04 Apr '17 12:17

http://www.sciencealert.com/the-world-s-biggest-solar-energy-battery-is-about-to-be-built-in-australia

they claim 100 mw from 4000 square meters they claim, 43,000 odd square feet which is about one acre. Now the sun produces about 125 watts per square foot times 43K is about 5 mw. Off by a factor of 20 or so.

I wonder if they mean 4000 meters by 4000 meters? But even at 20% efficiency, that would be about 4 GIGAwatts. That doesn't work.

Going with 100 Mw generated, times 5 says that area produces 500 Mw hitting the ground, divide by 1350 (watts per meter squared) and that says 0.6 km squared, 600^2 or about 370,000 meters squared.

Do my numbers work out? 600 meters by 600 meters is my guess as to the area covered by photocells.

they claim 100 mw from 4000 square meters they claim, 43,000 odd square feet which is about one acre. Now the sun produces about 125 watts per square foot times 43K is about 5 mw. Off by a factor of 20 or so.

I wonder if they mean 4000 meters by 4000 meters? But even at 20% efficiency, that would be about 4 GIGAwatts. That doesn't work.

Going with 100 Mw generated, times 5 says that area produces 500 Mw hitting the ground, divide by 1350 (watts per meter squared) and that says 0.6 km squared, 600^2 or about 370,000 meters squared.

Do my numbers work out? 600 meters by 600 meters is my guess as to the area covered by photocells.