg-August-University Göttingen present first results from the joint project "Innovative concepts and business models for sustainable bioenergy villages - climate-friendly, democratic, close to the citizens". In particular, concepts for bioenergy or biogas plants are being developed that can enable continued economic operation following the previous 20-year EEG phase.

Advice on plug-in solar devices from the consumer advice centre and DGS

The German Solar Energy Society e.V. (DGS) and the energy advice service of the consumer advice centre have been cooperating with each other since 1 December 2020. Consumer enquiries from both institutions are answered by the energy advisors of the consumer advice centre. In return, the DGS trains the advisors of the consumer advice centre in the subject area of plug-in solar devices.

Book review "Wohnquartier in Holz - Mustersiedlung in München" DBU Bauband 4

The ecological model settlement on a former barracks site in Munich sets new standards in timber construction. Various timber construction methods and building types up to seven storeys are being tested side by side in eight building projects with the aim of a final scientific evaluation. Timber frame, timber frame and timber hybrid construction methods are being used.

State of Lower Saxony launches funding programme for battery storage systems

The state of Lower Saxony has launched a new funding program for battery storage. The funding guidelines were published in the Lower Saxony Ministerial Gazette on 21 October. Applications can be submitted to the NBank with immediate effect.

The grant funding of up to 40 percent of the net investment costs of a battery storage system applies in connection with the new construction or expansion of PV systems (at least 4 kWp). In addition to natural persons, grant recipients can also be companies, legal entities, municipalities and many others.

Höfken: "Withdraw capital from fossil sectors - invest in green technologies of the future".

Months of a solar system

"To be climate neutral by 2050, we not only need to make additional investments in green and innovative technologies of the future. Above all, we also need a shift from existing investments in 'brown' raw materials such as coal, oil and gas to 'green' climate-friendly technologies. The phase-out of fossil fuels must be global and rapid, in line with the goals of the World Climate Conference. Only in this way can we realistically achieve the climate protection goals. Churches, municipalities and also companies are setting new standards here and demonstrating the feasibility of the changeover in both ecological and economic terms," said Environment Minister Ulrike Höfken today at the event "Divestment and Sustainable Finance", which took place during the Climate Protection Weeks in Rhineland-Palatinate.

TRASIQ 2: Transformative strategies for integrated neighbourhood development

Since April 2020, the Öko-Institut has been conducting research into how urban neighbourhoods can be sustainably transformed, using two neighbourhoods in the swarming city of Darmstadt as examples, in the project Transformative Strategies for Integrated Neighbourhood Development (TRASIQ 2). The Federal Ministry of Education and Research is funding the project, which is led by the Öko-Institut and involves the City of Darmstadt, the Institute for Regional and Urban Development Research (ILS) and the "Team Ewen" agency.

Mobility, heat and living space

The project focuses on the research topics of mobility, heat supply and efficient use of living space. Heat supply is an important key to climate-friendly living. How and where, for example, can district heating be expanded in existing properties? How can we increase the share of renewable energies in the heat supply? The size of the living space also contributes to how environmentally friendly a person lives. What needs to be done to ensure that people have the living space they need in their particular phase of life through intelligent apartment swaps? How can neighbourhoods be redesigned so that residents can organise their mobility ecologically?

BUND research award for dissertation on "Transparency in rent increases after energy-related renovations".

Dr. Kirsten David, a researcher at HafenCity University (HCU) Hamburg, has developed an innovative method for determining rent increases after energy efficiency measures: By means of functional cost splitting, rent increases become appropriate and comprehensible. The planning of the energetic measures is also ecologically optimized. For her dissertation entitled "Functional Cost Splitting for the Determination of Rent Increases after Energy Efficiency Measures", the scientist today receives the "BUND Research Award 2020". With the research award, the Bund für Umwelt- und Naturschutz (BUND) honors scientific work on sustainable development.

eAutos: Promotion of private charging stations as of November 2020

Grant of 900 euros per charging point For charging stations at privately used parking spaces of residential buildings For owners and condominium owners' associations, for tenants and landlords The electricity must come 100 percent from renewable energies Applications for funding can be submitted to the Kreditanstalt für Wiederaufbau (KfW) from 24 November 2020. Information: […]

Berlin tenant power project with 500 kWp

Wohnungsbaugenossenschaft Neues Berlin and Berliner Stadtwerke have agreed on another joint tenant power project. Six solar power systems with an output of around 500 kilowatts are being built in the Mühlengrund housing estate in Hohenschönhausen. Tenants of more than 1,100 apartments will soon be able to benefit from green electricity from their own roofs.

