4 ms·
According to Wikipedia the worldwide consumption of electricity is about 21k Tera watt hours. That's 21,000,000 gw so it's .001% right? Also I think cost is now
by joshhart 9y ago
According to Wikipedia the worldwide consumption of electricity is about 21k Tera watt hours. That's 21,000,000 gw so it's .001% right? Also I think cost is now about a quarter per watt
- deleted 9y ago[deleted]
- bumblebeard 9y agoWatts measure power, Watt hours measure energy. A 200 GW power plant could output a maximum of ~1,700 TWh in a year which is about 8% of 21,000 TWh.
- philipkglass 9y agoA terawatt hour is a unit of energy. A terawatt, or a gigawatt, is a unit of power. To estimate how many TWh can be generated annually from 200 GW of solar capacity, we need two more numbers: - The number of hours in a year. - The percentage of nameplate capacity that the system can be expected to produce on average, e.g. the capacity factor. There are 8760 hours in a year. A solar PV system in a sunny region may have an annualized capacity factor of 25%. (Installations in really sunny regions may achieve upward of 30%, and Saudi Arabia certainly has a lot of sun, but dust offsets some of the benefits of sunny deserts.) 200 * 8760 * 0.25 = 438000 gigawatt hours of electricity generated per year, e.g. 438 TWh, or about 2% of present annual global electricity generation of 21,000 TWh.