With six units in operation, PTT is a major operator of Thailand's Gas separation business designed to separate various hydrocarbon components of natural gas, thus adding value to gas from the Gulf of Thailand GSP Units 1-3 and 5-6 are located at Tambon Map Ta Phut, Amphoe Mueang, Rayong, whereas Unit 4 is located at Amphoe Khanom, Nakhon Si Thammarat
The present nameplate capacities of all GSPs total 2,660 Million Standard Cubic Feet per Day (MMscfd), made up of:
| Nameplate capacity (million cubic feet/day) | |
|---|---|
| GSP Unit 1 | 350 |
| GSP Units 2-3 (including the additional quantity from the Ethane Plant) | 750 |
| GSP Unit 4 | 230 |
| GSP Unit 5 | 530 |
| GSP Unit 6 | 800 |
Thanks to PTT's relentless improvement in efficiency, today its GSPs boast a combined 2,870 MMscfd in processing capacity.