Sun light energy/M^2

See

http://en.wikipedia.org/wiki/Solar_power

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You to can do this.

Google is great but so are you, if you know something. Mandela said, "let you light shine bright so that others will see it and shine too." Just be nice about pointing to google.

You really need to work on those questions. Where on earth?

And at what altitude?

And, are you just trying to be naughty asking such questions?

As a rule of thumb roughly 1,000 Watts per square meter. Obviously that will vary depending of the angle of the sun but when its overhead it works out at about this.

The power reaching the earth's surface from solar radiation is about 1kW per square meter. Of course this is for surfaces on which the suns rays are falling squarely on a clear day. The atennuation of sunlight depends on the atmospheric transparency and it also depends on its deviation from the straight overhead direction because of the extra thickness of atmosphere through which it has to penetrate.