An integrated system, comprising: a CO 2 absorption system including an absorption column having an inlet for a first gas stream having at least CO gas and CO 2 gas, wherein the CO 2 absorption column of the CO 2 absorption system is configured to capture CO 2 gas from the first gas stream with a chemical absorbent to produce a second gas stream having higher concentration of CO gas and a lower concentration of CO 2 gas as compared to first gas stream; a Fischer-Tropsch reactor connected to a source of hydrogen (H 2) gas and to the CO 2 absorption system to receive the second gas stream, wherein the Fischer-Tropsch reactor is configured to operate to catalytically produce hydrocarbons from a Fischer-Tropsch reaction with the H 2 gas and the CO gas from the second gas stream, wherein the Fischer-Tropsch reaction produces heat; a heat exchanger connected to the Fischer-Tropsch reactor to capture heat produced during the Fischer-Tropsch reaction; an electrical energy production system including a furnace configured to heat boiler feed water to produce high pressure steam for a steam turbine and an electrical generator mechanically coupled to the steam turbine via a shaft configured to allow for mechanical energy from the steam turbine to be converted into electrical energy, wherein the furnace is either connected to the heat exchanger of the Fischer-Tropsch reactor such that heat exchange fluid from the heat exchanger can enter the furnace as a part of the boiler feed water or wherein the electrical energy production system comprises a further heat exchanger configured to transfer the heat from the heat exchange fluid from the heat exchanger of the Fischer-Tropsch reactor to first pre-heat the boiler feed water; and a CO 2 desorption system including a reboiler and a desorption column, the reboiler in the CO 2 desorption system being connected to a side extraction outlet of the steam turbine in the electrical energy production system such that the reboiler is configured to use waste heat remaining after generating electricity via the electrical energy production system to heat the reboiler in the desorption system to thermally regenerate chemical absorbent in the desorption column by liberating captured CO 2 gas wherein the steam turbine has an exhaust steam outlet configured to provide exhaust steam to a condenser which is configured to condense and return condensate to an inlet of the furnace and wherein the steam turbine has a side extraction outlet that is configured to provide steam at a temperature and pressure suitable for use in the reboiler of the desorption column to heat the CO 2 -enriched chemical absorbent to release the absorbed CO 2 gas, thereby regenerating the chemical absorbent on its way through the desorption column. a CO 2 absorption system including an absorption column having an inlet for a first gas stream having at least CO gas and CO 2 gas, wherein the CO 2 absorption column of the CO 2 absorption system is configured to capture CO 2 gas from the first gas stream with a chemical absorbent to produce a second gas stream having higher concentration of CO gas and a lower concentration of CO 2 gas as compared to first gas stream; a Fischer-Tropsch reactor connected to a source of hydrogen (H 2) gas and to the CO 2 absorption system to receive the second gas stream, wherein the Fischer-Tropsch reactor is configured to operate to catalytically produce hydrocarbons from a Fischer-Tropsch reaction with the H 2 gas and the CO gas from the second gas stream, wherein the Fischer-Tropsch reaction produces heat; a heat exchanger connected to the Fischer-Tropsch reactor to capture heat produced during the Fischer-Tropsch reaction; an electrical energy production system including a furnace configured to heat boiler feed water to produce high pressure steam for a steam turbine and an electrical generator mechanically coupled to the steam turbine via a shaft configured to allow for mechanical energy from the steam turbine to be converted into electrical energy, wherein the furnace is either connected to the heat exchanger of the Fischer-Tropsch reactor such that heat exchange fluid from the heat exchanger can enter the furnace as a part of the boiler feed water or wherein the electrical energy production system comprises a further heat exchanger configured to transfer the heat from the heat exchange fluid from the heat exchanger of the Fischer-Tropsch reactor to first pre-heat the boiler feed water; and a CO 2 desorption system including a reboiler and a desorption column, the reboiler in the CO 2 desorption system being connected to a side extraction outlet of the steam turbine in the electrical energy production system such that the reboiler is configured to use waste heat remaining after generating electricity via the electrical energy production system to heat the reboiler in the desorption system to thermally regenerate chemical absorbent in the desorption column by liberating captured CO 2 gas wherein the steam turbine has an exhaust steam outlet configured to provide exhaust steam to a condenser which is configured to condense and return condensate to an inlet of the furnace and wherein the steam turbine has a side extraction outlet that is configured to provide steam at a temperature and pressure suitable for use in the reboiler of the desorption column to heat the CO 2 -enriched chemical absorbent to release the absorbed CO 2 gas, thereby regenerating the chemical absorbent on its way through the desorption column.