Gasification is the most efficient clean coal technology. CO2 emission is reduced with the utilisation of gasification technology. Synthetic gas (syngas) is produced as the gasification product, which mainly consists of hydrogen, H2, and carbon monoxide, CO. It is expected to substitute natural gas sources in the future due to the depleting sources of natural gas in Malaysia. Abundant sources of petroleum coke and biomass were used as renewable energy fuel (alternative) source instead of depending on coal solely. Gasification of triple fuel blends (coal, petroleum coke and biomass) was conducted using pilot-scale fluidised-bed gasification plant using air as the fluidising agent. The selected blending ratios were 80:10:10, 80:5:15 and 80:15:5 (coal/biomass/petroleum coke). Adaro coal and empty fruit bunch for biomass are used in gasification tests. Petroleum coke is from Petronas refinery waste. The determination of the producer gas compositions was done using gas chromatography. Gasification tests were conducted at bed temperature of 800–900 °C. Preliminary results showed that the main compositions of producer gas were H2 (3–12 mol.%), CO (1 mol.%) and methane, CH4 (0.1 mol.%). Low heating values, LHVpg, of the producer gas were about 0.3–1.3 MJ/Nm3. Syngas from triple fuel blends with high H2 content has shown good potential to substitute the depleting natural gas reserves. However, further gasification tests will be conducted to obtain the optimum operating conditions to get the best LHVpg for the utilisation of triple fuel in the gasification system.