News for hackers. Stuff that matters.

A comment on Solar Panels on Half the World’s Roofs Would Power the Planet. Parent comment

Re:Solar Panels on Half the World’s Roofs Would Power the Pl... by algo_trader on Tuesday October 12, 2021 @03:49PM (#28844232)
This seems very thin. The planned Sunrise Australian Singapore cable, ~5000km, ~5GW, this is 1/1000th of the power, so a cable 1/30th as thick? Under 2 inches???

Anyway - can you maybe lend a quick hand for a more practical calculation?

How do we move 10MW DC, from a battery pack, to a motor 200m away? Can i just hook the batteries in parallel and get to 10Kv ?!

Obviously a liquid cooled cable.

[ Parent | on HN ]
Re:Solar Panels on Half the World’s Roofs Would Power the Pl... by opwieurposiu on Tuesday October 12, 2021 @05:54PM (#28845536)
Area increases as a square of diameter, and the square root of 1000 is 31, so 1/30th as thick seems about right.

Current state of the art battery packs run at 800V. Making a 10kV pack would be difficult. 10MW is about the size of the largest wind turbines so maybe a wind turbine engineer could help you.

[ Parent | on HN ]