World energy consumption is total energy used by all countri

World energy consumption is total energy used by all countries from all sources in one year. Current estimate (2013) of world energy consumption is 5.67 times 10^20 J What is the average world power consumption in TW (T is tera is 10^12)? What is world energy consumption in TWh? If electricity accounts for 18% of total energy world consumption, how much electrical power is consumed worldwide in TWh? Approximate percent consumption of world energy by region: 22% of North America, 5% South and Central America, 23% Europe and Eurasia, 3% Africa, and 40% Asia Pacific region. What is the total energy consumed in North America? Approximate percent contribution of electricity generation worldwide: Coal 41.3, natural gas 21.7, Hydro 16.3, Nuclear 10.6, Oil 4.4, Renewable 5.7. How much electrical power in GW is generated by coal? How much electrical energy in TWh is generated by coal? How much electrical energy in TWh is generated by natural gas?

Solution

a)

average world power consumption = 567*10¹²/(60*60*365*24)=17.979 TW

b)

total energy consumption = 567*10¹²/(60*60)=157500 TWh

c)

electrical power consumed = 157500*0.18=28350 TWh

d)

energy consumed in north america = .22*157500 = 34650 TWh

e)

electrical power generated by coal = 0.413*28350*10¹²/(24*365*10⁹)=1336.59 GW

electrical energy generated by coal = 0.413*28350*10¹²/10⁶=11708.55 TWh

electrical energy generated by natural gas = 0.217*28350*10¹²/10⁶=6151.95 TWh