Tool for evaluating investments in storage facilities

19.06.2019

Wind and solar, the primary and volatile power sources of the energy transition, require more grid flexibility, which can be provided, for instance, by storage facilities. Energy storage technologies open opportunities for use in future energy markets and for a range of other system and grid-related purposes. For this reason, TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO), is involved in many research initiatives on flexibility, e.g. to explore power-to-gas applications, electric vehicles and end-user participation in the energy system of the future.

TenneT has now introduced a new interactive assessment tool for storage investments, on which Tim Meyerjürgens, COO of TenneT, comments: “We want to support the electricity storage market. Storage facilities are an important source of flexibility for us to stabilise the grid. In the end, this can help to reduce the need for future grid extension.” Especially when it comes to questions concerning levies, charges or taxes as well as revenue opportunities, the TSO aims to assist market players and to create transparency.

This is why the tool, developed by TenneT in cooperation with Navigant Consulting, was specially designed for the economic evaluation of investments in grid-connected storage facilities. It compares technologies or types of financing and estimates maximum revenues based on an optimised use of storage units in different markets. The user can define individual key parameters or customise predefined projects to obtain a detailed breakdown of the results in terms of net present value and cash flow.

TenneT presents an interactive tool to evaluate investments in grid-connected storage facilities

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> See TenneT press release, in German (html)
> Visit site for free tool download with detailed instruction manual, in German (html)

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AI for decentralised grid stabilisation

06.06.2019

In a sustainable energy future, small decentralised plants such as combined heat and power (CHP) plants, heat pumps or biogas units must assume the role of stabilising the transmission system, a task which is nowadays mainly performed by large, centralised power plants. To investigate the technical feasibility of decentralised stabilisation options, TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO), the distribution system operator (DSO) Bayernwerk and Consolinno Energy GmbH have now jointly carried out a successful test in the southern part of the TenneT control area, the German federal state of Bavaria.

Since there is a vital public interest in such future-oriented technological solutions, the test was funded by the German Federal Ministry for Economic Affairs and Energy in the framework of the research project “C/Sells” which is part of the innovation programme “Smart Energy Showcases. Digital Agenda for the Energy Transition” (“Schaufenster intelligente Energie. Digitale Agenda für die Energiewende” – SINTEG). During the test, at the request of TenneT, the feed-in of a CHP plant controlled by Consolinno and connected to the low and medium-voltage grid of Bayernwerk was increased in order to provide the grid with the electricity required for stabilisation in the event of a bottleneck.

What is new is that each plant autonomously determines its flexibility potential through artificial intelligence (AI). The respective potential of the individual plants can then be further aggregated by means of swarm intelligence. The plants are in normal marketing and operation mode and report free flexibility quantities to the grid operators. “In Bavaria alone there are several thousand CHP plants, heat pumps and biogas facilities, nationwide there are many thousands more. They can increase the flexibility of the energy system and thus contribute to a safe and decentralised energy system in Bavaria and Germany. David can thus become Goliath,” comments Tim Meyerjürgens, COO at TenneT. Also in several other cooperative pilot projects, the TSO is exploring the potential of decentralised flexibility.

TenneT has carried out a successful test on the deployment of small decentralised plants for grid stabilisation

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> See TenneT press release, in German (html)

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ČEPS and SEPS to participate in IPDE

05.06.2019

The International Phasor Data Exchange (IPDE) platform is a multinational project to facilitate and optimise the exchange of operational data within the European interconnected transmission system. More specifically, these data derive from time-synchronous voltage, current phasor and frequency measurements which are collected and used in Wide Area Monitoring Systems (WAMS). IPDE is now making significant progress as the two TSCNET shareholder ČEPS and SEPS, the Czech and Slovak transmission system operators (TSO) respectively, have signed an agreement on participating in the platform.

Martin Durčák, Chair of the Board of Directors of ČEPS, comments that the “participation in the platform is another of our continual steps in the introduction of technological innovations and shift towards a digitally managed and controlled grid”. Miroslav Obert, CEO of SEPS, complements: “The project we are undertaking in collaboration with our Czech partners ensures method simplification and uniformity of phasor data exchanges between individual TSOs.”

ČEPS and SEPS have signed an agreement to participate in the IPDE Data Exchange platform

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> See ČEPS press release (html)
> See SEPS press release, in Slovak (html)

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First capacity offers on WindNODE platform

17.03.2019

Today’s energy market, with its ever-increasing share of volatile quantities of electricity from renewable sources, demands optimum capacity utilisation and systematic use of flexibility – already now and even more so in the future. To be well prepared for the challenges ahead, more than 70 partners from all over eastern Germany are working on the WindNODE project, including TSCNET shareholder 50Hertz, the German transmission system operator (TSO) responsible for the region. A core component of WindNODE is the flexibility platform, through which regional producers, consumers, and storage operators offer TSOs and distribution system operators (DSOs) flexible use of their facilities. This is intended to reduce the throttling of wind turbines in the event of grid bottlenecks.

