By rolfk on Jul 13, 2007
Can you operate a datacenter without producing CO2? STRATO - the biggest webhoster in Germany - claim they can. They plan to buy their 30 Gigawatthours of electricity they need each year from a hybrid plant.
Sun is showing neat Blackbox pictures like the one on the right.
A Blackbox is a datacenter in a box - capable of running and cooling hundreds of servers drawing 200 Kilowatts of power. Let's see - a wind turbine producing 200 Kilowatts of electricit is no rocket science these days. Repower already builds monster turbines with a propeller diameter of 126m and 5000 Kilowatts rated power. But wait a minute: We cannot calculate with rated power, because the wind is not blowing with full speed 8760 hours/year. So what is a typical yield factor of a wind turbine?
End of 2006, wind turbines with 20,6 Gigawatts of rated power were installed in Germany, producing 30.600 GWh of electricity in 2006. That's a yield factor of 17%. Not bad.
So when adding a really big battery to the picture above, a wind turbine with 200 KW / 17% / (battery effciency 80%) = 1500 Kilowatts of rated power would be sufficient to feed a Blackbox. That's the smallest turbine Repower offers these days.
This is exactly why the Blackbox is not only clever engineering to cram as many servers as possible in a small footprint, but also an ecologically responsible concept. Do not bring (CO2 emission tainted) electricity to your datacenter, build your datacenter where CO2-free power is available!