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<p>Germany's electricity system is undergoing a fundamental transformation in the context of the energy transition. Addressing the increasing fluctuations in weather- and time-dependent renewable energy feed-in, a rapid and comprehensive flexibilization of electricity demand in the commercial and industrial sectors in the higher voltage levels is becoming increasingly important – alongside energy-flexible charging and the operation of heat pumps in the low-voltage grid. This, however, requires a regulatory framework that enables the economic viability of investments in energy flexibility. In this context, individualized network tariffs play a crucial role. A form of individualized network charges available to both commercial and industrial consumers is atypical grid usage, as defined in § 19 (2) sentence 1 of the German Electricity Network Fee Ordinance. A key prerequisite for benefiting from this special regulation is a significant reduction in grid consumption by the end user during peak load periods. However, the existing regulatory framework for atypical grid usage and the calculation methodology of peak load periods increasingly restrict the use of commercial and industrial energy flexibility – despite the fact that such behavior would offer advantages from both market and system perspectives. Against this background, this article examines the challenges associated with the current regulatory framework for atypical grid usage and subsequently proposes three specific development options to overcome them. Designating peak load periods on a monthly basis is already feasible in the short term, thereby reducing the influence of individual days on the determination of peak load periods, compared to the current approach. The short- to medium-term expansion of a residual load assessment across voltage levels, as well as the long-term introduction of real-time confirmation or cancellation of peak load periods, could gradually further increase system value. The benefits of the presented short-term reform proposal are illustrated and discussed using a case study on bivalent process steam generation in the paper industry.</p>

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Vorschläge für eine systemdienliche Weiterentwicklung der atypischen Netznutzung in der deutschen Stromnetzentgeltsystematik

  • 期刊论文

  • 发表日期：

    2025年7月31日

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  • Hans Ulrich Buhl,
  • Dominik Eble,
  • Markus Pichlmeier,
  • Tilman Bockhacker,
  • Niklas Eiser

摘要

Germany's electricity system is undergoing a fundamental transformation in the context of the energy transition. Addressing the increasing fluctuations in weather- and time-dependent renewable energy feed-in, a rapid and comprehensive flexibilization of electricity demand in the commercial and industrial sectors in the higher voltage levels is becoming increasingly important – alongside energy-flexible charging and the operation of heat pumps in the low-voltage grid. This, however, requires a regulatory framework that enables the economic viability of investments in energy flexibility. In this context, individualized network tariffs play a crucial role. A form of individualized network charges available to both commercial and industrial consumers is atypical grid usage, as defined in § 19 (2) sentence 1 of the German Electricity Network Fee Ordinance. A key prerequisite for benefiting from this special regulation is a significant reduction in grid consumption by the end user during peak load periods. However, the existing regulatory framework for atypical grid usage and the calculation methodology of peak load periods increasingly restrict the use of commercial and industrial energy flexibility – despite the fact that such behavior would offer advantages from both market and system perspectives. Against this background, this article examines the challenges associated with the current regulatory framework for atypical grid usage and subsequently proposes three specific development options to overcome them. Designating peak load periods on a monthly basis is already feasible in the short term, thereby reducing the influence of individual days on the determination of peak load periods, compared to the current approach. The short- to medium-term expansion of a residual load assessment across voltage levels, as well as the long-term introduction of real-time confirmation or cancellation of peak load periods, could gradually further increase system value. The benefits of the presented short-term reform proposal are illustrated and discussed using a case study on bivalent process steam generation in the paper industry.