The WindNODE flexibility platform has been in trial operation since November 2018. On 14 March 2019, capacities were offered and called up for the first time. “This means that the trial operation is now entering the practical phase and we can demonstrate that the integration of numerous producers, storage facilities and consumers in one market environment leads to less throttling of renewables – especially now in a very windy season,” explains Georg Meyer-Braune, project manager WindNODE at 50Hertz. The test phase of the platform will last until summer 2019 and processes will be gradually established at further partners, who will thus become potential suppliers. The platform will then be in continuous operation until the end of the project term in 2020. The aim is to use the dedicated facilities for congestion management also after the completion of the WindNODE project.

The first capacities have been offered and called up on the WindNODE flexibility platform (illustration using a screenshot taken from video “Die WindNODE-Flexibilitätsplattform erklärt”, 50Hertz – YouTube)

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

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TSOs release data under open license

03.02.2019

The European power transmission system operators (TSOs), represented by the European Network of Transmission System Operators for Electricity (ENTSOE), have agreed on a new data policy for the reuse of TSO owned data. This new policy implies that the TSOs release their data on ENTSO-E’s Transparency Platform under an open data licence.

This allows TSO data to be easily reused for new services, research and applications, such as the “Wind Europe Map” and “Tomorrow’s Electricity Map” – just two examples of how the open TSO data can be used to better inform citizens about energy transition and to develop new services and transparency in general. The TSOs and ENTSO-E thus demonstrate their commitment to providing sound and reusable facts and figures to energy market players and the public.

The European TSOs have agreed to release their data on ENTSO-Es Transparency Platform under an open license

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> Open example file
> See ENTSO-E press release (html)
> Visit ENTSO-E’s Transparency Platform (html)

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TSO-DSO platform for congestion management

30.01.2019

Grid operators in the Netherlands and throughout Europe are working intensively on expanding grid capacity, which is urgently needed in the wake of energy transition and economic growth. However, this cannot be achieved in the short term, but the use of flexible electricity from the market can help to avoid anticipated grid congestions. GOPACS (“Grid Operators Platform for Congestion Solutions”) is the name of a new technological tool developed in the Netherlands for this purpose. It is the result of a unique, active collaboration between four Dutch distribution system operators (DSOs) and TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO).

GOPACS is not a market platform in its own right but uses orders on existing market platforms. And this is how it works: If congestion is foreseeable at some part of the grid, operators would like to see, for example, a reduction in production or an increase in consumption. Via GOPACS, an invitation to tender is sent to market participants concerned, who place an appropriate purchase order on a connected market platform. To avoid negative impacts on the balance of the national grid, the reduction of generation in the congestion area is combined with a contrary order from a market party outside this area. The price difference between the two orders is covered by the operators, the two orders are matched, and congestion is resolved.

The Dutch grid operators are currently looking for market players who want to participate and use their flexibility productively. Participation in GOPACS is interesting for any market party with the possibility to influence electricity consumption or generation and to provide this flexibility for trading.

Together with Dutch DSOs, TenneT has launched GOPACS, a smart platform for market players to solve grid congestions

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> See TenneT press release (html)
> Visit COPACS website (html)

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TenneT performs blockchain pilots successfully

29.01.2019

The energy transition demands digital transition – the number of renewable sources is increasing, while in the future there will be less and less conventional plants available to ensure the required flexibility and stability in the grid for which the transmission system operators (TSOs) are responsible. As such, the Dutch-German TSCNET shareholder TenneT is constantly seeking new decentralised sources that can replace lost flexibility. In addition to wind and solar energy, these can include batteries, industrial plants or cogeneration. This is where digitisation comes in, because only through so-called “aggregator” and block chain technology the capacity and potential of all these sources can be combined and fully utilised.

TenneT has launched two pilot projects last year, one in the Netherlands and one in Germany, both employing blockchain technology. In the first case, e-vehicles and in the second case household batteries were used to balance the grid and avoid congestions. The blockchain application is an IBM development and the Dutch green electricity supplier Vandebron is the cooperation partner in the Netherlands. Vandebron provides battery capacity from e-car charging sessions at TenneT’s request. In this way, the TSO can draw on an additional electricity pool. In Germany, TenneT collaborates with Sonnen E-services, a company specialising in home energy storage systems. Decentralised household batteries from Sonnen are integrated into the TenneT network via a blockchain and interconnected. Through the smart use of these batteries, Sonnen contributes to facilitating power transmission in Germany.

Since both blockchain tests were successful, TenneT and IBM have signed a contract for the further development of blockchain technology. The companies will intensify the implementation so that many more parties can gain access to the electricity market. Three new partners have already been won as additional “aggregators” to ensure improved matching of electricity supply and demand. TenneT CEO Manon van Beek explains that the TSO offers not only “a new way of integrating decentralised sources”, but also “private individuals a good opportunity to participate actively in the energy transition, making the energy transition more affordable together”.

