On 11 August 2026, the National Energy and Utilities Regulatory Commission of Ukraine (NEURC) adopted a package of amendments to the Transmission System Code, Distribution System Code, Commercial Metering Code and the Methodology for Calculating Grid Connection Charges. The amendments entered into force on 1 September 2026 and implement the provisions of Law No. 4777-IX regarding flexible grid connections, shared use of network infrastructure and the integration of energy storage systems ("BESS") into the Ukrainian power system.

• Flexible Connections
  
  The amendments establish a regulatory framework for flexible connections, allowing applicants requesting more than 1 MW of connection capacity to receive a combination of fixed and non-fixed capacity where network constraints prevent the allocation of the full requested capacity on a fixed basis.
  
  Unlike fixed capacity, non-fixed capacity may be automatically curtailed depending on network operating conditions and congestion levels. Flexible connections may be granted on either a permanent or temporary basis pending completion of the network reinforcement measures required to provide the full requested capacity on a fixed basis. 
  To make use of this mechanism, an applicant may apply to the transmission system operator ("TSO") for amendments to its technical specifications based on the approved project documentation. The updated technical specifications must define the amount of non-fixed capacity, the period during which the flexible connection arrangement applies, and the technical requirements for the installation of the relevant control and protection systems. Where a temporary flexible connection is granted, the TSO must also identify the network reinforcement measures required to provide the full requested capacity on a fxied basis and specify the timeline for their implementation.
  
  
• Cable Pooling
  
  The amendments further clarify the conditions under which generation facilities and BESS assets may share a single grid connection point.
  
  In particular, they establish requirements for compliance with approved import and export capacities where a BESS is installed within the internal network of a generator or where generation facilities are connected within the network of a BESS operator.
  
  The new rules enable developers to combine electricity generation and storage projects within the existing connection capacity, without the need to obtain additional connection capacity or a separate grid connection point.
  
  
• Expansion of the Sub-User Connection Model
  
  The Transmission System Code expands the connection model that previously allowed one generator to connect its facilities through the technological networks of another generator.
  
  The mechanism now also applies to BESS operators and non-household consumers, which may act as either primary users or sub-users of a shared transmission or distribution capacity connection point.
  
  As a result, BESS operators and non-household consumers may connect their electrical installations through the networks of market participants that already have a direct connection to the transmission system. Such arrangements are implemented on the basis of a tripartite agreement between the primary user, the sub-user and the TSO.
  
  
• Commercial Metering Requirements
  
  The amendments introduce transitional requirements for the registration of additional or separate commercial metering points for generation and energy storage facilities in the Datahub platform.
  
  Licensed electricity producers, BESS operators and active non-household consumers operating generation facilities and/or BESS assets must submit the required information to commercial metering service providers within three months of the amendments entering into force.
  
  Based on the information received, commercial metering service providers must establish the relevant metering points in the Datahub platform within the following four months.
  
  
• Grid Connection Charges for BESS
  
  NEURC has also revised the methodology for calculating grid connection charges for BESS.
  
  For non-standard connections to distribution systems, separate charges will apply to import and export capacities using the relevant tariff rates. For permanent flexible connections, a reduced coefficient of 0.3 will apply to the charge component relating to non-fixedcapacity. Temporary flexible connections, however, will remain subject to the general charging rules. 
  The amendments also clarify the methodology for calculating charges for connections to the transmission system. In particular, the separate charge component of EUR 10/kW will be based on whichever is higher: the requested import capacity or the requested export capacity.
  
  

The adopted amendments establish a regulatory framework for the broader use of flexible connection and cable pooling mechanisms, while also facilitating the integration of BESS into the power system. The new rules are expected to promote more efficient use of existing grid infrastructure and support the development of new electricity generation and energy storage projects.