Gasification is a process that converts organic, or fossil fuel based carbonaceous materials into a synthetic gas. This is achieved by reacting the waste material at high temperatures (>700 °C), without combustion, with a controlled amount of oxygen via Exhaust Gas Recirculation (EGR). The resulting gas mixture is called syngas and is itself a fuel. The power derived from syngas is considered to be a source of renewable energy if the gasified compounds are obtained from biomass or residual non-recyclable fossil waste. The process uses EGR which is exhaust gas that has already been combusted and fed directly back into the system. The advantage with re cycling the exhaust gas directly into the gasifier is the resultant ultra-environmentally clean emissions, allowing clean gas production from otherwise problematic fuels. This clean gas is combusted at 1100°C then further cooled to 600°C and again cooled to 50°C. This exhaust gas at 50°C is ultra clean. The CTEC system has already exceeded the European emission's requirement.