TenneT has successfully conducted two blockchain research pilot projects (picture: Sonnen GmbH)

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> See TenneT press release (html)

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EU supports research on power system interfaces

17.01.2019

After implementing the network codes and the “Clean Energy for All Europeans” package, the European Commission is now funding INTERRFACE under the Horizon 2020 programme. The aim of this research project is to create new connections/interfaces in the power system. INTERRFACE has now been launched and will run for three years with a budget of €21m. It involves 42 partners from grid and market operators, aggregators, service and technology providers as well as universities.

The consortium includes the European Network of Transmission System Operators for Electricity (ENTSOE) and the two TSCNET shareholders ELES, the Slovenian transmission system operator (TSO), and Transelectrica, the TSO from Romania. Together with their partners, they plan to develop an Interoperable pan-European Grid Services Architecture to serve as an interface between customers and power system operators – TSOs and distribution system operators (DSOs) – to allow seamless, transparent and non-discriminatory exchange of energy services.

INTERRFACE is intended to demonstrate the added value of data exchange between all players involved in the value chain of the electricity system, and this from local, regional to EU level. This would be a first in the energy sector. INTERRFACE should also enable TSOs, DSOs and customers to fully exploit and coordinate the potential of decentralised energy resources.

The European Commission is funding a research project on creating a Interoperable pan-European Grid Services Architecture

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> See ENTSO-E press release (html)

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Successful tests for the HeatFlex project

15.01.2019

Volatile and decentralised energy generation is an essential characteristic of the energy future. What is at first an evident risk to grid stability, could also prove to be an opportunity for smart and flexible grid management, since small and decentralised consumption devices, if actively involved, could even help to stabilise the grid. In order to explore this potential, TSCNET shareholder TenneT, the Dutch-German transmission system operator (TSO), and the southern German distribution system operator (DSO) Bayernwerk Netz GmbH have launched HeatFlex last summer, a research project to increase the flexibility and stability of the entire transmission system.

TenneT and Bayernwerk jointly investigate how decentralised devices can be involved most effectively. The power users that HeatFlex is concerned with are, for example, electric storage heaters, heat pumps, water heaters and potentially also electric vehicles in the Bayernwerk area. They can be controlled by the DSO using ripple control. If a bottleneck in the transmission grid is to be expected, for instance due to a lot of wind power, decentralised consumption devices are used for grid control: At TenneT’s request, they will be triggered by Bayernwerk and then cease consuming too much electricity but instead supply the grid with the necessary electricity for stabilisation.

There are over 170,000 decentralised controllable devices with a total capacity of around 200MW in the Bayernwerk distribution area. A first test in summer already proved the technical feasibility of HeatFlex in cases of real bottleneck situations. It turned out that the communication between the control centres of both operators worked quickly and efficiently. “With this project, we are testing solutions for tomorrow already today. HeatFlex is one of the pilot projects with which we are investigating which decentralised flexibilities we can use in the future to stabilise the grid. These include, for example, projects with power-to-gas, with bidirectionally chargeable electric vehicles or with home storage and blockchain technology,” explains TenneT Managing Director Wilfried Breuer.

HeatFlex, the joint research project of TenneT and Bayernwerk on flexible grid control, is making progress (picture: Bayernwerk AG)

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> See TenneT press release, in German (html)

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WindNODE flexibility platform in trial operation

21.11.2018

The energy transition results in a rapidly growing share of volatile electricity volumes from renewable energy generation. The participants in the energy market are thus faced with new and challenging tasks that go beyond the mere safe operation of electricity grids. Optimum capacity utilisation and maximum use of renewable, weather-dependent energy instead of the throttling of sustainable plants are key requirements of today’s market. The TSCNET shareholder 50Hertz, one of the four German transmission system operators (TSOs), meets the new challenges through the systematic use of flexibility.

A single example from 2017 shows the extent of today’s throttling measures: 641GWh of renewable power generation were throttled in the 50Hertz control area for grid stability reasons. In order to use otherwise lost energy, more than 70 partners from all over East Germany are working on the WindNODE project promoted by the German Federal Ministry for Economic Affairs and Energy. A central component of the project is the flexibility platform, a digital procurement system that is designed to reduce the throttling of wind turbines in the event of grid bottlenecks. Via the platform, regional generators, consumers and storage operators offer TSOs and distribution system operators (DSOs) flexible use of their facilities. TSOs and DSOs cooperate closely in the project.

The flexibility platform has now gone into test operation after almost two years of developing. The intention is to balance the load distribution of volatile generation quantities and to integrate them optimally into the system. By connecting or disconnecting flexible loads – for example industrial production facilities – the power consumption at appropriate grid nodes is regulated in such a way that bottlenecks and thus the throttling of wind energy are prevented and maximum use of green electricity is facilitated.

Dr. Dirk Biermann, Chief Markets & System Operations Officer at 50Hertz, emphasises the importance of both, more efficient use of the existing grid and grid extension, to achieve the German government’s renewable share targets. “We need to get into Power-to-X applications and the systematic use of flexibility. This is why the WindNODE platform comes at the right time and can help to effectively use regeneratively generated ‘excess electricity’ instead of throttling it.”

The WindNODE flexibility platform for effective use of renewable energy and congestion management in east Germany has been put into trial operation

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

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