[zardo]

> They speak in term of raw energy, carried by the photons the sun sends us.

Or is it saying that you would get 173,000 terrawatt-hours of electrical energy? It refers to energy then gives a number in units of power.

[thrance]

I think it means the Sun gives us 173,000 terrajoules per second, which is a power quantity.

[verzali]

Yeah it should be per second. If you run the numbers that's the solar power falling on the Earth. But to capture it you need to be above the atmosphere, only about 75% reaches the Earth's surface.