TenneT creates, invests and researches for the energy future

12.03.2020

Promoting the energy transition is a priority objective of TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO). This is clearly reflected in the TSO’s just-published Integrated Annual Report. As in recent years, the Annual Report is accompanied by the Green Finance Report 2019.

In line with the energy policy and climate goals of the Netherlands and Germany, TenneT increased its investments yet again in 2019 and spent €3.1bn on the energy transition and supply security (grid availability of 99.9998% in 2019). This financial commitment is even to be stepped up: TenneT is planning annual investments of €4bn to €5bn for the future. The financial performance of the company, with revenues of €4.1bn in 2019 and an EBIT (excluding special effects) of €753m, supports these ambitious plans. Manon van Beek, CEO of TenneT, has every reason to be content with the sound development of the TSO: “We have made great strides again in pursuing our ambition to achieve a sustainable energy future for everyone. Not only in realising and developing new onshore and offshore connections, but also by the required far-reaching international cooperation and working on innovations in close coordination with relevant stakeholders.”

As regards offshore connections, TenneT has already exceeded in 2019 the German government’s expansion target for offshore wind power capacity in the North and Baltic Sea, which is 6.5GW for 2020. With last year’s commissioning of BorWin 3, TenneT’s ninth offshore grid connection system in DC technology, the TSO now has a total of twelve offshore grid connections in operation (nine in DC and three in AC technology) with a total capacity of 7.1GW. But TenneT is not resting on its successes to date: The connection systems DolWin5, DolWin6, and BorWin5 are being developed and will increase the offshore transmission capacity provided by TenneT for wind farms in the German North Sea to almost 10GW by 2025. In addition, Borssele Alpha, TenneT’s first offshore connection system in AC technology in the Dutch North Sea, was installed on schedule and is now ready for operation. Borssele Beta will be completed in 2020.

Onshore, TenneT has eight transmission lines under construction in Germany, more than ever before. In the Netherlands, the 60km-long Randstad 380kV North Ring power line was put into operation, reliably supplying Europe’s most densely populated area with electricity and providing transmission capacity for green energy. At European level, the “green” COBRAcable deserves special mention, which since 2019 directly connects the Dutch and Danish markets for the first time. The German and Norwegian markets will also be directly connected by the NordLink cable, which is currently under construction. On top of this, a proof-of-concept for the North Sea Wind Power Hub has shown the technical feasibility of the concept of multiple wind power distribution hubs in the North Sea.

All these grid expansion projects are complemented by innovative solutions and intensive research to better utilise TenneT’s existing transmission system. These include vehicle-to-grid pilots, the deployment of home storage systems in grid stabilisation and digital solutions for higher grid utilisation. Another long-term innovation project is Element One, a 100MW electrolysis plant to be built in Germany to promote an integrated energy system.

TenneT presents Integrated Annual Report 2019 and Green Finance Report 2019 (picture: TenneT)

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TenneT participates in Ocean Renewable Energy Action Coalition

13.01.2020

The Dutch-German transmission system operator (TSO) TenneT is continuously increasing the amount of sea-generated wind energy transmitted ashore. The TSCNET shareholder is also the initiator of the pioneering North Sea Wind Power Hub concept that combines generation, storage and transmission of wind energy with a multinational interconnection of North Sea riparian states. Now TenneT is also participating in the just founded international Ocean Renewable Energy Action Coalition to promote the sustainable use of marine renewable energy and reduce the harmful effects of climate change.

Not only wind power but also floating solar, tidal and wave power count among the maritime renewable energy potentials. According to a report by the High-Level Panel for a Sustainable Ocean Economy, together they could provide almost 10% of the annual greenhouse gas emission reductions needed by 2050 to keep global temperatures below 1.5°C above pre-industrial levels. However, offshore wind energy is likely to make up the largest part of this climate protection potential.

The Action Coalition was established in response to the High-Level Panel’s September 2019 call for ocean-related climate protection activities and brings together civil society, intergovernmental institutions and industry. It will represent the offshore wind sector in the global dialogue on climate change and be led by the Scandinavian power companies Ørsted and Equinor. The total of eleven partners will develop a vision for 2050, highlighting the actions to be taken to sustainably expand offshore wind energy, thereby contributing to the UN’s sustainable development goals and global decarbonisation targets. First results will be announced at the UN Ocean Conference in Lisbon in June 2020.

