I think typical factory production rarely gets above 50% of capacity, IIRC. Nonetheless, factories are being built at breakneck speed in the US and other places. The same IEA report that cited 1TWh/year in 2024 expects that number to be 3TWh/year in 2030. And given the IEA's tendency to underpredict, I'd expect 3TWh/year in 2027 at the very latest, if we're not already there.