# Czech Railways HVO biofuel testing

> Live situation record from CLSTR: https://clstr.news/situations/czech-railways-hvo-biofuel-testing
> Updated: 2026-09-06T09:09:30.000Z. Sources: 5. Developments: 2.

České dráhy, in collaboration with the Central Bohemian Region, is conducting a multi-phase testing project to reduce emissions on non-electrified rail lines. Following previous trials involving biofuel blends of 15%, 20%, and 30%, the project has entered a new stage involving the use of 100% hydrotreated vegetable oil (HVO).

The current testing phase utilizes three PESA Bydgoszcz RegioFox diesel multiple units equipped with Rolls-Royce engines at the Rakovník depot. This initiative serves as a transitional measure to lower local emissions while the railway industry works toward broader electrification and the deployment of battery-powered trains.

## Timeline

### 2026-09-06: Czech Railways tests 100% biofuel in RegioFox trains

Czech Railways and the Central Bohemian Region have begun testing 100% hydrogenated vegetable oil (HVO) in RegioFox diesel trains to reduce transport emissions.

3 sources. https://clstr.news/cluster/czech-railways-tests-100-biofuel-in-regiofox-trains

### 2026-09-03: České dráhy begins testing 100% eco-friendly HVO fuel in RegioFox trains

České dráhy is testing 100% hydrotreated vegetable oil (HVO) in its RegioFox diesel trains to reduce emissions on non-electrified rail lines in the Czech Republic.

2 sources. https://clstr.news/cluster/esk-drhy-begins-testing-100-eco-friendly-hvo-fuel-in-regiofox-trains

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Cite as: Czech Railways HVO biofuel testing. CLSTR, https://clstr.news/situations/czech-railways-hvo-biofuel-testing