Who makes poles and structures for AI data centers

Transmission structures are the poles and lattice towers that hold conductors off the ground, plus the foundations and hardware that fix them there. It is a steel fabrication and galvanising business, sold by the ton, and it is the least glamorous item in the transmission chain and one of the more likely to determine when a line energises. The constraint is capacity and logistics rather than technology. Fabrication and galvanising capacity is finite and shared with everything else that needs coated structural steel; large structures are oversize loads that need permits and routing to reach a right-of-way that may have no road; and installation needs cranes and crews that the same market is competing for. When a transmission programme accelerates, this is one of the places the schedule stretches. For this catalog the link is that AI load growth is driving a transmission build-out, and every new circuit is thousands of tons of fabricated steel. It also competes with the substation and building steel catalogued elsewhere here. What to look for is fabrication and galvanising capacity rather than order intake, the split between wood, steel and concrete structures in a given market, and lead times, which have extended along with the rest of the electrical supply chain rather than independently of it.