A process for operating a plant comprising a gasifier for gasifying a carbon source to produce synthesis gas and a synthesis gas combustion system for combusting the synthesis gas to produce electricity, said synthesis gas combustion system comprising a combustion turbine, the process comprising: transforming a synthesis gas into a liquid fuel, producing a fuel gas using the liquid fuel and a first gas, the first gas having an oxygen content less than that of ambient air, and contacting the fuel gas with a second gas to form a combustion gas, the second gas comprising at least one oxidizing agent in an amount sufficient to support combustion in the combustion gas, the process further comprising: operating the gasifier to produce synthesis gas at a constant rate, when a current demand for electricity is below a base load of the combustion turbine that could be produced by supplying synthesis gas to the synthesis gas combustion system at the constant rate, supplying a first portion of the synthesis gas from the gasifier the synthesis gas combustion system sufficient to meet the current electrical demand, and performing said transforming using a second portion of the synthesis gas to produce the liquid fuel and storing the liquid fuel, and when a current demand for electricity is above the base load of the combustion turbine that could be produced by supplying synthesis gas to the synthesis gas combustion system at the constant rate, supplying all of the synthesis gas from the gasifier to the synthesis gas combustion system to meet a first portion of the current demand, and combusting the combustion gas resulting from the production of the fuel gas using the liquid fuel and the forming of the combustion gas in at least one combustion device to produce sufficient electricity to meet a second portion of the current demand. transforming a synthesis gas into a liquid fuel, producing a fuel gas using the liquid fuel and a first gas, the first gas having an oxygen content less than that of ambient air, and contacting the fuel gas with a second gas to form a combustion gas, the second gas comprising at least one oxidizing agent in an amount sufficient to support combustion in the combustion gas, the process further comprising: operating the gasifier to produce synthesis gas at a constant rate, when a current demand for electricity is below a base load of the combustion turbine that could be produced by supplying synthesis gas to the synthesis gas combustion system at the constant rate, supplying a first portion of the synthesis gas from the gasifier the synthesis gas combustion system sufficient to meet the current electrical demand, and performing said transforming using a second portion of the synthesis gas to produce the liquid fuel and storing the liquid fuel, and when a current demand for electricity is above the base load of the combustion turbine that could be produced by supplying operating the gasifier to produce synthesis gas at a constant rate, when a current demand for electricity is below a base load of the combustion turbine that could be produced by supplying synthesis gas to the synthesis gas combustion system at the constant rate, supplying a first portion of the synthesis gas from the gasifier the synthesis gas combustion system sufficient to meet the current electrical demand, and performing said transforming using a second portion of the synthesis gas to produce the liquid fuel and storing the liquid fuel, and when a current demand for electricity is above the base load of the combustion turbine that could be produced by supplying synthesis gas to the synthesis gas combustion system at the constant rate, supplying all of the synthesis gas from the gasifier to the synthesis gas combustion system to meet a first portion of the current demand, and combusting the combustion gas resulting from the production of the fuel gas using the liquid fuel and the forming of the combustion gas in at least one combustion device to produce sufficient electricity to meet a second portion of the current demand.