S.L. 545.12 чл. 21Unbundling of accounts.

(1) Natural gas undertakings shall keep their accounts in accordance with sub-regulations (2) to (5).

(2) Natural gas undertakings, whatever their system of ownership or legal form, shall draw up, submit to audit and publish their annual accounts in accordance with the rules of Companies

Act concerning the preparation of the annual accounts of limited liability companies. Undertakings which are not legally obliged to publish their annual accounts shall keep a copy of these at the disposal of the public in their head office.

(3) Natural gas undertakings shall, in their internal accounting, keep separate accounts for each of their transmission, distribution, LNG and storage activities as they would be required to do if the activities in question were carried out by separate undertakings, with a view to avoiding discrimination, cross-subsidisation and distortion of competition. Natural gas undertakings shall also keep accounts, which may be consolidated, for other gas activities not relating to transmission, distribution, LNG and storage. Revenue from ownership of the transmission or distribution network shall be specified in the accounts. Where appropriate, natural gas undertakings shall keep consolidated accounts for other, non-gas activities. The internal accounts shall include a balance sheet and a profit and loss account for each activity.

(4) The audit, referred to in sub-regulation (2), shall, in particular, verify that the obligation to avoid discrimination and cross-subsidies referred to in sub-regulation (3) is respected.

(5) Undertakings shall specify in their internal accounting the rules for the allocation of assets and liabilities, expenditure and income as well as for depreciation, without prejudice to nationally applicable accounting rules, which they follow in drawing up the separate accounts referred to in sub-regulation (3). Those internal rules may be amended only in exceptional cases. Such amendments shall be mentioned and duly substantiated.

(6) The annual accounts shall indicate in notes any transaction of a certain size conducted with related undertakings.