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Loading stations: Government rejects foreclosure of underground car parks

Saturday, August 19th, 2017 | Gadgets

The federal government is allegedly refusing the mandatory cabling proposed by the EU Commission for new residential buildings for electric car charging stations. At the Council of Ministers of Energy on 26 June in Luxembourg, the German representative, Secretary of State for Economic Affairs, Rainer Baake, had voted against the plans, reported the news magazine Der Spiegel. Instead, empty pipes should be routed.

The EU Commission's draft Directive on Building Efficiency currently states that "Member States shall ensure that pre-cabling is carried out in new residential buildings and residential buildings undergoing extensive renovations, each with more than ten parking spaces The construction of charging points for electric vehicles for each parking lot. " In addition, in the case of new or extensively renovated commercial buildings from 2025, every tenth parking lot should be "equipped for use in the context of electromobility".
Government warns against high costs
This was "rejected by Germany as by a large majority of the Member States too largely", according to Spiegel in a report for the Council. Instead, for example, there should be only one load column for non-residential buildings with more than ten parking spaces. In the case of residential buildings, no pre-cabling is planned at all, instead, empty pipes should be laid.
Germany had argued that the "electric station" proposed by the EU would have led to "a cost explosion for much-needed new housing". Experts in the Ministry of Economic Affairs and the Environment also said that empty pipes are more sensible than a pre-cabling, because "the copper to be laid can be installed in a manner which is suitable for the needs and is resource-conserving".

How useful is pre-wiring?
If you retrofit an underground car park with a charging infrastructure, you must overcome many hurdles. It is, therefore, obvious to provide for this already when building a new building. However, the question arises, how useful is a forced cabling of all parking spaces in an underground car park or on an outside ground. Finally, when a new dwelling is built, it is not possible to assess whether all owners or tenants will actually have an electric vehicle.
It is also open whether the users want to charge their vehicle for example via a powerful three-phase current connection or only single-phase.
It would indeed be a waste of resources to supply all parking spaces from the outset with a line for a 22 kilowatt three-phase charger. However, a "cost explosion" with a new living space would hardly be feared. The additional costs per parking space would be between 1,000 and 2,000 euros or less. Expensive probably probably the actual Wallbox, which still comes.
Empty pipes senseless
It is equally pointless, however, to equip the underground garage with empty pipes. After all, the cables are already laid on plaster in pipes, which should generally not be a problem afterwards. For larger supply lines, such as a subdistribution, a cable tray is installed. It could be more sensible to prescribe wall penetrations in order to lay the power lines more easily from the house connection to the loading stations. Fire protection plays a major role here.
For outdoor parking, however, a pre-installation of the infrastructure is recommended, since the cables can only be installed at a high cost. In this case, too, it is difficult to prescribe the legal solution for every building. If you are building a high-performance cable for a subdistribution and installing a distribution box, you should not be wrong.
What is decisive, however, is that the building has sufficient power reserves to be able to provide the vehicles with sufficient electricity at the same time in all parking spaces. Here the electricity grid operators warn already, that this could be too expensive for them. The new federal government therefore has a lot of work to do after the election, if it really wants to promote electromobility in Germany.


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