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Glossary · Energy industry & energy transition

Bundesnetzagentur (Federal Network Agency)

Bundesnetzagentur BNetzA regulation grid fee grid expansion electricity market Incentive regulation

The Bundesnetzagentur für Elektrizität, Gas, Telekommunikation, Post und Eisenbahnen (Federal Network Agency for Electricity, Gas, Telecommunications, Post and Railways), or Bundesnetzagentur or BNetzA for short, is an independent federal higher authority headquartered in Bonn. It falls within the remit of the Federal Ministry for Economic Affairs and Energy. Besides energy, it also regulates telecommunications, postal services and railways. In the electricity system it is the central regulatory authority: it supervises network operators, regulates the economic conditions of network operation, enforces rules on network access and grid connection, and has tasks in grid expansion, market monitoring and security of supply. However, it does not generate electricity, does not operate networks and is not a ministry.

The main reason for this role lies in the nature of electricity networks. Transmission and distribution networks are regarded as natural monopolies. It would make no economic sense to build several parallel line networks in the same street or along the same extra-high-voltage route merely to create competition between lines. Competition is therefore possible in generation, retail, direct marketing or flexibility offerings, but hardly in network operation itself. This gives rise to the task of regulation: it is to ensure non-discriminatory access to the network and to make sure that network operators have enough money for operation and investment. At the same time, it is to prevent network operators from using their monopoly to earn excessive revenues.

Regulation of networks and network charges

A central field of work is the regulation of network charges. These are the charges for the use, operation, maintenance and expansion of electricity networks. They are one component of the electricity price, but not identical to it. The end-customer price also includes, among other things, costs for energy procurement and retail as well as taxes, levies and surcharges. The Bundesnetzagentur does not set the overall electricity price. Its influence relates mainly to the regulated network portion.

In Germany, network charges are governed through incentive regulation. Network operators do not simply have their costs reimbursed. Instead, revenue caps for each year are set before a regulatory period begins. The starting point is the audited costs of a base year. These feed into an efficiency benchmarking against structurally similar network operators. In addition there is a regulated return on the equity employed. Because costs and revenues are decoupled within the period, the following applies: whoever reduces its costs below the revenues granted makes additional profit. Whoever fails to do so earns less. The savings achieved feed into the cost audit of the next period and thus benefit network users with a delay. The Bundesnetzagentur calls this principle simulated competition. The 4th regulatory period for electricity began in 2024 and, like the previous periods, lasts five years. From the 5th period onwards, the authority intends to shorten the duration to three years.

This results in a conflict of objectives. Overly strict revenue caps can slow down investment. Overly generous rules burden consumers through higher network charges. The decisions thus concern real distributional questions: Which costs are recognised? How quickly do investments flow into the charges? Which risks do network operators bear, and which do network users bear? The authority's decisions are subject to judicial review.

Reorganisation following the 2021 ECJ ruling

The authority's role has changed significantly in recent years. By judgment of 2 September 2021 (C-718/18), the European Court of Justice held that Germany had infringed EU directives. The reason was that the methods of network charge regulation were laid down in detail by ordinances such as the Incentive Regulation Ordinance (ARegV) and the Electricity Network Charges Ordinance (StromNEV). Following the judgment, these methods must lie exclusively with the independent national regulatory authority. With the 2023 amendment of the Energy Industry Act (EnWG), the Federal Government's ordinance-making power was therefore replaced by a determination competence of the Bundesnetzagentur. ARegV and StromNEV expire at the end of 31 December 2028. Until then, the authority has a power to deviate from them. The new rules are being developed by a specially created Grand Ruling Chamber for Energy (Große Beschlusskammer Energie) in several determination proceedings, such as NEST for the regulatory framework and AgNes for the general electricity network charge system. They are intended to form the basis for the 5th regulatory period for electricity from 2029. The earlier statement that the authority merely implements tight specifications from the legislator and the ordinance-maker therefore now applies only to a limited extent. It now has considerably greater discretion of its own, but remains bound by EU law, the Energy Industry Act and judicial review.

Competence: federation and states

Network regulation does not lie entirely with the Bundesnetzagentur. Under Section 54 EnWG, it is responsible, among other things, for all transmission system operators, for network operators whose network extends beyond one federal state, and for companies with at least 100,000 connected customers. In addition there are nationwide uniform topics such as metering and supplier switching. Smaller distribution system operators with fewer than 100,000 customers whose network lies within a single federal state, by contrast, are regulated by state regulatory authorities. These approve network charges there, among other things. Some states have these tasks carried out by the Bundesnetzagentur by way of so-called Organleihe (administrative assistance in which one authority's organ acts for another). According to the authority, these are currently Berlin, Brandenburg, Bremen and Schleswig-Holstein.

