Having skimmed the report I am not happy with the arguments within. Is 60% efficiency for CCGTs in variable generation following mode realistic? 65% peak is po

Having skimmed the report I am not happy with the arguments within. Is 60% efficiency for CCGTs in variable generation following mode realistic? 65% peak is possible in new CCGTs, by running continuously to keep the steam generating cycle going, however observed gas plant efficiency in the UK is just shy of 48% per DUKES data. https://www.gov.uk/government/statistics/electricity-chapter-5-digest-of-united-kingdom-energy-statistics-dukes https://www.gov.uk/government/statistics/electricity-chapter... Is 71% efficiency of conversion from electricity to gas what is seen in industrial scale windgas installations? Are there many hundreds of MW windgas installations in 2024? Where is the carbon coming from to turn into methane? Is there some sort of carbon capture going on (and shouldn't this be costed in)? How much transmission build-out is required to support an additional 11.2GW of wind? How much does this cost given the low utilisation? Even if the electricity to gas plants are located within the wind farm, 11.2GW represents many square kilometers of land. It is assumed that the methane network and storage are already there. The economics of storing the gas (also whether the gas can be taken out of the system at the same price and priority it is put in) is not addressed. The study compares the price that will be paid for HPC power (including risk etc) with the cost of the components of the windgas system which is not the same as a company proposing and building the whole system (preparation, financing, risk etc).