SGT-A65 aeroderivative gas turbine

The SGT-A65 reaches simple-cycle gross efficiency of up to 41.4% on natural gas. Its independent three-shaft design also helps maintain strong efficiency at part-load conditions, supporting economical operation across changing dispatch profiles.

Yes. The SGT-A65 can start in under 7 minutes from cold, and its aero-derivative design inherently provides outstanding capabilities for load-following and fast transient response. This helps operators bring capacity online quickly when demand rises or when renewable generation fluctuates.

Its aeroderivative heritage and independent three-shaft architecture support high cycling capability, frequent starts and stops, and responsive load changes. This makes the turbine a strong fit for markets where operational flexibility is increasingly valuable.

The SGT-A65 uses Wet Low Emissions combustion to reduce NOx emissions to no more than 25 ppmvd on natural gas fuel.

The Inlet Spray Intercooling (ISI) system improves SGT-A65 performance at ambient temperatures above 7 °C (45 °F). It helps increase output and fuel efficiency in warmer conditions while minimizing additional water consumption and auxiliary load compared with other inlet-cooling technologies.

The SGT-A65 is designed around modular maintenance. Its engine consists of eight interchangeable modules, and engine replacement can be completed in under 24 hours of working time, helping reduce downtime and support high availability.

Siemens Energy supports the SGT-A65 with Long Term Programs, overhaul and field services, spare parts, service exchange, remote diagnostics, and modernization and upgrade options. Global specialists are available to support both planned maintenance and short-term service needs.