Distinction from network operators, ministries and competition authorities

Transmission system operators such as 50Hertz, Amprion, TenneT and TransnetBW operate the extra-high-voltage grid. They are responsible for system operation and grid stability and balance generation and consumption in their control areas. Distribution system operators operate regional and local networks. The Bundesnetzagentur operates none of these networks. It sets the conditions under which the network operators act and monitors compliance.

Fundamental political decisions, for example on the expansion of renewables, the coal phase-out or the design of energy law, are made by the legislator and the Federal Government. The Bundesnetzagentur implements the statutory framework in proceedings, determinations and supervisory measures and can make technical and economic consequences visible. The Bundeskartellamt (Federal Cartel Office), by contrast, protects competition across all sectors against cartels and against the abuse of dominant market positions. The Bundesnetzagentur regulates certain infrastructure sectors on a permanent basis because competition there is structurally limited. In wholesale markets and in questions of abuse, the two areas of responsibility overlap. For wholesale trading in electricity and gas, a Market Transparency Unit (Markttransparenzstelle) has been established at the Bundesnetzagentur.

Grid expansion as a procedure, not as building responsibility

The Bundesnetzagentur does not build lines and does not own networks. Its role in grid expansion lies in planning, review and approval procedures. Since 2011 it has reviewed the electricity network development plan prepared by the transmission system operators and confirms it after public consultation. In doing so, it does not automatically confirm all the proposed measures. It confirmed the Network Development Plan 2023–2037/2045 on 1 March 2024 and submitted it to the Federal Government as the basis for the Federal Requirements Plan (Bundesbedarfsplan). The need is subsequently laid down in a binding manner by the legislator in the Federal Requirements Plan Act (Bundesbedarfsplangesetz).

For extra-high-voltage projects that cross state or national borders and fall under the Grid Expansion Acceleration Act (NABEG), the Bundesnetzagentur carries out federal sectoral planning (Bundesfachplanung). In doing so, it determines route corridors and examines spatial and environmental compatibility, alternatives and objections. It takes over the plan approval procedure only for projects assigned to it by statutory ordinance. For other lines, the states remain responsible. Delays in grid expansion can therefore rarely be attributed to a single institution. They arise from the interplay of needs assessment, permitting law, acceptance issues, supply chains, financing and the project management of the project developers.

From a regulatory perspective, not every additional line is automatically sensible. A project must fit expected load flows, feed-in, security of supply and costs. At the same time, missing grid capacity causes follow-on costs, for example through redispatch, that is, the short-term adjustment of power plant dispatch and renewable feed-in to relieve overloaded lines. The Bundesnetzagentur works at the interface between grid investment and the costs of congestion management.

Market rules, data and security of supply

The authority also issues determinations on market communication, balancing, metering, grid connection and supplier switching. Such rules are mostly invisible to outsiders, but shape the everyday operation of the electricity system. When a household switches supplier, a solar installation is registered or a storage unit is connected to the grid, the processes depend on standardised data formats, deadlines and clear responsibilities. The Bundesnetzagentur also publishes data and monitoring reports. Anyone talking about residual load, flexibility or the supply situation needs reliable information on load profiles, power plant capacity, grid situations and cross-border trade.

Security of supply is not the task of a single authority. Power plant and network operators, balance responsible parties, European institutions, ministries and regulatory authorities each bear their own responsibility. The Bundesnetzagentur monitors and coordinates certain procedures, for example on the grid reserve and on the monitoring of security of supply. However, it does not alone guarantee that sufficient firm capacity and grid capacity are available at all times.

Why the institutional role matters

In the electricity system, technical infrastructure, market rules and state supervision cannot be cleanly separated. A heat pump, a battery storage unit or an electrolyser responds not only to exchange prices, but also to network charges, connection conditions, metering concepts and settlement rules. If flexible consumers are to act in a grid-supportive way, tariffs and control options must fit. If distribution networks are to grow faster, investments must be recognised in regulatory terms. In both cases, the Bundesnetzagentur shapes the procedures in which such questions are decided.

Regulation is therefore more than bureaucracy: in the network sector, it replaces, at certain points, a competition that cannot arise there. Errors in regulation do not remain abstract. They can distort investment, make network use more expensive or hinder new flexibility. Anyone who understands the Bundesnetzagentur understands an essential part of the question of why electricity supply cannot be described by power plants and lines alone. Equally important are the rules under which these assets are operated, paid for and coordinated.

Sources

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Edited by eCMS on 11.11.2026 16:33

© 2026 Erik Schmidt. All rights reserved. Quotations with a link to the source are welcome.