Plant auxiliary power of the power plant

From the most recent bids, it was learned that plant power is a key factor in attracting owners. I wonder what proportion of the plant’s auxiliary power consumption is accounted for by small units of 50MW-300MW? (100%) What percentage of the plant’s auxiliary power consumption does it account for in units with a capacity of over 300MW? (100%) This poster asked the question above, and I’d like to share my understanding of it. The power consumption for plant operations depends on factors such as the type of power plant, the fuel and combustion method, steam parameters, and the level of mechanization. Mathematically, the ratio of the power consumed for plant operations to the power generated is known as the plant load factor, which is an important technical and economic indicator for power plants. The plant electricity consumption rate for conventional thermal power plants is 8-10%, while that for condensing power plants is 4-8%. This is because, in addition to the electricity used for power generation, thermal power plants also need electricity for heating purposes. As for the difference between large and small units mentioned by the original poster, I think it depends on the type of unit; the number and types of auxiliary machines such as condensing units, extraction turbines, and backpressure turbines also vary, which naturally leads to differences in power consumption.

It seems there are experts upstairs; may I ask what size of unit or from which other industry?