this post was submitted on 31 May 2025
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The roughly two-hectare facility, still under construction, is hosting what could be called a carbon removal Olympics. It will pilot eight different versions of a similar technology using various machines that will suck in air, remove the carbon dioxide and send it to a central plant where it will be compressed and liquified for storage deep underground.

The winner of this initiative wouldn't get a medal on a podium. Instead, Deep Sky, the Montreal-based project developer behind it, plans to take the best versions of the direct air capture technology that prove most effective in Canada's climate and deploy them on a commercial scale all over the country.

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[–] Thedogdrinkscoffee@lemmy.ca 26 points 3 months ago* (last edited 3 months ago) (24 children)

So far DACC is a scam. The energy costs to capture carbon have always proven near as high or higher than the energy gained from burning fossil fuels. It's always been unviable and treating any of it as anything but research projects is 100% bs.

Fossil fuel companies have vested interests in perpetuating the myth that we can clean up our mess after the fact. Think about how insane this proposition is! How can a world that has to drastically reconfigure itself to run on a renewables eroei of roughly 3 to 1, find the surplus energy to recapture capture carbon when the 100:1 eroei of fossil fuels are no longer available? The superorganism known as human civilization won't have the surplus energy to handle its own metabolic needs and recapture carbon.

A surface gusher of light sweet crude used to give 100:1. The last 30 years have seen eroei decline from 30-1 to 18-1 today as an average with tight oil going as low as 5-1.

This article is false hope. Sickly sweet paliative medicine given to terminal patients. There there dear. Your suffering will soon be over and everything will be beautiful again in the afterlife.

[–] jonne 4 points 3 months ago (18 children)

In theory you could run it on excess solar and turn it off the rest of the time, but of course if you're running it only part of the time it'll take you longer to capture CO2, and not every process can actually be easily turned off and on.

[–] Rentlar@lemmy.ca 2 points 3 months ago (5 children)

I agree with this. I don't want to expand fossil fuel generation, but with renewable generation proliferating and potential breakthroughs in the long term, using excess available energy to try to reverse the emissions we had already put in the air could be beneficial.

[–] Thedogdrinkscoffee@lemmy.ca 1 points 3 months ago (1 children)

Excess available energy. We've never had that before. Despite all our renewables development is has only supplemented our energy, never displacing fossil fuels.

[–] Rentlar@lemmy.ca 2 points 3 months ago (1 children)

It all depends on the province you are from. NL, BC, MB, QC have long had massive excesses in energy and nearly zero fossil fuel generation, as still the case today. Canadian provinces keep selling to neighbouring US states for a healthy profit since we have too much here. ON got rid of coal for LNG and are developing wind and solar, so they don't have to rely on their gas peak time plants as hard going forward.

The capacity to deliver energy is one thing but the other is the time and rate at which you do. Fossil fuel is good at ramping up on demand while renewables are beholden to weather changes, and on the other side the power demand rate is relatively predictable in terms of the time of day (I've worked in this industry). Renewable tech including batteries and hydro storage will displace the need to use those LNG plants further.

[–] Thedogdrinkscoffee@lemmy.ca 1 points 3 months ago (1 children)

This is a surplus of electricity while we are still using fossil fuels.

Cut out fossil fuels and power EVERYTHING with electricity and we'll see how much "surplus" we have.

[–] Rentlar@lemmy.ca 1 points 3 months ago (1 children)

Displacing doesn't necessarily mean cut everything out at once, it can include a gradual reduction/ramp down as the other increases by similar amounts at a time.

[–] Thedogdrinkscoffee@lemmy.ca 0 points 3 months ago

It can, but it doesn't.

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