Successful test for the Combined Grid Solution

09.11.2018

The Combined Grid Solution is a joint offshore connection project by the two TSCNET shareholders 50Hertz, one of the four German Transmission System Operators (TSOs), and the Danish TSO Energinet. The binational interconnector in the Baltic Sea will integrate the electricity systems of Denmark and Germany by linking the German wind farm Baltic 2 to the Danish wind farm Kriegers Flak. The utilisation of grid connections from offshore wind farms to couple the transmission grids of two countries is nothing less than a world premiere.

The laying of the two submarine cables “150kV-line KFE-BaZ 155“ and “150kV-line KFE-BaZ 156“ was completed at the beginning of July and the two TSOs have now successfully conducted 24-hour testing of both cables. Around noon on 6 November and in the afternoon thereafter, the two cables were energised one after the other up to the disconnector on the offshore substation OSS KFE and now are ready to transport electricity. Sebastian Wagner, Sub-Project Manager Sea cables at 50Hertz, and Energinet’s Project Manager Daniel Johan Brøndum jointly declared: “Everyone in the team worked closely together and delivered to-the-point. We are very happy and celebrate this success together.”

The submarine cables for the Danish-German offshore interconnector Combined Grid Solution of 50Hertz and Energinet were successfully tested (illustration based on pictures of 50Hertz / Sebastian Wagner)

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> See Energinet project news (html)

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Danish security of supply among the best

09.07.2018

An availability rate of electricity of 99.995% of the time in 2017 is quite impressive, and the Danish TSCNET shareholder Energinet is the transmission system operator (TSO) presenting this outstanding value in its “Security of electricity supply report 2018”. With this remarkable confirmation of last year’s result (99.996%), Denmark is again among the leading European countries. According to Energinet, the excellent security value is partly due to the high level of underground cabling in Denmark.

The key features of today’s energy landscape ‒ such as the integration of extensive and increasing wind and solar power capacities, more electricity interconnectors between different countries, or the harmonisation of markets and grid operation via EC regulations ‒ all affect the Danish supply security, which is no longer a national, but a regional issue. Energinet is aware of the new challenges and will adress these with operational and infrastructural measures, but also with the introduction of market reforms to increase the flexibility of both, generation and consumption.

TSCNET shareholder Energinet, the Danish TSO, presents impressive figures in its Security of electricity supply report 2018.

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Combined Grid Solution: submarine cable installed

06.07.2018

In early May, all of the three offshore platforms for the planned Danish wind farm Kriegers Flak in the Baltic Sea were successfully installed. One of them will not only collect wind power, but also function as linking point for the Combined Grid Solution, the first Danish-German offshore interconnector. The Combined Grid Solution is a joint venture of two TSCNET shareholders, 50Hertz, one of the four German Transmission System Operators (TSOs), and the Danish TSO Energinet.

Just two months later, 50Hertz announces that the next significant step for the project has been taken. The Combined Grid Solution will integrate the electricity systems of Denmark and Germany by linking the German wind farm Baltic 2 with 25 kilometres of submarine cables to Kriegers Flak. Now both cables of the interconnector have been laid out completely. The Baltic 2 platform was the starting point for the cable laying, and on 5 July, the Kriegers Flak platform was reached.

Elke Kwapis, project manager at 50Hertz, acknowledges the good cooperation with Energinet in this process and states: “These are great news. In the business everybody knows how complex the installation of submarine cables can become.” Especially in this case, it was even more challenging than usual, because the Baltic 2 platform was constantly in operation during the cable laying.

The submarine cables for the Danish-German offshore interconnector Combined Grid Solution of the TSOs 50Hertz and Energinet have been laid out. Picture: Screenshot taken from video “Combined Grid Solution (CGS) by 50Hertz and Energinet“ (50Hertz, YouTube)

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CGS onshore transformers on site

03.06.2018

The Bentwisch substation near the city of Rostock in Mecklenburg-West Pomerania is the future onshore converter station for the Combined Grid Solution, the first Danish-German offshore interconnector. The project is a joint venture of two TSCNET shareholders: 50Hertz, one of the four German Transmission System Operators (TSOs), and Energinet, the Danish TSO. The Combined Grid solution integrates the electricity markets of Denmark and Germany by linking the Danish Kriegers Flak wind farm with its German counterpart, Baltic 2. Now another significant step for the interconnector has been taken, as two transformers have been supplied to Bentwisch.

