HD Hyundai's first engine-plant expansion since 2008 bets the AI shortage is watts, not chips

The demand case is the least contested part of this: Goldman Sachs has global data center power demand in 2030 running 170% above 2025 ^[3]. What turns that into a supply story is the mismatch sitting inside HD Hyundai's own capacity figures. It can divert about 0.7 gigawatts a year to land-based power generation, while land-based demand that has nothing to do with data centers has already come close to 1 gigawatt ^[6][7]. Demand at the door is roughly 43% larger than the line serving it, before a single AI order is counted ^[2].

That is what makes the Coban Energy Group contract worth reading twice. The company says the 1,000 megawatts can be supplied out of existing production capacity ^[9]. At 9.6 megawatts a unit, that is about 104 engines ^[3], and set against 0.7 gigawatts a year of divertible line time it amounts to something like a year and a half of that capacity with nothing else on it ^[4]. "Existing capacity" here is a statement about tooling, not about the calendar.

The sequence the company has set itself is tight. Meritz Securities does not expect data center engine revenue to be recognised before 2028 ^[11], and HD Hyundai says it needs a concrete production plan drawn up inside this year ^[10]. Core casting and forging are already in-house; the long-lead item is large machine tools coming from overseas, and the investment is described as being in its final stages rather than announced with a number ^[2].

The prize is margin rather than volume. Land-based power plants are 5% of sales at a 23% profit margin, which on revenue alone puts about 1.15% of group sales into profit from that slice ^[12][6]. A small share earning a high return is exactly the case for adding a line to serve it, and Meritz's further argument is that the engines dampen the cycle: as expanded volume comes on, the profit mix swings less with vessel orders ^[11]. The floating data center plan, powerships carrying the same HiMSEN engines offshore, is the same margin trade with a hull under it ^[13].