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Young climate activist tells Greenpeace to drop ‘old-fashioned’ anti-nuclear stance
(www.theguardian.com)
this post was submitted on 30 Aug 2023
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How much concrete does it take to build a nuclear plant? Concrete production is currently 8% of global emissions, so if you have to scale up construction capacity 10x for the next decade, don't you end up destroying the environment with concrete before they are even operational?
Great point. You need concrete for wind, solar, and li-ion battery storage too (including pumped hydro), but out of those I'd say pumped hydro is the only one that remotely compares in the amount of concrete needed for construction.
So purely looking at the emissions from materials needed to build these power sources, renewables have the edge due to less concrete. These emissions might show up elsewhere in raw material extraction like with silicon for solar, and then the rare earth metals needed for generators in wind, all the lithium/nickel/cobalt needed for batteries, etc., but I want to say that the Life Cycle Assessments (LCAs) from places like the National Renewable Energy Laboratory (NREL) in the US or the International Energy Agency (IEA) worldwide have taken that into account and still show that renewables + storage are cheaper on a carbon basis compared to fossil fuels and nuclear.
The cool thing about concrete for renewables (excluding hydro dam) is only the very base pad needs to be virgin. You can make a lot of the rest of the base and fill material with down cycled concrete. So tearing down part of an old factory on land near the solar panels are? Crush it up and only move it a few miles over to where you need it. Rather than hauling that to a landfill where it sits forever, costing energy use to haul, and more energy use to bring the fill and other bade materials from a further destination.