In combination with a double converter system, the large-scale equipment is essential for balancing the asynchronous transmission systems of Germany and Denmark. The transformers were transported from Rostock harbour to the substation per heavy-duty road transport. The second arrived in Bentwisch on the night of 29 to 30 May, and the first three weeks before. “We have thus reached another milestone on the way to commissioning the Combined Grid Solution. The transformers are the most important technical components for the back-to-back system on site,” comments Martin Henschel, specialist engineer at the 50Hertz Northern Regional Centre.

> See 50Hertz press release, in German (html)

Picture: visavis Filmproduktion GmbH

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Cooperation for the green and digital transition

25.05.2018

The European energy landscape is changing constantly and fast, and there are two main factors that radically influence the conditions for the players in the energy market: the energy transition and the digital revolution. New digital developments offer great opportunities for companies from the energy sector to closer cooperate with companies outside the sector’s traditional value chain in order to realise a smart and efficient green and digital transition. Modesty and professional ambition should balance each other in this challenging field of work, or in the words of Thomas Egebo, CEO at TSCNET shareholder Energinet, the Danish transmission system operator (TSO): “We don’t have all the answers, but we would like to be part of the solution.”

On behalf of Energinet and the European Network of Transmission System Operators for Electricity (ENTSO-E), Thomas Egebo was the host of the Digital Round Table on 24 May in the Danish Capital of Copenhagen. High-level representatives from Microsoft, GE Power, Renault, Envision ‒ China’s second-largest wind turbine company ‒ and other international companies and organisations attended the event to discuss the impact of new technologies and digitalisation on the energy sector and the possibilities for new partnerships between companies from the traditional energy sector and other companies.

Many of the prospective solutions are still unknown to us today, but it is certain that data is essential for the energy future. Energinet wants to be a catalyst in this area to help market participants create products of the future. Thomas Egebo explained that a TSO such as Energinet can supply production data and information about the state of the network to businesses and consumption data to individual consumers. “Data is something that everyone can tap into, as well as a crucial element of the new business models, in which consumers can make a real difference in contributing to the integration of renewable energy,” commented Mr Egebo.

> See Energinet press release (html)
> Visit Energinet event website (html)

Picture: Digital Round Table by Energinet

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North Sea Wind Power Hub presentation

25.05.2018

The road to a sustainable low-carbon energy future cannot be successfully pursued without ambitious and courageous lighthouse projects. With a fundamentally original concept of combining wind energy production, storage and transmission with a multinational interconnector, the North Sea Wind Power Hub vision definitely falls into that category. The hub concept comprises one or more so-called Power Link Islands which are built in shallow North Sea waters with ideal wind conditions and connected to multiple offshore wind facilities. The vision also includes power to gas technologies in the form of gas-based transmission and storage solutions. Such islands facilitate the distribution and transmission of wind power and may additionally serve to interconnect the transmission systems of the North Sea neighbouring states.

The North Sea Wind Power Hub was originally conceived by TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO). The Hub consortium by now also consists of Danish TSO Energinet, another TSCNET shareholder, the Dutch natural gas infrastructure and transmission company Gasunie and the Port of Rotterdam. The Clean Energy Ministerial ‒ part of this year’s Nordic Clean Energy Week in Copenhagen and Malmö ‒ provided a welcome opportunity to showcase the North Sea Wind Power Hub in front of a considerable number of Energy Ministers from most of the largest economies in the world, as well as Denmark, Norway, Sweden, Finland and The Netherlands.

Lars Barfoed, Chairman of the Board of Energinet, took over the presentation on behalf of the consortium. Mr Barfoed identified the shared vision of new energy highways and trade corridors between the North Sea riparians as “bold, but simple”. Instead of individual national offshore connections for the integration of ever increasing offshore wind energy, an internationally coordinated hub concept would be much more efficient, also in economic terms. Of course, the vison requires sustainable political support and cooperation at the international level. “We need to focus more on the whole picture,” explains Mr Barfoed. “If a wind power hub in the North Sea is to move from vision to reality, whatever its technical and economic potential, it requires massive political support from a large number of participating countries.”

