Thermal energy from natural gas (indirect)

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Thermal energy from natural gas (direct)

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Thermal energy from natural gas

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Thermal energy from lignite

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Thermal energy from light fuel oil (LFO)

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Thermal energy from heavy fuel oil (HFO)

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Thermal energy from hard coal (indirect)

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Thermal energy from hard coal (direct)

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Thermal energy from hard coal

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Thermal energy from biomass (solid) (indirect)

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