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Modeling shows green roofs can cool cities and save energy (techxplore.com)

submitted 9 months ago by L4s@lemmy.world to c/technology@lemmy.world

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Modeling shows green roofs can cool cities and save energy::Extensive greenery coverage on building rooftops could significantly reduce temperatures at the city scale and decrease energy costs, according to a new study.

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[-] Whelks_chance@lemmy.world 41 points 9 months ago

Interesting that they note that the installation and upkeep are expensive. I wonder if they've factored the upkeep into the energy expenditure. Flat roofing is far worse than a pitched room for needing replacement etc.

Basically, it sounds good, but the research needs to consider the full lifecycle of these projects.

[-] Morphit@feddit.uk 9 points 9 months ago

8% reduction in peak AC usage would be huge. I don't have a good feel for numbers like that but I'd imagine it would take a lot of maintenance and roof replacements not not make a saving given that kind of energy reduction.

It would be nice if they could estimate some uncertainties and show where the break even is between energy reduction and upkeep energy expenditure.

[-] Pyr_Pressure@lemmy.ca 1 points 9 months ago

Perhaps terraced rooftops with drainage pipes under the soil so excess water can still drain into a gutter system to storm water collection.

[-] Skelectus@suppo.fi 30 points 9 months ago

I'd prefer if they just started with putting green on the streets.

[-] Nachorella@lemmy.sdf.org 32 points 9 months ago

And reduce the amount of lanes from 10 to 9? You're crazy, there's no way it'll work.

[-] UNWILLING_PARTICIPANT@sh.itjust.works 10 points 9 months ago

Let's do both! I welcome our imperfect solarpunk future with open arms

[-] nexusband@lemmy.world 9 points 9 months ago

Spain and Portugal laughing from their benches on their roofs...surrounded by lush green plants..

this post was submitted on 19 Feb 2024

215 points (100.0% liked)

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