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Decarbonsinig the Energy System – the Role of Tsos

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Decarbonsinig the Energy System – the Role of Tsos DECARBONISING THE ENERGY SYSTEM The role of Transmission System Operators DECARBONISING THE ENERGY SYSTEM The role of Transmission System Operators Front page image from 50Hertz/Jan Pauls Executive summary Reaching this ambitious goal requires all parts The central role that TSOs will play in this of society to actively work together. A systemic, increasingly complex, interconnected and va- integrated approach to decarbonisation, whe- riable energy system means that their contri- re demand and supply are matched at the least bution is crucial for achieving Europe’s climate cost, needs to be adopted. The production and goals. use of energy across all sectors of the EU eco- nomy account for more than 80% of the EU’s This is why a group of leading European TSOs GHG emissions1, with similar levels in strongly including Terna (IT), RTE (FR), Elia Group (BE and interconnected neighbouring countries. DEU), TenneT (NL & DEU), Amprion (DEU), Red Eléctrica (ES), Swissgrid (CH) and APG (AUT) Direct electrification coupled with have worked together to clarify and assess the contribution of TSOs to the decarbonisation of energy efficiency and the growing the energy system. share of renewable generation are the primary tools for decarboni- TSOs will provide the EU and Member States sing the energy sector. with their unique and neutral expertise in order to promote the establishment of a secure and Electricity will play a key role in the decarbonisation efficient interconnected power system that will of the economy thanks to the higher efficiency of support socioeconomic prosperity. electrical end uses and the integration of mature re- newable generation sources into the system (such They have welcomed Europe’s work and efforts as wind, solar, hydro and biomass). This has been towards decarbonisation and have embedded confirmed by all long-term energy scenarios2, whi- sustainability in their approach to the develop- ch predict that there will be a widespread adoption ment and operation of their electricity networks. of electrical assets (such as electric vehicles and TSO contributions to reducing GHG emissions heat pumps) and electrification of industrial proces- fall under two categories. ses. All future energy scenarios also confirm that the electricity network will become the backbone of Firstly, TSOs are contributing to a greener energy system. Replacing fossil fuels with the decarbonisation of Europe by electricity produced by low carbon energy sources reducing and limiting the carbon is already the fastest and most mature solution for decarbonising most sectors of the European eco- footprint of their own activities and nomy, including the light transport, residential and value chains respectively. service sectors. Electricity is expected to cover more than 50% of end use consumption in 2050, In line with international GHG emission stan- as outlined in EU long-term energy scenarios2 (in dards, TSOs monitor their direct and indirect EXECUTIVE SUMMARY comparison with 23% today3). GHG emissions and implement measures to reduce them. They do this through reducing However, in order for carbon neutrality to be rea- SF6 leaks, replacing SF6 gas with less harmful ched in some “hard-to-abate” sectors (in which te- alternatives when technologically feasible; they chnical and economic constraints prevent the use efficiently develop their infrastructure to limit European electricity transmission system operators (TSOs) contribute to the objective of mitigating global of electricity), direct electrification will need to be grid losses and partially offset the expected in- warming, which is outlined in the 2015 Paris Agreement. This was signed by the European Union (EU) complemented with the production and/or import of crease which occurs in proportion to electricity and its neighbouring countries, including Switzerland. TSOs are fully committed to enabling a secure and green molecules, such as hydrogen and green fuels. flows on the network; and they undertake ener- efficient transition towards a greener Europe - one in which renewable energy sources (RES) are widely These molecules will be mostly produced via Power- gy efficiency measures in their switching sta- available and in which energy is used as efficiently as possible. to-X technologies, thus bolstering the importance of tions and buildings, implement green procure- integrating low carbon electrical sources - especially ment procedures and adopt circular economy The EU and Switzerland are set to become climate-neutral by 2050, delivering on their commitment to renewable generation sources - into the system. approaches. achieving an inclusive, fair and green transition. This objective is at the heart of the European Green Deal, which includes the goal of cutting greenhouse gas emissions by at least 55% (when compared with 1990 levels) by 2030. The related “Fit for 55” package comprises a set of legislative adaptations covering 1. Emissions of the energy sector compared to total EU28 emissions in 2019 (Source: Eurostat – Data Explorer – June 2021). wide-ranging policy areas, including renewables, energy efficiency, energy taxation and greenhouse gas 2. Based on EU long term energy scenarios and in particular the scenario 1,5 Tech of the EU long term strategy (Source: JRC Technical Re- (GHG) emission schemes, among others. ports - Towards net-zero emissions in the EU energy system by 2050). 