# Commission Regulation (EU) No 774/2010 of 2 September 2010 on laying down guidelines relating to inter-transmission system operator compensation and a common regulatory approach to transmission charging (Text with EEA relevance), Division 5.2: The annual cross border infrastructure compensation sum shall be apportioned amongst transmission system operators responsible for national transmission systems in proportion to:

Extent: E+W+S+N.I.

1.. transit factor, referring to transits on that national transmission system state as a proportion of total transits on all national transmission systems;
2.. load factor, referring to the square of transits of electricity, in proportion to load plus transits on that national transmission system relative to the square of transits of electricity in proportion to load plus transit for all national transmission systems.
The transit factor shall be weighted 75 % and the load factor 25 %.

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Source: https://www.legislation.gov.uk/eur/2010/774/annex/part/A/division/5/division/5.2 (the official version)
Page: https://openlegislation.uk/eu-regulation-2010-774/annex/part-A/division-5/division-5.2
Contains public sector information licensed under the Open Government Licence v3.0. Source: legislation.gov.uk, The National Archives.