this post was submitted on 26 Aug 2024
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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.

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The emissions from the EV are largely because we've not yet gotten fossil fuels out of electric generation.

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[–] [email protected] 33 points 2 months ago (3 children)

This is with the US electricity generation mix. That is a significant amount of gas and coal. In a country with a greener mix the emissions will diverge further.

[–] [email protected] 9 points 2 months ago (2 children)

I wonder how many EV owners in the US have solar panels on their houses? I bet it’s a larger percentage than ICE drivers.

[–] [email protected] 1 points 2 months ago (1 children)
[–] [email protected] 1 points 2 months ago

You've got my axe!

[–] [email protected] 1 points 2 months ago* (last edited 2 months ago) (1 children)

Solar panels on houses aren't the win they seem to be unless one lives in a market with an unstable grid and requires self-powering. It's nice to feel like you're "helping" but grid-scale solar will always win. Plus the whole home solar market is a complete scammy racket now unless one can find a reputable local company.

Looked into it a while ago, oftentimes the agreement has the solar company leasing your roof space for 30+ years, and during construction they have a carte blanche permission to access any part of your house at any time. After install, you have to then seek permission through them if you want to do anything to your roof. Hail storm caused a roof leak? Well, you'll be waiting a bit to have that taken care of. My favorite agreement was one with a California firm, you had 72 hours to cancel after signing and the only way to cancel was to telegram their California office.

They also do a piss-poor job of factoring in things like the expense of having to rewire your utility panel or the necessity of lopping off the tops of trees (which then reduces the carbon sink they were doing, and shade on the house) in the initial estimates and try to wave away the mushrooming expenses. If the company goes under and there's not a transfer of stewardship of the generating equipment, it can arbitrarily be disabled until the homeowner finds a way to manually override or a new vendor takes over in their stead.

[–] [email protected] 2 points 2 months ago* (last edited 2 months ago) (2 children)

As someone who has solar panels on their roof, this is a bunch of BS. They paid for themselves after five years. I didn’t lease them, I paid for the system and the city, state, and feds helped to offset the costs with rebates. I didn’t have to rewire my house. Without the panels, my summer HVAC bill would be twice what I pay each month.

[–] [email protected] 2 points 2 months ago

Depends of the solar vendor. Some do indeed have fucked up models. If I can ever afford it, I'm buying not leasing.

[–] [email protected] 1 points 2 months ago

5 years is a tight ROI! How much was the TCO?

[–] [email protected] 9 points 2 months ago (1 children)

Where I live, the majority of energy contracts are explicitly green, in which the producer guarantees the power was generated by renewable sources (mostly wind, water & solar). That would indeed skew the "greenness" even more.

[–] [email protected] 1 points 2 months ago

Depending where you are, a lot of those “green” supply contracts in the US are worthless RECs like overnight wind surplus in Texas, sold to consumers elsewhere (in an entirely different grid). In which case I would argue they are greenwashing.

[–] [email protected] 2 points 2 months ago

In the PNW, we've been all hydropower for generations.