- Directive 2009/73/EC of the European Parliament and of the Council of 13 July 2009 concerning common rules for the internal market in natural gas and repealing Directive 2003/55/EC
- Regulation No 1227/2011 of the European Parliament and of the Council of 25 October 2011 on wholesale energy market integrity and transparency
- Regulation No 994/2010 of the European Parliament and of the Council of 20 October 2010 concerning measures to safeguard security of gas supply and repealing Council Directive 2004/67/EC
- Regulation No 715/2009 of the European Parliament and of the Council of 13 July 2009 on conditions for access to the natural gas transmission networks and repealing Regulation (EC) No 1775/2005
- Regulation No 713/2009 of the European Parliament and of the Council of 13 July 2009 establishing an Agency for the Cooperation of Energy Regulators
- Regulation (EU) no 347/2013 of the European Parliament and of the Council of 17 April 2013 on guidelines for trans-European energy infrastructure and repealing Decision No 1364/2006/EC and amending Regulations (EC) No 713/2009, (EC) No 714/2009 and (EC) No 715/2009
- Commission Regulation (EU) No 984/2013 of 14 October 2013 establishing a Network Code on Capacity Allocation Mechanisms in Gas Transmission Systems and supplementing Regulation (EC) No 715/2009 of the European Parliament and of the Council
- Commission Regulation (EU) No 312/2014 of 26 March 2014 establishing a Network Code on Gas Balancing of Transmission Networks
- Act No. XL of 2008 on natural gas supply (HU)
- Act No. XLV of 1991 on metrology and its amendments (HU)
- Act No. V of 2013 on the Civil Code (HU)
- No. CXXVII of 2007 on Value Added Tax (HU)
- Act No. LXXXVIII of 2003. on energy tax (HU)
- Act No. XCIV of 2010 on solidarity tax imposed on certain sectors (HU)
- Act No. XXVI of 2006 on strategic storage of natural gas (HU)
- Act No. XLVIII. of 1993 on mining (HU)
- Act No. XXII of 2013 on the Hungarian Energy and Public Utility Authority (HU)
- Act No. LXXXVI of 2007 on electricity (HU)
- Goverment Decree No. 19/2009. (I.30.) on the implementation of Act No. XL of 2008 on natural gas supply
- Goverment Decree No. 265 of 2009 (XII. 1.) on the restriction of natural gas off-take, the use of the strategic natural gas reserve, and other measures required in case of a natural gas supply crisis
- Goverment Decree No. 48 of 2010. (II. 26.) on the procedure applicable when the natural gas supply of users is compromised in the event that the operation of the natural gas trader becomes unfeasible
Other Government Decrees issued as prescribed by the relating section of the Gas Act
- Decree No. 19/2010 (XII.3.) of the Ministry of National Development on the quantity and price of natural gas sources offered for purchase to universal service providers and of natural gas from domestic production, and on those eligible for and obliged by the use thereof
- KHEM Decree No. 27/2009. (VI. 25.) on the detailed rules of compensating for missing revenues at a public utility wholesale licensee pursuant to Act No. XLII of 2003 on natural gas supply
- KHEM Decree 28/2009 (VI.25.) on fixing the tariffs related to natural gas market universal service
- KHEM Decree 29/2009 (VI.25) KHEM on fixing the prices related to natural gas market universal service
- KHEM Decree 74/2009 (XII.7.) KHEM on the price regulation framework of natural gas system usage
- GKM Decree No. 86/2003. (XII. 16.) on the data supply obligation of certain natural gas sector undertakings
- GKM Decree No. 91/2007 (XI.20.) on the extent of the administrative service fees of the Hungarian Energy Office and on the rules of payment of the administrative service and supervision fees
- NFM Decree No. 13/2011 (IV.7.) on the volume, sale and recovery of strategic natural gas reserves
- Decree No. 1/2013 (VII.11.) of the Hungarian Energy and Public Utility Regulatory Authority on natural gas system usage fees, the rules of using incentives to improve the quality of service provided by the system operator through system usage fees, system usage fees applicable according to the quality of service provided, and the terms of applying system usage fees
- Grid Code of the Hungarian Natural Gas System
- Natural gas trading operational licence issued by HEO Resolution No. 238/2009, as modified by Hungarian Energy and Public Utility Regulatory Authority Resolution No. 1996/2013 – MFGK