TenneT is part of the Ocean Renewable Energy Action Coalition to promote the sustainable use of renewable marine energy (picture: TenneT)

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BorWin3 in operation

12.08.2019

The offshore grid connection BorWin3 operated by TSCNET shareholder TenneT in the German Bight is ready for feed-in since early August. This means that the total transmission capacity for offshore wind farms in the German North Sea is already 7.132GW. The Dutch-German transmission system operator (TSO) has thus not only met the German government’s expansion targets for sustainable North Sea wind power – 6.5GW by 2020 – but has significantly exceeded them.

BorWin3, TenneT’s twelfth offshore grid connection project, brings a further 900MW capacity. After BorWin1 and BorWin2, it is the third connection that the TSO has implemented near the East Frisian island of Borkum using DC technology. The corresponding converter and transformer station were built at TenneT’s Emden/Ost site to feed the green energy into the onshore extra-high voltage grid. BorWin3 bridges a total distance of 160km. The submarine cable is 130km long and the last section ashore to Emden/Ost is completed by underground cabling.

The TSO can be satisfied with its own offshore progress, but TenneT Managing Director Tim Meyerjürgens calls for further efforts, as the current rate of offshore wind expansion in Europe is not sufficient to achieve the goals of the Paris Climate Agreement. “An accelerated, large-scale and internationally coordinated expansion is necessary,” explains Meyerjürgens. In this context, TenneT has just presented a feasibility study of the North Sea Wind Power Hub concept for the implementation of wind power distribution hubs in the North Sea. Meyerjürgens points out that with an internationally coordinated approach the connection and integration of large offshore wind energy capacities could be much more effective and cost-efficient than with continued individual national planning.

In early August, the offshore grid connection BorWin3 of TenneT was put into operation (picture of the offshore converter platform BorWin gamma: TenneT)

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TenneT’s “sea harvest” increases

15.07.2019

9.51TWh – this is the considerable total amount of offshore wind power that TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO), transmitted from sea to land in the first half of 2019. This means that the first half of 2018 (8.17TWh) will be exceeded by a whopping 16%, while on the German market offshore wind energy accounts for a strong 15% of total wind energy generation. At the same time, the cost efficiency of new offshore grid connection systems has further improved in recent months through the standardisation of TenneT’s offshore grid connection systems and the combined expertise of TenneT as a leading TSO at sea.

With the connections currently planned and under construction, TenneT will increase offshore transmission capacity in the German North Sea to almost 9GW by 2024. However, current efforts in Europe will not be sufficient to achieve the climate targets of the Paris Agreement. TenneT therefore calls for a stronger expansion of offshore wind energy in Europe to create a low carbon energy future. TenneT COO Tim Meyerjürgens refers to international studies and scenarios that indicate that “an accelerated and large-scale roll-out is necessary”.

In this context, Meyerjürgens also points to the North Sea Wind Power Hub (NSWPH) concept, for which a positive feasibility study has just been carried out. The North Sea has great potential for offshore wind power, and the NSWPH consortium’s approach could result in 180GW of offshore wind power by 2045. Meyerjürgens explains: “A future internationally coordinated approach could implement the connection and integration of a roll-out of large-scale offshore wind energy more effectively and at considerably lower costs of up to 30% than with continued individual national planning.”

Offshore wind energy transmission by TenneT rose to 9.51TWh in the first half of 2019 (picture of SylWin Alpha converter platform: Tennet)

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Wind power hub promotes climate goals

10.07.2019

It’s only been a good three years since TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO), first presented the concept of a North Sea Wind Power Hub (NSWPH) to the public. From then on, the vision has taken concrete shape and the hub consortium has been consistently expanded, now including further TSCNET shareholder Energinet from Denmark, the port of Rotterdam and the Dutch natural gas company Gasunie, as power-to-gas applications are an important component of the concept.

In future years, when large wind regions in the North Sea are defined for development, it will be possible to implement several hubs to support the energy transmission infrastructure. These NSWPHs will then combine generation, storage and transmission of wind energy with a multinational interconnection of North Sea riparian states and thus promote the large-scale implementation and integration of offshore wind energy. The NSWPH partners have now presented the results of the project assessment phase. In recent months, they not only analysed options for the construction of wind farms in the North Sea, but also conducted a large number of studies, examined various scenarios and held intensive discussions with policy makers, leading offshore developers and non-governmental organisations.

