In contrast to combustion engines, the amount of energy required to manufacture the batteries plays a greater role in electric cars. According to the Heidelberg IFEU Institute, one kWh of battery capacity can save around 125 kg of CO2-emissions. The production of an electricity storage system with 24 kWh therefore produces around three tonnes of CO2 emissions. In contrast, the emissions produced when building an electric motor are lower. As a result, the e-car has to reduce its driving emissions by around 2.74 tonnes of CO2 offset. This means that if we concentrate too much on the emission of greenhouse gases, we could end up reducing CO2-The overall balance of a product should not be lost sight of. The latest, most economical model is not always the best choice and the frugal use of an existing product is the better way. In short, a vehicle should not be purchased as long as the CO2-backpack has not been emptied.
NATURSTROM is expanding its largest local heating project to date in Markt Erlbach, Franconia. In future, the eco-energy supplier will supply more than 130 customers with sustainable and locally generated heat - not only households but also municipal buildings and a large commercial enterprise. On 2,400 m2 Bavaria's largest solar thermal plant is being built for this purpose.
In the current second construction phase, NATURSTROM is connecting more than 70 new heat consumers, including the largest customer, the honey bottler Breitsamer & Ulrich GmbH & Co. KG. The company is providing the land for an energy centre and Bavaria's largest solar thermal plant with an area of 2,400 m2 available.
"The current turbulence on the European energy markets shows that we in Germany absolutely have to make ourselves less dependent on imports of fossil fuels," says NATURSTROM CEO Dr Tim Meyer. "With the heating turnaround towards decentralised renewable energies, we are not only doing the climate a great favour, but also ourselves and our economy. The local heating supply in Markt Erlbach is a great example of how the changeover can succeed."
Since 2019, NATURSTROM has been supplying 40 consumers with ecological heat at long-term stable prices via a wood pellet heating centre. After completion of the second construction phase, the local heating network will be 6.4 kilometres long. In addition to numerous private households and the Breitsamer company, the heat consumers also include smaller businesses and municipal buildings such as the school, the indoor swimming pool and an event hall. "We are pleased that so many and such different players in Markt Erlbach want to be part of the local heat turnaround," says Meyer.
After connecting all consumers, the total heat demand in the network is around 5,350 megawatt hours (MWh) per year; by covering this demand from renewable sources, approx. 1,800 tonnes of CO2 saved. In addition to solar heat, NATURSTROM uses wood pellets from the region as fuel in the existing energy centre, and regional wood in the form of wood chips will also be used in the second energy centre once the second construction phase is completed. "With the raw material supply from the region, we can provide affordable and sustainable energy for our citizens in the long term. Especially for future generations, it is important to act decisively for climate protection," emphasises Markt Erlbach's First Mayor Dr Birgit Kreß.
The two energy centres and the local heating network are designed to be open to new technologies, so that modernisation and expansion to supply new consumers are possible.
The impetus for planning the local heating supply came from a renovation of the main street. The connection to the local heating network will mainly replace old, climate-damaging oil heating systems. Particularly due to the lack of gas supply infrastructure, more than 80 percent of the inhabitants in Markt Erlbach still used heating oil before the start of the first construction phase.
The discussion about climate change and the growing demand for living space have increasingly brought timber construction into the focus of planners, architects and developers over the past year. After all, sustainable timber construction can make a significant contribution to climate protection and the creation of living space. The increased interest in timber construction is also reflected in the industry figures: the turnover of companies grew by 7 percent in 2019 compared to the previous year, the number of employees increased from around 68,000 to around 70,000 and the timber construction rate continued to grow in both residential (new construction) and non-residential (new construction) construction.
Holzbau Deutschland has published these and other facts, figures and forecasts on the structure of the sector, market and economic trends, the business situation and financing, as well as training and careers in the carpentry and timber construction trades in its "Situation Report Carpenters / Timber Construction 2020" published. It can be downloaded free of charge from the Association's website in the Business Administration section.
Even after Corona: Continue to drive forward climate protection
At the conclusion of the 11th Petersberg Climate Dialogue last week, German Chancellor Angela Merkel appealed that in the period after the Corona crisis, "when we launch economic stimulus packages, we should always keep climate protection firmly in mind and make it clear that we are not cutting back on climate protection, but investing in technologies that are fit for the future."
Timber construction has long been one of the sustainable technologies that can make an essential contribution to achieving climate protection goals. "Ecological, sustainable and resource-saving construction with wood must therefore continue to be the focus in residential construction as well as in redensification and gap filling in existing buildings. In order for timber construction to be recognized as an alternative on an equal footing with other construction methods, the framework conditions must be further improved and the building codes of the federal states must be adapted to the current state of the art," demanded Peter Aicher, Chairman of Holzbau Deutschland.
The current and further development in timber construction
Until the outbreak of the Corona pandemic, the mood in the timber construction industry was good. The satisfaction of carpentry and timber construction companies is also reflected in the Holzbau Deutschland business survey, in which almost 370 companies took part at the turn of the year 2019/2020. Their order backlog at the beginning of the year already averaged 17 weeks (previous year 15 weeks). The current exceptional situation in the wake of the Corona pandemic has not changed this much: According to recent surveys, most businesses are going about their work without any significant restrictions and in compliance with clearance and hygiene rules. Builders are also sticking to their construction projects. Many timber construction companies are currently benefiting from the existing high order backlog. For some of them, the workload will last until next year.
How turnover in timber construction will develop in 2020 and beyond, and what impact the Corona pandemic will have, cannot be reliably assessed at the present time. Regardless of the current situation, the timber construction industry has assumed a further 5 percent increase in sales by the beginning of March. The value is also based on the cautious confidence of the entrepreneurs from the economic survey of Holzbau Deutschland.
28:21 min, recorded 10/29/2020, released 11/30/2020.
Thomas Pfohl leads the discussion of the Baden-Württembergische Genossenschaftsverband e.V. with Dr. Stephan Anders (DGNB).
It deals with the tasks and fields of activity of the respective organisations in the area of neighbourhood development for the professional support of the initiatives involved in the project as well as their assessments with regard to the implementation of neighbourhood projects in the legal and corporate form of the registered cooperative.
While two large providers are planning a merger, another company is entering the market in Munich with Oply. But it is still open when the city can actively promote the rental system.
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