The German electricity grid must be shaped and designed for security and sustainability. Arvid Gillert, Senior Manager Energy Technology at the Association of the German Electro and Digital Industry (ZVEI), explains how this can be achieved and what German companies have to offer.
Technology openness
tec.news: ZVEI is speaking of the "evolution of the network ... through the development of network technologies" and call for technology openness. What exactly do you mean by open technology?
Arvid Gillert (AG): The grids are facing tremendous challenges: on the one hand, more and more volatile generators need to be integrated, while on the other, developments such as electromobility are upping the demands made on grid capacities. In this context, technology openness means that the technologies deployed must be tailored to the specific requirements – without being unnecessarily restricted by historically evolved specifications. The technical connection conditions of the grid operators, for example, are often too strongly focussed on individual solutions. Instead, we should focus on available and near-series technologies in order to be able to scale faster and boost network efficiency.
Evolution not revolution
Does that mean you are intentionally not talking about a revolution, but an evolution with existing means?
AG: As part of a study, we have compiled profiles of technologies that are already available today, but are not yet sufficiently utilised from our viewpoint. Intelligent local substations are a good example. There is still considerable potential in the use of such technologies – especially with regard to the digitalisation of network components. We can already make significant progress here with existing resources without having to wait for revolutionary new developments.
Incentives and appropriate regulation
ZVEI is also calling for incentives and appropriate regulation. What do incentives look like? And where are the specific regulatory levers?
AG: The current regulatory framework is still strongly orientated towards the structures of the past. To date, network operators have had little incentive to invest in matters such as the digitalisation of their networks – they have mainly implemented what has been promoted by regulation. The Federal Network Agency is now sending out important signals by focussing on so-called energy transition expertise: Grid operators should position themselves for the future and take the necessary steps, such as a forward-looking grid expansion, at an early stage. So far, there has been a lack of incentives here and the grid operators have only pushed ahead with grid expansion to the extent that is directly necessary. Given the increasing requirements of electromobility and heat pumps, for example, grid expansion cannot wait until the demand is there – things must be handled proactively.
Keyword 'climate neutrality network'
The trade association is driving forward standardisation and development. Where do you see Germany and the industry in terms of infrastructure expansion, the introduction of climate-friendly technologies and the digitalisation of grid components?
AG: Germany is not in an unfavourable position – the progress made in recent years should also be emphasised. Looking at the figures for 2024, 52 per cent of electricity consumption will be covered by renewable energies. In 2005, the figure still stood at 10 per cent. The infrastructure is also solid overall and provides a good foundation. The task now is to expand on this and make things fit for the future. Digital solutions play a key role here. The manufacturers organised in ZVEI already have numerous innovative technologies in their portfolios. Now it's all about scaling, where Germany needs to do even better. Consequently, we still need physical expansion in Germany. But it will not succeed without harnessing digital solutions.
Germany is not in an unfavourable position – the progress made in recent years should also be emphasised.
Arvid Gillert
Senior Manager Energy Technology, ZVEI e. V.
Order volume until 2045
More than 500,000 kilometres of cable in addition to some 500,000 transformers will be needed by 2045. That would be an attractive order volume for local companies. Aren't ZVEI member companies formally offering themselves as suppliers here?
AG: That is de facto the case. The ZVEI Energy Technology Association, which represents the relevant manufacturers, is particularly aware of these tremendous demands. This is also reflected in investments – both in personnel and in the expansion of production capacities. However, there is a certain drop of bitterness here: these investments do not always take place in Germany and Europe. Here, too, we are facing global competition. Where better location conditions prevail, investments will ultimately be made. Politicians could take countermeasures here – by reducing bureaucracy and streamlining authorisation procedures.
Problems and success stories
Where do you currently see sector coupling unfolding? Where is the problem and what are successful examples?
AG: We are right in the midst of this, but there is still a lot to do. We are seeing successes on the feed-in side and progress is also being made in terms of grid expansion. We have the impression that network operators have also recognised the needs and are taking action. However, consumers also appear to be disconcerted to some extent by politics when it comes to switching to electricity-based technologies and the price of electricity itself. In order to counter this uncertainty, it is important to consistently relieve the electricity price of all levies and to incentivise grid-friendly behaviour by way of pricing signals. This is how we are driving the energy transition forward – and thereby also sector coupling at the same time.
Generation and expansion requirements in German electricity distribution networks up to 2045 (Source/Data basis: ZVEI, BDEW)
Christian Otto
Position: tec.news editorial team