Rolling stock › In serviceData updated
Class 99 (Stadler)
Class 99 (Stadler): a electro-diesel (bi-mode) locomotive (Co-Co (UIC Co'Co')), built by Stadler Rail Valencia (for Beacon Rail), 2025 onward (30 ordered; first two arrived 10 June 2025). A freight locomotive: not drawn yet (set FRT).
Drawing to come
- Type
- electro-diesel (bi-mode) locomotive
- Builder
- Stadler Rail Valencia (for Beacon Rail)
- Built
- 2025 onward (30 ordered; first two arrived 10 June 2025)
- In service
- since 2025
- Top speed
- 75 mph (121 km/h)
- Power
- 6,170 kW (8,270 hp); 25 kV AC (6,170 kW at wheel rim) plus Cummins QSK50 Stage V diesel (1,790 kW); AC/AC; HVO fuel; tractive effort 500 kN · how it works
- Profile
- main-line
- Status
- 99001 first commercial train 28 July 2026; at least 99001-99013 delivered by Sept 2026 (99013 appears in a RAIL report). 99001-020 no train supply, 99021-030 with ETS (for Belmond). 13 more may be ordered for Caledonian Sleeper (not confirmed).
unverified Some of these figures haven’t yet been checked against an official source or a published history. What’s in doubt ↓
Sources
How we source figures → · Spotted a mistake? Tell us → (opens in a new tab)
- Class 99 bi-mode locomotive, vehicle data sheet LC99_Beacon0924 Stadler Rail, 2024-09power, engine, 500/430 kN, 120 km/h (75 mph), fuel
- British Rail Class 99 Wikipedia (secondary; must be paired), 2026-10-25113 t
- GB Railfreight - Locomotives page GB Railfreight, undated (read 2026-10-25)113 t, 75 mph (121 km/h), 30 ordered
- The UK's first hybrid freight locomotive enters commercial service Rail Forum UK (GBRf release), 2026-08-03first commercial service
- More Class 99s expected to be ordered for Caledonian Sleeper work RAIL magazine, 2026-10-16variants and numbers
unverified
- Length, height, width, bogie centres, bogie wheelbase, wheel diameter: NOT in the Stadler data sheet or anywhere read.
- Weight 113 t from Wikipedia and GBRf's page (two sources).
- Delivered count (13) is derived from the highest number seen in a RAIL report; Wikipedia said 7 delivered at May 2026.
- Not drawn: no drawing yet; the dimensions are in freight_data and their sources in dimension_sources (set FRT, October 2026)
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