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SBL-Automotive has presented 10 alternative and renewable fuel concepts for the LEVC TX black taxi, expanding its bi-fuel evolution system developed with Prins Alternative Fuel Systems and HP Taxi. The system allows the use of Liquefied Petroleum Gas (LPG), biopropane, Compressed Natural Gas (CNG), and biomethane as alternatives to petrol for the range extender engine.

LPG is a lower carbon emission blend of propane and butane, while biopropane serves as a renewable, net zero carbon replacement. CNG, primarily methane, and biomethane are also alternative fuels with renewable options.

The system is currently available for LEVC TXs licensed by Birmingham City Council and is being discussed with other UK licensing authorities. The initiative includes expanding refuelling infrastructure for these fuels. SBL-Automotive argues that internal combustion engines can utilize various renewable fuels, which can be locally produced, reducing reliance on long-distance transportation and geopolitical risks associated with battery production.