For decades, the answer was simple: GE Power (now part of GE Vernova). However, a fascinating, high-pressure ecosystem has emerged, populated by three distinct categories of suppliers:
When global supply chains snapped post-COVID, GE’s plant in Greenville, SC faced a casting defect crisis for 7FA turbine stage-1 buckets. Lead times jumped to 52 weeks. Independents like TurbineAero (now part of MDS ) swooped in, not by copying GE’s single-crystal process, but by offering a blade that lasted 24,000 hours instead of 32,000—but was available in 8 weeks. For a peaking plant running only 1,500 hours/year, this was a rational, economic win.
The next revolution is already here. Suppliers like Siemens Energy (ironically) and GE itself are moving toward on-demand 3D printing of spares. But independent suppliers are fighting back using —creating a virtual model of a used GE part, analyzing its fatigue life, and then printing a new part from a superior Inconel alloy that GE never used.