Siemens Energy
German energy-equipment maker spun out from Siemens AG; HV transformers and turbines.
Last refreshed: 16 May 2026
Can Siemens Energy's Charlotte plant actually fix the 2026 transformer shortage?
- Why is there a shortage of high-voltage transformers for data centres?
- Lead times for large power transformers have stretched from 24-30 months pre-2020 to around five years today. Demand from data-centre campuses, offshore wind, and grid modernisation has outpaced the manufacturing capacity of the three main global suppliers: GE Vernova, Siemens Energy, and Hitachi Energy.Source: GE Vernova Q1 2026 earnings; Power Magazine
- When will Siemens Energy's Charlotte transformer plant open?
- Siemens Energy's $150m manufacturing plant in Charlotte, North Carolina is scheduled to commission in 2027-2028. At current five-year lead times, a transformer ordered in 2026 would not arrive until 2031.Source: Power Magazine; GE Vernova Q1 2026 earnings analysis
- What is Siemens Energy's relationship to Siemens AG?
- Siemens Energy was spun off from Siemens AG's Gas and Power division on 1 April 2020, with shares trading independently on the Frankfurt Stock Exchange from 28 September 2020. It is a separately listed company (ticker: ENR) and not a division of Siemens AG.Source: Wikipedia; Siemens Energy corporate
- Does Siemens Energy own Siemens Gamesa?
- Yes. Siemens Energy holds a majority stake in Siemens Gamesa Renewable Energy, which manufactures onshore and offshore wind turbines. Siemens Gamesa experienced significant turbine-reliability problems in 2022-2024 that weighed on the group's margins.Source: Siemens Energy corporate; Wikipedia
- How big is Siemens Energy's order backlog?
- Siemens Energy reported a record order backlog of €154bn in Q2 FY2026, with a book-to-bill ratio of 1.72. Revenue in the same quarter rose 8.9% year-on-year to €10.3bn.Source: Siemens Energy Q2 FY2026 investor relations
Background
Siemens Energy is one of three companies that can supply the high-voltage transformers data-centre campuses require to connect to the grid at scale, alongside GE Vernova and Hitachi Energy. Its $150m transformer manufacturing plant in Charlotte, North Carolina is scheduled to commission in 2027-2028, but a unit ordered today will not arrive until 2031 at current five-year lead times. The Charlotte plant therefore provides no relief to the 2026 pipeline, where only one-third of the 12-16 GW of planned data-centre capacity is under construction. The rest sits on transformer order queues in which Siemens Energy holds a significant share.
Siemens Energy AG was created on 1 April 2020 when Siemens AG spun off its Gas and Power division, with shares trading on the Frankfurt Stock Exchange (ticker: ENR) from 28 September 2020. It is headquartered in Munich and employs approximately 102,000 people across more than 90 countries. Its four major business lines are gas and steam turbines, high-voltage transformers and grid technology, Siemens Gamesa wind turbines (a majority-owned subsidiary), and compressors for industrial and oil-and-gas applications. Revenue reached €39.1bn in fiscal year 2025, with the grid and power-transmission businesses driving the fastest growth as the global energy transition accelerates demand for high-capacity switching and transmission equipment.
Beyond data centres, Siemens Energy sits at the intersection of European energy sovereignty, the gas-turbine market, and the offshore wind supply chain through Siemens Gamesa. Its €154bn order backlog as of Q2 FY2026 reflects the structural mismatch between grid-infrastructure demand and the industry's manufacturing capacity: a backlog that large takes years to work through and confers multi-year pricing power on the company's grid division, even as its Gamesa wind subsidiary continues to recover from turbine-reliability problems that weighed on margins in 2022-2024.
