The implementation of the TPA system shall be regulated by the Energy Commission. Figure 1 shows the regulatory scope under the Gas Supply Act 1993. As can be seen, the Energy Commission shall be responsible for the economic and technical regulation of the TPA system as a whole, but shall only be responsible for the  safety regulation aspect downstream of city gate stations.

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For adequate and effective regulation, the Energy Commission will, among others, carry out the following functions:

• Ensure that gas supply is secure and sustainable via the TPA system.
• Ensure that reasonable and relevant access to gas facilities are given to third parties.
• Protect the rights of third parties or consumers in respect of the continuity of gas supply, utilization of facilities, gas quality and services provided by the owner of the gas facilities.
• Develop and publish relevant Codes, Guidelines and directions to ensure smooth implementation of the TPA system
• Ensure that the safety of consumers is protected from dangers arising from the activities of distribution, retail and use of gas.
• Promote the existence of healthy competition among the relevant licensees.
• Carry out audit on licensees, institutions, manufacturers, importers and contractors, as applicable.