FAQ Third Party Access System What are the fees to be p… ‹ Third Party Access System What are the fees to be paid under TPA and by whom? The applicable fees are as prescribed in the Gas Supply Regulations 1997. Third Party Access System What is the TPA system? ↗ Why is the TPA system introduced? ↗ When will the TPA system be implemented? ↗ Who shall regulate or oversee the implementation of the TPA system and what are its functions? ↗ What activities fall within the ambit of the TPA system and who are the parties involved? ↗