Home/Market/Grid usage and congestion management/Usage of interconnectors Usage of interconnectors Coupling of national electricity markets in Europe creates the prerequisites for the constantly growing cross-border electricity trade. Following transparent procedures, electricity traders can procure transmission capacities on the lines operated by 50Hertz. Transmission capacities between the countries lead to an active energy exchange and the electricity supply within the EU becomes more efficient and climate-neutral in general. Moreover, the cross-border lines offer additional opportunities to balance fluctuation in generation. This means an increased security of supply for all. The technically available transmission capacities on the international lines cannot be provided for trade to the full extent. As transmission system operator (TSO), 50Hertz is particularly responsible for grid security and therefore maintains reserves that enable us to compensate for fluctuations and guarantee failsafe performance. For the purpose of non-discriminating and transparent international electricity trading, the transmission capacity and safety margin of the relevant connections (interconnectors) are first calculated on the basis of defined models. 50Hertz constantly publishes the resulting currently available grid capacity. Transmission capacities are allocated on the platforms provided to that end or via power exchanges, both in the long term (for yearly and monthly periods) and in the short term (day-ahead and intraday). As a result, the physical electricity flow shown here is not always identical to the commercial, i.e. traded electricity flow. Capacity calculation Calculation of the total available transmission capacity between the relevant bidding zones as well as the safety margins to guarantee grid security is legally stipulated. In accordance with article 50(2) of Regulation (EU) 2019/943, there is a general model that has been approved by the regulatory authorities. In detail, the calculation models vary depending on the technical conditions of the interconnectors and are, for instance, much simpler for a directly controllable high-voltage direct current transmission line (HVDC) than for alternating current (AC) lines. All calculation models described below have been approved by the German national regulatory authority (Bundesnetzagentur). Additionally you can find information on outage planning and outages on this website. Interconnections between Germany (50Hertz) and Denmark (Energinet) Interconnections between Germany (50Hertz) and Poland (PSE) and the Czech Republic (ČEPS) respectively Up-to-date grid capacities The requirements for cross-border electricity transport keep increasing due to the growing European electricity trade. The available transmission capacities of the cross-border interconnectors, however, are often not enough. The available line capacities therefore need to be managed without discrimination according to a market-oriented and transparent procedure. Below you can find current data on grid capacity at the hubs of the 50Hertz grid area with transmission system operators in Poland (PSE), the Czech Republic (ČEPS) and Denmark (Energinet.dk). Disclaimer All figures published on the following page have been determined and are made available to the best of our ability. We accept no responsibility for accuracy and completeness, or for the occurrence of the described scenario. The capacity offered and awarded in the auctions may differ from the indicated figures; any legal claims shall be excluded. No liability is accepted for any damage resulting from temporary non-availability or inaccuracy of data. Should the data be temporarily unavailable for technical or other reasons, 50Hertz will make every effort to immediately restore access to the data. 50Hertz reserves the right to subsequently change data should this be required for correction purposes. Grid capacity at the border between 50Hertz and Energinet The indicated figures represent the total of capacities of the interconnection capacity for both directions of the load flow. Date Date From To 50Hertz ⇝ Energinet.dk [MW] Energinet.dk ⇝ 50Hertz [MW] Show more Download CSV files for each month Annual forecast of the grid capacity at the border between 50Hertz and Energinet.dk Monthly forecast of the grid capacity at the border between 50Hertz and Energinet.dk Weekly forecast of the grid capacity at the border between 50Hertz and Energinet.dk Daily forecast of the grid capacity at the border between 50Hertz and Energinet.dk Grid capacity at the border between 50Hertz and ČEPS/PSE The indicated figures represent the total of capacities at all hubs for both directions of the load flow. Date Date From To 50Hertz ⇝ ČEPS/PSE [MW] ČEPS/PSE ⇝ 50Hertz [MW] Show more Download CSV files for each month Annual forecast of the grid capacity at the border between 50Hertz and ČEPS/PSE Monthly forecast of the grid capacity at the border between 50Hertz and ČEPS/PSE Weekly forecast of the grid capacity at the border between 50Hertz and ČEPS/PSE Daily forecast of the grid capacity at the border between 50Hertz and ČEPS/PSE Capacity allocation The limited available transmission capacities between the grid area of 50Hertz and the grid areas of the neighbouring transmission system operators are currently allocated in the long term for yearly and monthly periods. Additionally, in the short term, transmission capacities are allocated in the day-ahead as well as in the intraday timeframe. Allocation of the capacities at the various borders in the individual timeframes is carried out via the platforms of the companies listed below which are in charge of carrying out the respective capacity allocations. You will find detailed information on the allocation of capacities listed under the links to the respective platforms. Explicit and implicit auctions In case of an explicit allocation, the transmission capacity is allocated independently of a commercial electricity transaction. In addition to the market for commercial electricity transactions, there is another separate market on which the rights for the use of capacity can be acquired. These two markets do not only exist separately from each other but also differ in terms of timing. In case of implicit allocations, the transmission capacity is allocated together with the commercial electricity transaction. This allocation process requires close coordination between transmission system operators and power exchanges. Interconnection between Germany (50Hertz) and Denmark (Energinet.dk) Interconnections between Germany (50Hertz) and Poland (PSE) and the Czech Republic (ČEPS) respectively Load flows A load flow is the physical electricity flow, i.e. the effectively measured energy volume per time unit on the lines. Under normal operating conditions, it is always available and differs from the commercial electricity flow that is traded across the borders via the interconnectors.In accordance with § 17 (1) of the German Ordinance on Power System Access (StromNZV), the overview shows the cross-border load flows at the hubs of the transmission grid of 50Hertz to the neighbouring grid areas of the countries of Denmark, Poland and the Czech Republic. LASTFLUESSE 2005 Download XLS (3.5 MB) LASTFLUESSE 2006 Download XLS (4.62 MB) LASTFLUESSE 2007 Download XLS (4.78 MB) LASTFLUESSE 2008 Download XLS (4.79 MB) LASTFLUESSE 2009 Download XLS (4.78 MB) LASTFLUESSE 2010 Download XLS (4.78 MB) LASTFLUESSE 2011 Download XLS (4.78 MB) LASTFLUESSE 2012 Download XLS (4.8 MB) LASTFLUESSE 2013 Download XLS (4.79 MB) LASTFLUESSE 2014 Download XLS (4.79 MB) LASTFLUESSE 2015 Download XLS (4.33 MB) LASTFLUESSE 2016 Download XLS (3.52 MB) LASTFLUESSE 2017 Download XLS (3.52 MB) LASTFLUESSE 2018 Download XLS (3.51 MB) LASTFLUESSE 2019 Download XLS (3.52 MB) LASTFLUESSE 2020 Download XLS (3.52 MB) LASTFLUESSE 2021 Download XLS (3.46 MB) CONTACT Gert Schwarzbach Head of Interconnectors Tel: +49 30 5150-0 Email: info@50hertz.com CONTACT IMPRINT DATA PROTECTION NEWSLETTER SITEMAP Login This site uses third-party website tracking technologies to provide and continually improve our services, and to display advertisements according to users' interests. 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