In a report commissioned by Siemens, new analysis by Aurora Energy Research estimates the value of higher efficiency for gas reciprocating engines.
Key insights from this new analysis include:
- Flexible generation is key for integrating the large volumes of intermittent renewables needed for decarbonisation. Gas reciprocating engine capacity will grow by nearly 1GW per year between 2018 and 2021
- Short start-up times and the ability to run long-durations mean gas reciprocating engines are well placed to capture market opportunities for flexible generation
- Siemens engines have a 44.4% LHV efficiency, 2.2% more efficient than a standard gas reciprocating engine in the GB market. The engines comply with the Medium Combustion Plant Directive (MCPD), with nitrogen oxides (NOx) emissions of 250 mg/Nm3
- The higher efficiency of the Siemens engines allows them to be more competitive in the electricity market. The Siemens engines are expected to run in excess of 2,000 hours per year in the 2020s, around 13% more hours than a standard engine
- Relative to a standard engine, the Siemens engines are expected to earn an additional £8.6/kW/year (or 14%) of gross margin from electricity sales throughout the asset lifetime
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