3. Based on 2019 Eurostat energy balance (version 2021). DECARBONISING THE ENERGY SYSTEM - The role of Transmission System Operators 1 Executive summary Secondly, TSOs are playing a le- nage an increasingly complex and digitalised ading role in enabling the ener- energy system on the path towards carbon neutrality; this system is one in which the sha- gy transition by taking on the re of intermittent RES is growing and consu- major challenge of integrating mers are gradually being empowered to take renewable generation and flexi- on active roles. TSOs are, therefore, currently playing the role of energy transition enablers, bility resources into the energy since they are facilitating the decarbonisation system and supporting the di- of the European electricity system and, con- rect and indirect electrification sequently, the decarbonisation of society as of different sectors of the eco- a whole, using complex and innovative tools to do so. nomy. The main tools used by TSOs in their role The core of TSO activities and responsibilities as enablers include the expansion and de- is to ensure the secure and high-quality de- velopment of the power transmission grids; livery of electricity across national and inter- the integration of flexible assets and servi- connected transmission grids which are the ces into the system (to facilitate demand backbone of the European electricity system side response, storage and sector coupling), they operate. TSOs are responsible for main- encouraging associated developments in taining the electrical frequency at 50Hz every market design and regulatory frameworks; second across the European interconnected and participation in debate and analytical synchronous system. They apply their inde- assessment related to the future design of pendent expertise to develop reliable and ef- electricity markets, capacity mechanisms ficient interconnected grids and related grid and congestion markets, so playing a pi- access mechanisms under the supervision of votal role in assessing challenges and pro- regulatory agencies. However, the role TSOs posing solutions for an efficient integra- play has been widening. They have to ma- tion of renewables into markets and grids. 2 DECARBONISING THE ENERGY SYSTEM - The role of Transmission System Operators Executive summary Digitalisation and investments in research and Given this crucial role, an assessment of the development are additional key approaches performance of a TSO with regards to su- used to ensure effective RES integration and stainability and decarbonisation should not the electrification of consumption. These to- stop at annual evaluations of its carbon fo- ols either directly contribute to GHG emission otprint. Instead, the impact that a TSO has reduction or indirectly contribute to enhan- on the decarbonisation of the system as a cing system reliability, ensuring a high level whole, which will ultimately also contribu- of security, the proper functioning of markets te to the reduction of its carbon footprint, and delivering value to end users as the sy- should be considered. The expansion and stem adapts to higher levels of renewables. development of TSO activities are therefore For example, interconnections can be used to be recognised as active contributions to to carry RES surplus from one country to furthering the electrification and decarboni- another which still relies on fossil fuels gene- sation of society. ration, thus directly contributing to a reduction in the overall emission factor of its generation As a concrete example, whilst the develop- mix. More broadly, the interconnection of ment of a new line connecting a TSO’s on- electricity systems means that local varia- shore grid to a wind farm will lead to an in- tions in electricity generation are averaged crease in its individual carbon footprint, there out, which is particularly useful for integrating will be a net decrease in carbon emissions increasing shares of renewable sources into across the system due to the integration of national electricity mixes. Interconnections carbon-free electricity over the lifetime of the also indirectly contribute to enhancing
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