If we charge

think about we don't eat anymore, we charge ourselves to consume energy. which one is cheaper?

a normal people need 2000kcal a day. that is western style. well for me, i think i just consume 1000kcal a day, may be 1500 to 1800 when i am hungry.

1kcal is about 4.2kJ.

so, i need 1800kcal = 7560kJ a day.

how about my electric bill? in Japan, 1kWh is about 23.375 yen.

1kWh = 3600kJ

therefore, if i eat electricity, i only need to pay about 60 yen a day.

but i am now spending about 1500yen a day for food if i eat out, or 700 yen for cooking myself ( not including the energy for electric cook, delivery of water.) . thus, it is about 11 times less!

and if all people in the world don't eat any more, but all are charged. then we only need more power plant and can save the world.

besides, if i eat electricity, my dinning time will be unchanged. for a power input at 1kW, i need 7560 second to charge up. which is about 2 hours. but of course, we can use higher power, say, 10kW, then we just need 13 minutes. suitable for busy people.

(someone please check my calculation, i do it just before i sleep, so tried.)