this post was submitted on 29 Jul 2024
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Climate - truthful information about climate, related activism and politics.

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Discussion of climate, how it is changing, activism around that, the politics, and the energy systems change we need in order to stabilize things.

As a starting point, the burning of fossil fuels, and to a lesser extent deforestation and release of methane are responsible for the warming in recent decades: Graph of temperature as observed with significant warming, and simulated without added greenhouse gases and other anthropogentic changes, which shows no significant warming

How much each change to the atmosphere has warmed the world: IPCC AR6 Figure 2 - Thee bar charts: first chart: how much each gas has warmed the world. About 1C of total warming. Second chart: about 1.5C of total warming from well-mixed greenhouse gases, offset by 0.4C of cooling from aerosols and negligible influence from changes to solar output, volcanoes, and internal variability. Third chart: about 1.25C of warming from CO2, 0.5C from methane, and a bunch more in small quantities from other gases. About 0.5C of cooling with large error bars from SO2.

Recommended actions to cut greenhouse gas emissions in the near future:

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Germans Combat Climate Change From Their Balconies: Plug-and-play solar panels are popping up in yards and on balcony railings across Germany, driven by bargain prices and looser regulations. (www.nytimes.com)
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[–] DarkThoughts@fedia.io 7 points 3 months ago (2 children)

Are you claiming that solar panels have a positive co2 footprint? This policy change was a massive step to a) boost solar power and b) boost decentralized energy security. Calling this "consumerism" is absolutely moronic.

[–] sping@lemmy.sdf.org -1 points 3 months ago* (last edited 3 months ago) (2 children)

Are you claiming that solar panels have a positive co2 footprint?

Wait, are you claiming they don't? (assuming you mean a positive CO₂ footprint means net emission of CO₂).

Solar panels absolutely don't reduce CO₂. They make things worse more slowly, just as electric cars do, but they're still making things worse. They are most certainly not carbon neutral, let alone permanently capturing CO₂. They're an energy multiplier, which is less bad than using the energy without the multiplier, but it isn't a net positive.

Which I think is probably the crux of OPs point.

Edit: WTF, where are OP's messages? They weren't abusive from my memory, they were quite the opposite of climate-crisis-denying. They were perhaps hyperbolic and absolutist, but I from my memory of them there was no reason to remove them.

[–] set_secret@lemmy.world 3 points 3 months ago

Solar panels do not have a positive CO2 footprint in the sense that they are net emitters of CO2. While the production of solar panels generates CO2 emissions, studies have shown that the overall carbon footprint of solar panels is significantly lower than that of traditional fossil fuel-based energy sources.

A life-cycle assessment of solar panels found that the carbon footprint of solar panels is approximately 20-50 grams of CO2-equivalent per kilowatt-hour (kWh) of electricity generated . In contrast, the carbon footprint of coal-fired power plants is around 1,000 grams of CO2-equivalent per kWh .

Research suggests that solar panels can offset their life-cycle emissions within 2-4 years of operation, and can generate clean energy for decades beyond that . A study published in the journal Environmental Science & Technology found that the net carbon emissions savings from solar panels can be up to 78% compared to traditional fossil fuel-based energy sources.

hardly slighty less shit id say.

References:

Fthenakis, V. M., & Kim, H. C. (2011). Life-cycle greenhouse gas emissions of solar panels. Renewable and Sustainable Energy Reviews, 15(8), 3521-3533.

IPCC (2013). Climate Change 2013: The Physical Science Basis. Contribution of Working Group I to the Fifth Assessment Report of the Intergovernmental Panel on Climate Change.

Reich, N. H., & Alsema, E. A. (2017). Environmental impacts of solar energy systems. In Solar Energy Engineering (pp. 255-274). Academic Press.

Perez, M. J. R., Fthenakis, V. M., & Kim, H. C. (2019). Life-cycle greenhouse gas emissions and net energy analysis of solar panels. Environmental Science & Technology, 53(11), 6453-6462.

[–] DarkThoughts@fedia.io 1 points 3 months ago

Wait, are you claiming they don't? (assuming you mean a positive CO₂ footprint means net emission of CO₂).

Well, yes. As opposed to a negative footprint, for things that maybe not directly reduce co2 by indirectly, such as renewable energies - solar panels being one of them.

Solar panels absolutely don't reduce CO₂. They make things worse more slowly, just as electric cars do, but they're still making things worse. They are most certainly not carbon neutral, let alone permanently capturing CO₂. They're an energy multiplier, which is less bad than using the energy without the multiplier, but it isn't a net positive.

Which I think is probably the crux of OPs point.

Hence my cave & stone tablet comment. OP surely does not own a carbon neutral computer and uses a carbon neutral internet. But yes, technically speaking solar panels are carbon neutral, since they can generate more power than they consume. Obviously this very much depends on what this energy is ultimately used for but that's just pedantic.