utility-to-VRM efficiency of the stated four-stage AC fixture versus the separately sourced SST/800 VDC architecture result
About 80–87% AC case (82% representative)derived
| Value kind | derived — Derived values are guide calculations; their result is only as fixed as the stated inputs, scope, and method. |
|---|---|
| Scope | AC range from .99×(.94–.97)×.96×(.90–.94); representative .99×.94×.96×.92. Arithmetic retains full precision; display follows assumed inputs. Routing/auxiliaries excluded; no surveyed fleet range or analyst DC measurement is implied. The 86.7% four-stage high end coincides numerically with the separately modeled ~87% SST/800 VDC result (end-to-end-electrical-chain-efficiency-800vdc); they are different chains and evidence classes, not a tie. |
| As of | 2026-09-08 |
| Source | Guide derivation, September 8, 2026; Chapter 4.1 assumed four-package AC ledger. |
| Derivation | Low=.8040384; high=.86660352; representative=.82190592; report about 80–87% and 82%. The separate modeled DC record has its own evidence boundary. |
| Review | checking…review by 2026-10-16 · standard cadence |
| Recorded changes | last 2026-09-16 · 3 revisions tracked |
| Claim id | utility-to-vrm-efficiency-legacy-ac-span |
Where the guide uses it
← Full numbers register — every date-stamped figure in the guide, with revision history.