When 800 VDC enters the installation code and SSTs can be certified: SemiAnalysis (2026-05-26) expects partial 800 VDC provisions in NEC 2029, with the code maturing in NEC 2032 or 2035. On 2026-09-24 UL Solutions announced a certification program for medium-voltage solid-state power units, built on UL 2877.
NEC 2029 (partial, forecast); UL certification pathway openforecast
| Value kind | forecast — Forecasts are time-bound outlooks, not specifications; test decisions across plausible scenarios. |
|---|---|
| Scope | The NEC dates are an analyst forecast. UL's 2026-09-24 announcement opens a program and names no certified product. Certifying a product and getting the installation accepted locally are separate steps (Chapter 4.4). DG Matrix targeted certification by the end of Q2 2026 (announced 2026-06-17); its releases through 2026-10-13 do not report it (checked 2026-10-19). |
| As of | 2026-10-19 |
| Source | SemiAnalysis, Inside the 800VDC Revolution, Part 1 (2026-05-26); UL Solutions press release (2026-09-24) · SemiAnalysis: NEC section, partial provision in NEC 2029 and maturity in NEC 2032 or 2035. UL Solutions release of 2026-09-24: certification program for medium-voltage solid-state power units based on UL 2877. |
| Review | checking…review by 2027-04-13 · standard cadence |
| Recorded changes | last 2026-10-19 · 4 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.