Method for production of electrical energy and H2 gas in a power plant comprising a Solid Oxide Fuel Cell (SOFC), said power plant being charged with a feed gas selected from the group consisting of natural gas, bio-gas and syngas, said feed gas, prior to being fed to the SOFC, is reformed in a reformer with a CaO containing CO2 absorber, thereby producing a carbon free H2 gas (115,116) as feed for the SOFC while converting CaO to CaCO3, which is regenerated to CaO in an endothermic reaction in a CaO regenerator at a temperature of at least 850 °C utilizing heat from the SOFC to heat the regenerator, characterized in that a dedicated heat exchange medium (201,202,203,204) collecting heat in the SOFC is subjected to temperature increase in a heating device (41',41'') separated from the CaO regenerator, before being subjected to heat exchange in the CaO regenerator, wherein the dedicated heat exchange medium (201,202,203,204) is circulating in a closed loop between the SOFC, the heating device (41',41'') and the CaO regenerator, wherein the heating device (41',41") is charged with one of: i. a gas having a biogenic origin, and ii. a gas of fossil origin, wherein the gas is subjected to one of a) being burned in pure oxygen to yield an exhaust gas of pure CO2 (128"), and b) being burned in air yielding an exhaust gas that is subjected to a separate step of CO2 collection, wherein operating the heating device (41',41'') so as the dedicated heat exchange medium (201,202,203,204) leaving the heating device (41',41") has a temperature of at least 850 °C, preferably at least 950 °C and most preferred at least 1000 °C. said power plant being charged with a feed gas selected from the group consisting of natural gas, bio-gas and syngas, said feed gas, prior to being fed to the SOFC, is reformed in a reformer with a CaO containing CO2 absorber, thereby producing a carbon free H2 gas (115,116) as feed for the SOFC while converting CaO to CaCO3, which is regenerated to CaO in an endothermic reaction in a CaO regenerator at a temperature of at least 850 °C utilizing heat from the SOFC to heat the regenerator, characterized in that a dedicated heat exchange medium (201,202,203,204) collecting heat in the SOFC is subjected to temperature increase in a heating device (41',41'') separated from the CaO regenerator, before being subjected to heat exchange in the CaO regenerator, wherein the dedicated heat exchange medium (201,202,203,204) is circulating in a closed loop between the SOFC, the heating device (41',41'') and the CaO regenerator, wherein the heating device (41',41") is charged with one of: i. a gas having a biogenic origin, and ii. a gas of fossil origin, wherein the gas is subjected to one of a) being burned in pure oxygen to yield an exhaust gas of pure CO2 (128"), and b) being burned in air yielding an exhaust gas that is subjected to a separate step of CO2 collection, i. a gas having a biogenic origin, and ii. a gas of fossil origin, wherein the gas is subjected to one of a) being burned in pure oxygen to yield an exhaust gas of pure CO2 (128"), and b) being burned in air yielding an exhaust gas that is subjected to a separate step of CO2 collection, wherein operating the heating device (41',41'') so as the dedicated heat exchange medium (201,202,203,204) leaving the heating device (41',41") has a temperature of at least 850 °C, preferably at least 950 °C and most preferred at least 1000 °C.