Open-cycle (simple-cycle) gas turbines have no HRSG; they are typically peaking units.
1,164 plants in this category, totalling about 458 GW across 87 countries.
| Country | Plants |
|---|---|
| 1. United States of America | 485 |
| 2. Saudi Arabia | 36 |
| 3. Australia | 35 |
| 4. Iran | 34 |
| 5. Iraq | 33 |
| 6. Nigeria | 32 |
| 7. Canada | 30 |
| 8. Algeria | 26 |
| 9. China | 24 |
| 10. United Kingdom | 23 |
| 11. Argentina | 22 |
| 12. France | 22 |
| 13. Indonesia | 21 |
| 14. Germany | 20 |
| 15. Venezuela | 19 |