假設，AI 數據中心用電750MW. (300-1000MW的中間值)
以下是Copilot 算的
Natural gas needed for a 750 MW gas power plant
Below is a practical estimate based on typical heat rates for natural?gas generators. Results vary with technology, ambient temperature, and plant efficiency.
Key assumptions
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Net electric output: 750 MW (i.e., 750 MWh per hour).
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Generator type and heat rate:
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Combined?cycle gas turbine (CCGT): 6.5–7.5 MMBtu/MWh6.5\text{–}7.5\ \text{MMBtu/MWh} (about 50–60% efficiency).
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Simple?cycle gas turbine (SCGT): 9–11 MMBtu/MWh9\text{–}11\ \text{MMBtu/MWh} (about 33–40% efficiency).
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Gas energy content: 1,037 Btu/scf1{,}037\ \text{Btu/scf} (typical pipeline natural gas).
Calculations
Formulas
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Hourly fuel energy: MWh×heat rate\text{MWh} \times \text{heat rate}
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Gas volume: MMBtu÷(Btu/scf)\text{MMBtu} \div (\text{Btu/scf})
Combined?cycle case (efficient)
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Hourly fuel energy:
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Hourly gas volume:
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Daily gas volume: 113–130 million scf/day113\text{–}130\ \text{million scf/day}
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Annual gas volume: 41–47 bcf/year41\text{–}47\ \text{bcf/year}
Simple?cycle case (less efficient)
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Hourly fuel energy:
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Hourly gas volume:
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Daily gas volume: 156–191 million scf/day156\text{–}191\ \text{million scf/day}
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Annual gas volume: 57–70 bcf/year57\text{–}70\ \text{bcf/year}
What changes the number
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Technology: CCGT vs. SCGT is the largest driver.
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Ambient temperature: Hotter air increases heat rate (more gas per MWh).
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Parasitic loads: Plant auxiliaries and cooling reduce net output efficiency.
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Capacity factor: Fuel scales with actual average output; if average load is lower than 750 MW, reduce proportionally.
Quick takeaway
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For a 750 MW plant running continuously:
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CCGT: about 113–130 million scf/day.
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SCGT: about 156–191 million scf/day.
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