The electrical efficiency of a HoSt steam cycle is much higher than an ORC (Organic Rankine Cycle). The difference increases significantly for installations above 1 MWe. Up to 40% more electricity can be generated by a steam cycle due to:
- 30% higher cycle efficiency.
- Lower parasitic electrical consumption. The thermal oil pump of an ORC consumes up to 10% of the generated electricity.
- Higher boiler efficiency due to a lower flue gas flow in combination with a lower stack temperature.