This is how dominant China is in the solar energy industry:
Indeed, China is extremely dominant in solar power. Could the Middle Kingdom be preparing for a massive switch to solar energy?
There is huge potential in solar, thousands of times greater than the current global energy consumption**. The consumption figure includes every energy source: oil, coal, nuclear, hydro -- everything. And the sun pours down thousands of times more than that.
So I am fairly optimistic about China's future. And the world's energy future may depend on how well China overcomes the US's resistance to renewables.
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** A simple calculation: the sun pours onto Earth thousands of times more power than all of human civilization currently uses.
First,
, the world uses about 10,000 Mtoe of energy per year. This includes all energy sources: coal, oil, hydro, nuclear, etc. One Mtoe is a million tons of oil equivalent, or about 42 gigajoules. Thus 10,000 Mtoe/year translates to 13e12 W = 13 terawatts of power.
is 3.8e26 watts. At the Earth's orbit, the radiated power is spread more or less evenly over a sphere of radius 150 million km. This sphere's surface area is 4 * pi * (150 million km)^2 = 2.8e23 m. Thus the Earth gets roughly 1300 watts per square meter.
, the Earth's albedo is 0.30, which means Earth reflects 30% of the sun's radiation back to space. This leaves 1300 W * (1 - 0.30) = 910 watts per square meter for us Earthlings.
The Earth's radius = 6400 km, which means the planet's cross section is 2 * pi * (6400 km)^2 = 2.6e14 m^2.
Thus 910 W/m^2 * 2.6e14 m^2 = 236,000 terawatts of solar energy is available.
This is 236e3 TW / 13 TW = 18,000 times more power than all of humanity is currently using. I don't know how much of this we can actually capture, but I think it's safe to say that solar energy is thousands of times greater than we currently use.