> See Energinet press release (html)
> See TenneT press release (html)
> Visit North Sea Wind Power Hub website (html)

Picture: Screenshot taken from video “North Sea Wind Power Hub vision” (North Sea Wind Power Hub Consortium, YouTube)

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Platforms for Combined Grid Solution installed

08.05.2018

The installation of all three offshore platforms for the planned Danish wind farm Kriegers Flak in the Baltic Sea has successfully been completed on 7 May. A special heavy duty crane vessel was needed as the platforms weigh 800, 1,500 and 1,800 tonnes, respectively. The platforms will not only collect the electricity from Kriegers Flak, but one of them will also be used for the Combined Grid Solution, the first Danish-German offshore interconnetor, which is a joint venture of the two TSCNET shareholders 50Hertz, one of the four German Transmission System Operators (TSOs), and Energinet, the Danish TSO.

The Combined Grid Solution will link Kriegers Flak to the German wind farm Baltic 2 and thus integrate the electricity systems of Denmark and Germany. According to Jens Christian Hygebjerg, project manager at Energinet, the platform installation was the “most costly risk” of the whole project. “It is therefore a great relief to see all three platforms in their rightful place.” The platforms are scheduled to be put into operation in October 2018, but only after an intensive phase of further assembly work and a series of tests under real-life conditions.

> See 50Hertz press release (html)
> See Energinet press release (html)

Picture: Jakob Fynsk / Energinet

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Change in corporate structure at Energinet

06.05.2018

In response to an increasingly complex energy market environment, TSCNET shareholder Energinet has reorganised the company and established several subsidiaries. Since 1 May 2018, the Danish national transmission system operator (TSO) for electricity and natural gas consists of group staff, two business services companies and the following subsidiaries: Electricity System Operator, Electricity Transmission, TSO Gas, Gas Storage Denmark, Danish Gas Distribution, and DataHub.

Energinet has taken on several new tasks in recent years, which have led to diverging operational and financial challenges. The new corporate organisation ensures that Denmarks energy infrastructure will continue to be operated as securely and efficiently as possible. Energinet’s CEO Thomas Egebo comments on the company’s reorganisation: “Due to Energinet’s growth, our business has become more complex. With the new corporate structure, we create greater transparency in decision making, and we make a clear separation of roles and responsibilities.”

> See Energinet press release (html)

Picture: Energinet / Hvidt & Mølgaard Arkitekter, by wizual.dk

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Transformer for Combined Grid Solution

06.04.2018

At the Hollandia shipyard in Krimpen aan den IJssel in the Dutch province of South Holland, the next step has been taken for the Combined Grid Solution, the first Danish-German offshore connection in the Baltic Sea: A 450MVA transformer was placed on the Kriegers Flak Extension offshore platform. The interconnector is a joint venture by the two TSCNET shareholders 50Hertz, one of the four German Transmission System Operators (TSOs), and Energinet, the Danish TSO.

By linking two offshore wind farms, the German Baltic 2 and the planned Danish Kriegers Flak, the Combined Grid Solution will integrate the electricity systems of both respective countries. The transformer is necessary to balance the different voltage levels of the Danish and German offshore wind farms. After the complete assembly of the transformer, the entire platform topside will be shipped to Kriegers Flak at the end of April. Here, it will be installed on the gravity foundation, which has been erected in February of this year on the floor of the Danish Baltic Sea.

> See 50Hertz press release (html)

Picture: Dieter Böhm / 50Hertz

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Thomas Egebo appointed CEO of Energinet

20.03.2018

At the helm of TSCNET shareholder Energinet, a change of personnel is pending, as long-time President and CEO Peder Østermark Andreasen has decided to retire after 13 years of successfully managing the Danish transmission system operator (TSO). As successor to Mr. Andreasen, the Supervisory Board of Energinet now has designated Thomas Egebo, who will take over his duties as early as 1 May 2018. Thomas Egebo comes from top level politics to Energinet, holding the position of Permanent Secretary in the Danish Ministry of Energy, Utilities and Climate.

Given Energinet’s important role in the Danish and European energy sector, Lars Barfoed, Chairman of the Supervisory Board, emphasises the high degree of responsibility that the company’s CEO has to shoulder, especially in times of a rapidly changing energy system. In this regard, Mr Barfoed praises the very strong professional profile and extensive experience of Thomas Egebo, who himself outlines Energinet’s mission as managing and expanding “socially critical energy infrastructure”, ensuring “high security of supply and well-functioning electricity and gas markets”, and supporting an “efficient transition to clean energy”.

> See Energinet press release (html)

Picture: Maria Tuxen Hedegaard / Energinet

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