The studies and investigations have confirmed the technical and economic feasibility of the hub concept. Furthermore, they have shown that large offshore wind capacities must be developed in the North Sea in order to achieve the goals of the Paris Climate Convention in due time. The targeted capacities range from 70 to 150GW by 2040 and up to 180GW by 2045. Depending on the scope of development, the NSWPH could lay the foundation to supply hundreds of millions of Europeans with green electricity. To take the concept forward, the Danish, Dutch and German governments as well as the European Commission are invited by the NSWPH consortium to consider setting up a consultation.

Studies confirm the climate benefits of the North Sea Wind Power Hub concept (picture: TenneT)

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Royal interest in the Wind Power Hub

07.03.2019

TenneT, the Dutch-German transmission system operator (TSO), had the honour of hosting high-ranking visitors. During the German-Dutch trade delegation meeting on 6 March 2019 in the German North Sea port of Bremerhaven, Manon van Beek, CEO of the TSCNET shareholder, presented the vision and current plans for the North Sea Wind Power Hub in attendance of the Dutch King Willem-Alexander and Queen Máxima.

The North Sea Wind Power Hub concept combines wind energy production, storage, and transmission with a multinational interconnection of North Sea riparian states. In addition to TenneT, the international hub consortium includes the Danish TSO Energinet, another TSCNET shareholder, the port of Rotterdam and the Dutch natural gas company Gasunie. Hence, power-to-gas technologies are also involved in the hub concept. A transnational transmission grid, controlled through a distribution hub in the North Sea and enabling the feed-in and distribution of vast quantities of offshore wind energy, would strengthen the whole European energy market and increase the security of supply across the continent.

The Dutch royal couple took great interest in the virtual and interactive model of the hub concept showcased at the meeting. Manon van Beek was most appreciative of this aristocratic concern: “We are especially pleased and honoured by the interest of the royal couple in the energy hub.” The TenneT CEO considers the Power Hub to be a valuable instrument in achieving the objectives of the Paris Agreement. In this regard, the royal visit was beneficial because the realisation of a low-carbon energy future “requires international cooperation and coordination, political momentum and courage and the support of non-governmental organisations”, van Beek concluded.

TenneT has presented the North Sea Wind Power Hub in the presence of the Dutch royal couple (picture: TenneT)

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Coupling of renewables and PtG for climate targets

11.12.2018

In order to achieve ambitious climate targets, a rapid expansion of renewable energy generation is essential. The German market still has great offshore potential in this respect. However, regenerative expansion makes no sense if the corresponding transport or storage capacities are lacking. TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO), is already known for its sustained efforts to significantly expand the transmission infrastructure in its control area as environmentally friendly as possible. But the TSO is also very active in the development of storage concepts, just consider, for example, the storage potential of the North Sea Wind Power Hub project or the “ELEMENT ONE” power-to-gas (PtG) pilot plant.

Together with Siemens and Shell, both global players in their respective fields, Tennet is now making additional efforts to promote the renewables as well as PtG. The three companies are convinced that green hydrogen will play a decisive role in the future energy mix as the basis for many power-to-X applications, which are technologies for storage and other uses of surplus electricity. TenneT, Siemens and Shell have thus commissioned a study on a new type of tender model for offshore wind capacity. This model intends to link the awarding of contracts for the operation of offshore plants to the production of hydrogen: The additional wind power from such facilities should not put too much strain on the onshore grid, but rather be used to generate hydrogen and even stablise the electricity grid. The green hydrogen can be transported via the gas grid and then be used in other sectors, such as industry or mobility.

Lex Hartman, Managing Director of TenneT, is determined to not squander any potential for renewable energies and convinced that PtG technologies provide flexibility, reduce the strain on the grid and make power supply more secure. “In the long term,” Mr Hartman continues, “the combination with hydrogen production can also be applied throughout Germany to other renewable energies. This advances the energy transition and helps to achieve our climate targets.”

