Ran across an interesting article on people reverse-engineering the Saturn V engines:
How NASA brought the monstrous F-1 “moon rocket” engine back to life | Ars Technica Interesting quotes:
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The power generated by five of these engines was best conceptualized by author David Woods in his book How Apollo Flew to the Moon—"[T]he power output of the Saturn first stage was 60 gigawatts. This happens to be very similar to the peak electricity demand of the United Kingdom."
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As with everything else about the F-1, even the gas generator boasts impressive specs. It churns out about 31,000 pounds of thrust (138 kilonewtons), more than an F-16 fighter's engine running at full afterburner, and it was used to drive a turbine that produced 55,000 shaft horsepower. (That's 55,000 horsepower just to run the F-1's fuel and oxidizer pumps...
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Or maybe it's just an extreme example of pulse & glide :-)