Siemens Energy’s €146 Billion Order Backlog Puts the Spotlight on One Date: May 12

Siemens Energy posts €146B order backlog and raises guidance, but all eyes are on May 12 half-year report as wind unit Gamesa must reach breakeven to validate full-year targets.

The numbers are staggering. Siemens Energy has amassed a record order backlog of €146 billion, with the latest quarter alone bringing in €17.75 billion in new business—well above the €15.6 billion analysts had penciled in. The company has already raised its full-year guidance, now targeting revenue growth of 14% to 16% and an operating margin of up to 12%. Net profit for the current fiscal year is expected to land at roughly €4 billion.

Yet for all the headline-grabbing figures, the market’s attention is fixed on a single day: May 12. That’s when Siemens Energy will publish its complete half-year report, and the document will serve as a stress test for the one division that continues to hang over the entire investment case.

Gamesa’s Breakeven Is Non-Negotiable

The wind power subsidiary Siemens Gamesa has been the company’s perennial headache, but the bleeding is slowing. The unit trimmed its quarterly loss to €46 million—a sharp improvement from the €374 million shortfall recorded in the same period a year earlier, even if one-off items provided some help. Management has warned that the first half of the fiscal year will still show red ink, but a strong rebound in offshore activity is expected to push the division to breakeven in the second half.

That breakeven is not merely an internal ambition. The management has explicitly made it a condition for the confirmed full-year outlook. If Gamesa misses the target, the consequences could be severe—regardless of how robust the grid business performs.

Grid Technologies: The AI-Powered Juggernaut

The Grid Technologies segment has become the company’s most dependable growth engine. Revenue from hyperscalers in the power grid space has more than doubled, surpassing €2 billion, as the AI infrastructure boom drives relentless demand for electricity. Data centers require massive, controllable power supplies, and wind and solar alone cannot guarantee round-the-clock availability. That dynamic is funneling orders into gas turbines and grid equipment at an unprecedented pace.

The segment’s order intake jumped nearly 30% in the second quarter, and the company is targeting full-year revenue growth of 25% to 27% in this division, with an operating margin between 18% and 20%. Structural projects like Germany’s SuedLink and the Nord-Süd power corridors are adding further tailwinds.

For large gas turbines, Siemens Energy is already quoting delivery dates beyond 2029—a clear sign that capacity is spoken for years in advance.

A Breather After a Blistering Rally

The stock has been on a tear. After hitting an all-time high of €188, the shares have pulled back slightly and are now trading just above €180. Since the start of the year, the gain stands at nearly 47%, and over the past twelve months, the advance has been roughly 148%.

At an expected price-to-earnings ratio of over 50, the valuation leaves little room for error. Technical analysts are watching the support zone around €175—if that level holds, the broader uptrend remains intact.

One structural shift is also reshaping the ownership picture. Siemens AG, the former parent, has reduced its voting stake from nearly 15% to 5.54%, according to a mandatory disclosure dated April 2, 2026. The sale generated €3.8 billion for the Munich-based industrial group.

The May 12 Verdict

The half-year report on May 12 will provide deeper insight into cash flow development and, most critically, Gamesa’s trajectory. If the numbers from Munich confirm that the wind unit is on track for breakeven, the premium valuation may be justified. But a disappointing signal from Gamesa could quickly put pressure on the share price—no matter how full the order book looks.