TenneT, in cooperation with Siemens and Shell, proposes to couple offshore wind capacity tenders with PtG storage technologies (copyright photo composition by Stadtwerke Mainz)

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First TenneT Offshore Conference

07.11.2018

The EUREF Campus is the sustainability city quarter of the German capital Berlin with a climate-neutral energy supply and hence the ideal location for the first Offshore Conference of TSCNET shareholder TenneT, which took place on 6 November 2018. Headlined “Land in Sight – The Future of Offshore”, 170 decision-makers from politics, business and the media accepted the invitation of the Dutch-German transmission system operator (TSO) and took part in information panels, lectures and panel discussions. TenneT experts provided far-reaching insights into current pilot projects, information on ongoing studies, cooperations and concepts for future digital smart grid management.

“Offshore is a success story,” was how TenneT CEO Manon van Beek summed up the development to date. “Our conviction is that the second, decisive phase of the energy transition – the integration of 60, 70, 80% renewables and more – will only be successful if we address the issues in a bundled way.” This requires next to infrastructural improvements technical innovations, digitalisation, flexibility and the coupling of sectors.” Lex Hartman, Managing Director of TenneT, described the range of the TSO’s future-oriented approach: “From electric vehicles, blockchain storage and power-to-gas projects to the introduction of acceptability increasing underground cable technologies.” Wilfried Breuer, Managing Director TenneT Offshore, highlighted the company’s success in offshore development: “In the German North Sea, TenneT currently operates eleven offshore grid connection systems with a total capacity of 6,232MW to transmit wind energy from sea to land. This means that already now TenneT is almost completely meeting the German Federal Government’s expansion target of 6,500MW of offshore wind capacity by 2020.”

A key element of the conference was the North Sea Wind Power Hub, a visionary interconnection system that combines the generation, storage and transmission of wind energy with a multinational connection of the transmission systems of the North Sea riparian states. Also on display was an electric car already equipped with bidirectionally functioning batteries. As part of a pilot project, these batteries, which can both store electricity and feed it back into the grid, are used for redispatch. But what turned out to be the somehow “secret star” of the event was “ANYmal”, a special robot that – due to its highly developed motion characteristics – in test runs is already independently performing maintenance and repair work in TenneT’s onshore and offshore facilities.

TenneT held its first Offshore Conference in Berlin, Germany, which was attended by a prominent audience (picture: TenneT)

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Dutch-British WindConnector

14.06.2018

The idea of integrating electricity markets by means of connecting the electrical infrastructure of offshore wind farms is anything but new to TSCNET shareholder TenneT. The Dutch-German transmission system operator (TSO) has been researching the potential of interconnected offshore wind facilities for quite some time, most prominently in shape of the North Sea Wind Power Hub concept. Together with the Swedish energy group Vattenfall, which is also operating in the UK, TenneT has launched another offshore interconnection project, the WindConnector. In concrete terms, the WindConnector is destined to link a substation in the designated Dutch offshore wind area IJmuiden Ver to one of Vattenfall’s substations in British waters.

The two companies have signed a memorandum of understanding to jointly conduct a study on the technical feasibility, the regulatory challenges, and the benefits of such an offshore interconnector. The anticipated benefits to be confirmed by the study are: Enabling increased electricity trading between the Dutch and British markets, multiple and thus more efficient use of the offshore transmission infrastructure, which ultimately leads to a cost-saving effect since the additional investment is less than with a conventional interconnector. Mel Kroon, CEO of TenneT, comments on the WindConnector: “The fact that this study is done by a European market player and a European grid operator with both extensive offshore experience will prove to be of great value for the further development of offshore wind energy.”

Illustration based on a graphic on WindConnector by TenneT

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Cooperative study on Wind Power Hub

13.06.2018

“New approaches must be investigated to connect large scale offshore wind to the onshore grids,” says Mel Kroon, CEO of TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO). And TenneT certainly can not be accused of being inactive in this regard. For example, in order to support the integration of larger offshore wind volumes, the TSO is investigating the possibilities of an interconnected grid system, the North Sea Wind Power Hub. The hub concept combines wind energy production, storage and transmission with a multinational connection of the transmission systems of the North Sea riparian states.

To further expedite the development of the North Sea Wind Power Hub, TenneT and innogy, one of the world’s leading operators of offshore wind farms, have signed a Letter of Intent to jointly conduct a feasibility study on interconnectors within the North Sea Wind Power Hub system. The cooperation involves possible designs, economic rationale, as well as regulatory and market requirements for such a complex international infrastructure. Since both partner companies have a proven track record in offshore wind projects in the North Sea, the joint investigation can build on the collective knowledge and experience of previous studies and ventures.

Picture using an illustration of TenneT/innogy

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