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A power generation system and method includes a first gas turbine system comprising a first combustion chamber configured to combust a first fuel stream of primarily hydrogen that is substantially free of carbon-based fuels. The first gas turbine system also includes a first compressor configured to

A power generation system and method includes a first gas turbine system comprising a first combustion chamber configured to combust a first fuel stream of primarily hydrogen that is substantially free of carbon-based fuels. The first gas turbine system also includes a first compressor configured to supply a first portion of compressed oxidant to the first combustion chamber and a first turbine configured to receive a first discharge from the first combustion chamber and generate a first exhaust and electrical energy. The power generation system further includes a second gas turbine system comprising a second combustion chamber configured to combust a second fuel stream to generate a second discharge. The first compressor of the first gas turbine system is configured to supply a second portion of compressed oxidant to the second combustion chamber. The second turbine system also includes a second turbine configured to receive the second discharge from the second combustion chamber to generate a second exhaust and electrical energy and a second compressor configured to receive the second discharge comprising carbon dioxide. The second compressor is also configured to discharge a recycle stream to the second combustion chamber and a split stream to a separator system adapted to recover carbon dioxide.

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The invention claimed is: 1. A power generation system comprising: a first gas turbine system comprising: a first combustion chamber configured to combust a first fuel stream of primarily hydrogen that is substantially free of carbon-based fuels; a first compressor configured to supply a first port

The invention claimed is: 1. A power generation system comprising: a first gas turbine system comprising: a first combustion chamber configured to combust a first fuel stream of primarily hydrogen that is substantially free of carbon-based fuels; a first compressor configured to supply a first portion of compressed oxidant to the first combustion chamber; and a first turbine configured to receive a first discharge from the first combustion chamber and generate a first exhaust and electrical energy; and a second gas turbine system comprising: a second combustion chamber configured to combust a second fuel stream to generate a second discharge, wherein the first compressor of the first gas turbine system is configured to supply a second portion of compressed oxidant to the second combustion chamber; and a second turbine configured to receive the second discharge from the second combustion chamber to generate a second exhaust and electrical energy; and a second compressor configured to receive the second discharge comprising carbon dioxide and to discharge a recycle stream to the second combustion chamber and a split stream to a separator system adapted to recover carbon dioxide. 2. The system of claim 1, wherein the separator system comprises a heat exchanger configured to recover heat from the split stream and a carbon dioxide separator congifured to generate a carbon dioxide rich stream and a carbon dioxide lean stream. 3. The system of claim 2, wherein the the heat exchanger comprises a cross-exchanger configured to exrecover heat from the split stream in exchange with the carbon dioxide lean stream from the carbon dioxide separator. 4. The system of claim 2, wherein the carbon dioxide separator comprises a membrane unit. 5. The system of claim 1, further comprising a first heat recovery steam generator configured to recover heat from the first exhaust and generate a first portion of steam and a second heat recovery steam generator configured to recover heat from the second exhaust and generate a second portion of steam. 6. The system of claim 1, further comprising a hydrogen generation system. 7. The system of claim 6, wherein the hydrogen generation system comprises a reforming zone configured to reform fossil-based fuels to generate a reformate comprising hydrogen. 8. The system of claim 7, wherein the hydrogen generation system further comprises a heat exchanger and a hydrogen separator. 9. The system of claim 8, wherein the hydrogen separator employs pressure swing adsorption. 10. A power generation system comprising: a first turbine system configured to combust a hyrdogen-rich stream substantially free of carbon-based fuels and to discharge an exhaust substantially free of carbon dioxide; and a second turbine system configured to combust carbon-based fuels and to discharge a compressed stream rich in carbon dioxide to a carbon dioxide separator adapted to recover the carbon dioxide; wherein a compressor in the first turbine system is configured to supply air to the first turbine system and the second turbine system; wherein the second turbine system is configured to recycle its exhaust stream internally within the second turbine system to concentrate carbon dioxide for feed to the carbon dioxide separator separator; and wherein the power generation system does not discharge substantial amounts of carbon dioxide to the atmosphere. 11. The system of claim 10, wherein the carbon-based fuels comprise natural gas. 12. The system of claim 10, further comprising a hydrogen generation system configured to a reform carbon-based fuels, wherein the hydrogen generation system is adapted to discharge a hydrogen-rich stream to the first turbine system and an off gas comprising carbon dioxide to a compressor in the second turbine system. 13. A method comprising: combusting hydrogen and a first portion of compressed oxidant in a first turbine system; discharge a first exhaust from the first turbine system that is substantially free of carbon dioxide; introducing a second portion of compressed air from the first turbine system to a second turbine system; combusting carbon-based compounds in the second turbine system and generating a second exhaust comprising carbon dioxide; internally recycling within the second turbine system the second exhaust of the second turbine system to concentrate carbon dioxide within the second turbine system; and recovering the carbon dioxide from the second exhaust in a carbon dioxide separator. 14. The method of claim 13, further comprising generating the hydrogen for the combustion in the first turbine system. 15. The method of claim 14 wherein generating the hydrogen comprises reforming a carbon-based fuel. 16. The method of claim 15, comprising substantially isolating the hydrogen and generating an off gas. 17. The method of claim 16, comprising combusting the off gas in a burner to supply heat for the reforming process, wherein combusting of the off gas generates reformer exhaust stream comprising carbon dioxide. 18. The method of claim 17, comprising separating the carbon dioxide from the reformer exhaust stream in the carbon dioxide separator. 19. The method of claim 13, comprising measuring the concentration of carbon dioxide in the recycled second exhaust within the second turbine system.