Value chain · CLM-0792
In plain terms
Under the UK's retained version of the EU connection code, any generator connecting at 110,000 volts or more, or above 75 megawatts, faces the strictest category of requirements. Its reactive power envelope is capped, and synthetic inertia is something the system operator may ask for, not something the generator must have.
The claim as recorded
The retained Great Britain version of EU Regulation 2016/631 classifies any power-generating module with a connection point at 110 kV or above as type D, sets the Great Britain maximum capacity thresholds at 1 MW for type B, 50 MW for type C and 75 MW for type D, applies to type D power park modules the type C reactive power requirements of Article 21, whose Table 9 sets the Great Britain inner-envelope limits for a power park module U-Q/Pmax profile at a maximum Q/Pmax range of 0.66 and a maximum steady-state voltage range of 0.225 per unit with the requirement applying at the connection point, and provides at Article 21(2)(a) only that "the relevant TSO shall have the right to specify that power park modules be capable of providing synthetic inertia during very fast frequency deviations", making synthetic inertia a right the system operator may exercise rather than an obligation on the generator.
Scope and limits
This is the retained GB text obtained because EUR-Lex would not serve the original EU version to an automated client (section 7). Consequently it may NOT be cited as the EU-in-force text: the retained version carries post-EU-exit amendments and its Table 1 and Table 9 rows for other synchronous areas are omitted in the retained text. Table 9 gives an ENVELOPE range within which the system operator specifies an actual profile; it is not itself the requirement a generator must meet.
What it assumes
That the legislation.gov.uk retained text as generated 2025-11-25 is the version in force. That page states: "Changes to legislation: There are currently no known outstanding effects by UK legislation for Commission Regulation (EU) 2016/631."
Where it comes from
Type D, verbatim, Article 5(2)(d): "connection point at 110 kV or above (type D). A power-generating module is also of type D if its connection point is below 110 kV and its maximum capacity is at or above a threshold specified in accordance with paragraph 3. This threshold shall not be above the limit for type D power-generating modules contained in Table 1." Thresholds, Table 1, row "Great Britain": type B 1 MW, type C 50 MW, type D 75 MW. Inheritance, verbatim, Article 22: "Type D power park modules shall fulfil the requirements listed in Articles 13, except for Article 13(2)(b), (6) and (7), Article 14, except for Article 14(2), Article 15, except for Article 15(3), Article 16, Article 20 except for Article 20(2)(a) and Article 21." Envelope, Table 9 "Parameters for the inner envelope in Figure 8", row "Great Britain": "Maximum range of Q/Pmax" = 0.66; "Maximum range of steady-state voltage level in PU" = 0.225. Point of application, verbatim, Article 21(3)(b)(iii): "the reactive power provision capability requirement applies at the connection point. For profile shapes other than rectangular, the voltage range represents the highest and lowest values. The full reactive power range is therefore not expected to be available across the range of steady-state voltages;". Synthetic inertia, verbatim, Article 21(2): "a the relevant TSO shall have the right to specify that power park modules be capable of providing synthetic inertia during very fast frequency deviations; b the operating principle of control systems installed to provide synthetic inertia and the associated performance parameters shall be specified by the relevant TSO." Supplementary reactive power, verbatim, Article 21(3)(a): "with regard to reactive power capability, the relevant system operator may specify supplementary reactive power to be provided if the connection point of a power park module is neither located at the high-voltage terminals of the step-up transformer to the voltage level of the connection point nor at the convertor terminals, if no step-up transformer exists."
Basis: retained GB text as generated 2025-11-25, including post-EU-exit amendments; Q/Pmax and voltage ranges in per unit at the connection point
Related records
- Answers question
- QST-012 not published in this release
Cite this
energyaperture.com/c/clm-0792
CLM-0792, Energy Aperture, as of 2025-11-25.