Since September 2018, balcony PV modules may generally be connected in every apartment. Berlin has now greatly simplified the registration process. Berliners can thus become their own energy supplier with little effort and save cash.
Stromnetz Berlin GmbH has now greatly simplified the registration process. It now only requires an A4 sheet, which can be downloaded from the company's website. Various stakeholders from the ranks of Berlin's solar associations and companies collaborated on this simplification.
Balcony modules are already available for less than 300 euros and can recoup their initial costs through saved electricity costs after about four to six years. Due to manufacturer guarantees of up to 25 years for many of the devices, returns of up to 15 percent per year are possible. Before buying, it is essential to compare offers and prices.
market overviews, the DGS - German Society for Solar Energy offers the platform pvplug.com an. In addition, MachDeinenStrom.de is considered a reputable portal.
"Why do the same dreary apartment blocks have to be built everywhere?" asks F.A.Z. economics writer Nadine Oberhuber in Your post from 26.04.2017. She thinks "unambitious" is still the most harmless word of the viewers for the block architecture". As the main cause she quotes her F.A.Z. colleague and architecture critic Niklas Maak who observes a "radical economization of building", similar to the Bundesstiftung Baukultur.
Even the sustainable settlements cannot escape this pressure for returns and are becoming increasingly unimaginative, as I have unfortunately noticed in my observations over the last 20 years. "It's not pretty", as Gerhard Matzig puts it in his Contribution from 16.4. using the example of Munich's housing construction.
"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.
"If the wood is used as a building material, the carbon bound in the wood remains stored there in the long term, thereby significantly reducing the burden on the environment."
The goal must be an economically and ecologically sensible and efficient use of the domestic resource. In the interests of sustainability and climate protection, regional wood resources should therefore be used optimally.
Calamity wood is of high quality and can be used without restrictions
In most cases, bark beetle infestation is irrelevant for the use of the wood as a building material. The bark beetle lays its burrows in the bast, i.e. the area between the bark (bark) and the trunk, but not in the load-bearing wood itself. In addition, the sawn timber is technically dried during further processing. During this process at the latest, any remaining populations of insect pests are reliably killed off, so that beetle-free timber processed into sawn timber is guaranteed to be beetle-free. Every piece of sawn timber - regardless of its origin - must meet the criteria of DIN standard 4074 in order to be used as load-bearing timber in a building. In some cases, the wood turns a slightly bluish colour after a bark beetle infestation. It can then be used in the non-visible area.
Environmental factors and the effects of climate change have further facilitated the mass spread of the bark beetle in the past year. In most cases, rapid felling of the affected trees is the only alternative to stop the further spread of the pest. The logs are immediately removed from the forest and stored. This results in an oversupply of so-called 'beetle wood'. The prompt further processing of the calamity wood into sawn timber is an active contribution to climate protection.
Holzbau Deutschland appeals to the public sector as well as to architects and builders to make greater use of regional calamity wood and to specify this in tenders. The use of domestic calamity wood not only supports regional value creation, but is also a sign of solidarity with regional forest owners.
Since January 2017, building owners who have a residential building constructed and certified in accordance with the requirements of the DGNB have the opportunity to receive a grant for construction support from KfW. This covers 50 percent of the eligible costs up to a maximum of 4,000 euros per building project.
The grant is linked to the KfW product "Energy-efficient construction and refurbishment" and can relate to various services within the scope of DGNB certification, such as auditor services, specialist planning and the performance of measurements of indoor air quality or air tightness.
On the Sustainable Building Rating System (NBB), a new version of fact sheets is to be published shortly. In addition, the new eBNB system for the implementation of the NBB during planning and construction is about to be launched.
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