RE: Garbage9 Feb 2026 16:01
Alpha-dog, I asked AI a few questions on why Doosan was being selected as well as Bloom for SK Ecosystems, and major reason seems to be performance
"Why Ceres Technology is Performing "Better" in Recent Testing The primary reason you are seeing superior performance metrics from Ceres/Doosan in current research boils down to the Lower Operating Temperature and the Metal-Supported Cell (MSC) design:
Thermal Cycling and Durability: Because Ceres cells use a stainless steel base, they can expand and contract much more easily than Bloom’s thick ceramic cells. This allows for faster start/stop cycles. In a data centre environment, being able to ramp up or down quickly is a massive advantage over the "always-on" rigidity of older SOFC designs. Sealing and Maintenance: At (600 deg C) (Ceres), sealing the fuel cell is significantly easier and more reliable than at (800 deg C) (Bloom). This leads to lower degradation rates over thousands of hours, which is likely the "better performance" you’ve noted in recent data.
System Efficiency: While both claim electrical efficiency in the 55–60% range (LHV), Ceres-based systems often achieve higher Total System Efficiency when integrated with waste heat recovery because the lower temperature allows for the use of more conventional (and cheaper) balance-of-plant materials.
Why SK ecoplant is using both SK isn't necessarily "switching" because of a failure in Bloom’s tech, but rather because they are playing two different market roles: Bloom (The "Utility Scale" Workhorse): Bloom has the "Energy Server" architecture already mass-produced at a scale Ceres hasn't reached yet. For massive 100MW+ power plants, SK still relies on the Bloom partnership because the supply chain is mature.Ceres/Doosan (The "High-Spec" Challenger): By partnering with Doosan (who uses Ceres tech), SK ecoplant can offer solutions for AI Data Centres where thermal management and rapid response are critical. The metal-supported design is also seen as the future of SOEC (Electrolysis) for green hydrogen because it handles the intermittent nature of renewable energy (on/off) much better than ceramics.