Higher CO2 price for heat and transport from January 2021

From 1 January 2021, climate-damaging fossil fuels will be subject to a price of 25 euros per tonne of CO2 is proven. This means that oil and diesel will become more expensive by 7.9 cents per litre, petrol by 7 cents per litre and natural gas by 0.6 cents per kilowatt hour. Citizens will be relieved of the additional costs, among other things, by a reduction in the price of electricity. The amendment, which had already been passed by the Bundestag on Thursday, also passed the Bundesrat today. The Fuel Emission Trading Act (BEHG) is designed to reduce CO2-price in the form of national certificate trading for the heating and transport sectors.

Wuppertal Institute study presents key points for 1.5 degree target

Glaciers are melting, sea levels are rising, heat waves and heavy rainfall are increasing: The consequences of climate change are visible and tangible worldwide, and the window of opportunity to act is shrinking. In order to significantly limit the global effects of climate change, the emission of greenhouse gases on earth must be drastically reduced. The agreement reached by the international community in Paris in 2015 sets the goal of limiting global warming to well below 2 degrees Celsius, but preferably to 1.5 degrees Celsius. Now, the Wuppertal Institute presented a study with possible cornerstones that can help to achieve the 1.5 degree target by 2035. The study shows that a climate-neutral energy system by 2035 is very ambitious, but in principle feasible, provided that all possible strategies from today's perspective are bundled. This requires, above all, bringing forward and intensifying measures that are described in many studies as necessary to achieve greenhouse gas neutrality by 2050.

World's largest solar heating plant in China

Solarserver reports on the world's largest solar heating plant, which has been in operation in China since 2016. It consists of parabolic trough collectors.

On the roof of a XuChen factory hall next to the company headquarters, there are 22,000 m2 collector area, a further 71,000 m2 collector area are implemented as ground-mounted systems. Together they deliver an output of 65 MWth. With concentrating collectors, it would thus be the largest solar heating plant of its kind. An even larger one is the Danish Silkeborg plant (110 MWth)which, however, is equipped with a different collector technology.

By way of comparison, the largest German solar thermal plant supplying a housing estate, neighbourhood or district currently has just 14,800 m².

Hydrogen strategy: EU must end subsidies for fossil fuels

Hydrogen is an important alternative for sectors stuck in the fossil fuel economy. As national governments and European parliamentarians negotiate the EU's hydrogen strategy, EASAC issues a new commentary. "Hydrogen can help reduce our dependence on fossil fuels," says William Gillett, director of EASAC's energy programme. "But the climate benefits are limited if we use fossil fuels to produce it - even with carbon capture and storage. The EU must put an end to fossil fuel subsidies. The fast-growing demand for hydrogen must be met by a massive increase in renewable electricity generation, along with certified imports from third countries."

DIW-Wärmemonitor: German households heat slightly less - CO2 emissions hardly fall at all

© DIW Berlin Annual DIW Heat Monitor based on data from energy service provider ista Deutschland GmbH: Heating energy demand in residential buildings declines again for the first time since 2015 - Rising prices, however, cause heating expenditure to increase by 2.4 percent - CO2emissions have fallen by 21 percent overall since 2010, but by only 2.6 percent when adjusted for temperature - Energy-efficient renovation in residential buildings almost stagnant

RLP: 14 million additional euros for solar energy

"Solar energy is a fundamental pillar of the energy transition. In order to further support this and to achieve our goal - a complete power supply from renewable energies by 2030 - we are further expanding our successful solar offensive: In addition to expanding the solar storage programme, which is in high demand, we are currently developing a solar register for Rhineland-Palatinate. In addition, we will also promote solar carports, balcony plug-in modules, wall boxes or agro-PV projects in the future," announced Environment and Energy Minister Ulrike Höfken during the event under the motto "Solar Offensive Rhineland-Palatinate: Investments for Climate and Economy" as part of the series "Wednesdays in the MUEEF" in Mainz today.

Climate change: Aquatic ecosystem research societies from around the world call for immediate action

"The world's water resources are currently facing the greatest threat in the history of mankind," write aquatic ecologists in their recently published statement paper. More than one hundred professional societies of aquatic ecosystem research around the globe have signed the joint statement. In it, the researchers show the dramatic effects that climate change is having on aquatic ecosystems worldwide. They call for immediate concerted action by politics, business, science and society to halt the progress of climate change.