What the development involves
A solid-state transformer (SST) uses power electronics instead of a conventional transformer. Eaton has acquired Resilient Power Systems to develop the technology (Eaton, August 6, 2025), and ABB and Delta are working on similar solutions.
The technology is closely linked to the transition to 800 V DC within the facility (NVIDIA, May 20, 2025).
What benefits are documented
Delta reports up to 98% AC-to-DC efficiency for its in-row 800 V system (Delta, October 2026). This is a vendor claim, and operational data from large facilities is limited.
What it could mean in Sweden
In the short term, relevance is limited because the technology is new to a critical system. In the longer term, it could affect how much space switchgear and electrical rooms require.
What needs to be investigated
How much space can be saved. What requirements the technology places on protection and operation. How switchgear can be planned so that a later transition is possible without locking in the project today.
