800 VDC / SST code and listing timeline: no vendor had completed UL certification for data-center SST deployment as of May 2026; full 800 VDC code support targets the 2029 NEC cycle
NEC 2029 (code); UL listing pendingforecast
| Value kind | forecast — Forecasts are time-bound outlooks, not specifications; test decisions across plausible scenarios. |
|---|---|
| Scope | Roadmap statement reported by SemiAnalysis (one vendor targeted UL certification by end of Q2 2026); procurement still requires the offered assembly’s actual listing and the AHJ’s installation acceptance (Chapter 4.4). |
| As of | 2026-05-26 |
| Source | SemiAnalysis, Inside the 800VDC Revolution, Part 1 (2026-05-26) · “no vendor has completed UL certification for datacenter SST deployment as of May 2026”; “Full 800VDC code support targets NEC 2029” |
| Review | checking…review by 2026-10-21 · standard cadence |
| Recorded changes | last 2026-09-16 · 2 revisions tracked |
| Claim id | solid-state-transformer-efficiency-at-400-kw-13 |
Where the guide uses it
- 4.4 Transformers, Harmonics & the AI Non-Linear-Load Problem
- 4.7 The DC Power Revolution: 48V → ±400V → 800V & Disaggregated Sidecar Power
- 16.2 Subsystem Roadmaps 2026 → 2030 (Consolidated)
← Full numbers register — every date-stamped figure in the guide, with revision history.