The elapsed time from purchase order to equipment delivery. Wood Mackenzie reports transformer lead times rose from roughly 50 weeks in 2021 to about 120 weeks on average in 2024, with large power and GSU transformers ranging 80 to 210 weeks; its Q2 2025 survey put power transformers at a 128-week average. These industry-wide waits make pre-sourced, factory-integrated equipment a decisive schedule advantage.