this post was submitted on 03 May 2025
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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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[–] meyotch@slrpnk.net 26 points 1 month ago* (last edited 1 month ago) (3 children)

Part is regulations. Utah, of all places, recently passed legislation that requires utilities to allow small solar systems to plug into home systems without an application or fee from the utility.

up to 1200kWac

[–] P00ptart@lemmy.world 14 points 1 month ago (1 children)

Where I live, you can buy solar, but the energy isn't yours. You can't install a battery and the energy generated only gets you a discount, but never gets you below zero. Essentially you're buying the energy company some equipment for a discount on your bill.

[–] hash@slrpnk.net 7 points 1 month ago (1 children)

The other part is lack of tenant rights. Which Utah will not be a leader on anytime soon. Our leases have half page long restrictions on what can and can't be on your balcony and the legislature isn't about to back up renters.

[–] meyotch@slrpnk.net 2 points 1 month ago

It took me a while to reply to this. I thought it was a really good comment though.

I didn’t think about landlords doing their usual douchey thing. But of course this is going to happen because anything that disturbs some apartment owners arbitrary aesthetic vision is going to be banned easily.

I read the legislation. it’s only five pages. It is really biased for single home owners without being explicit about that.

The actual law

I think I did the estimate correctly, under typical sunny Utah conditions you would only make about a dollar worth of electricity a day at current rates with the maximum allowed system.

[–] labsin@sh.itjust.works 5 points 1 month ago (1 children)
[–] meyotch@slrpnk.net 1 points 1 month ago

Yes, 1.2kWac. Did I do the estimate correctly? My quick estimate of the power yield under Utah conditions is anywhere between a dollar and $1.50 a day? Does that seem to be in the ballpark?

[–] Breezy@lemmy.world 7 points 1 month ago

Why dont they just lease them to people and be paid by the electricity generated. Then when its paid off the owner gets the profits.

[–] HubertManne@piefed.social 5 points 1 month ago (1 children)

I still don't understand these. Like I would think you need a batter system that could handle the grid to begin with.

[–] eleitl@lemm.ee 3 points 1 month ago (2 children)

They inject power into your local single phase circuit, with surplus escaping into the grid. Where it gets no farther than to the next consumer. There are kits with few kWh buffer battery which can aim for zero feed in if you're not feeling altruistic.

[–] HubertManne@piefed.social 2 points 1 month ago (1 children)

I thought you could not send power into the grid without a setup to shutdown in case someone is working on the grid or something like that.

[–] eleitl@lemm.ee 4 points 1 month ago (1 children)

The solar inverter shuts down in milliseconds if it detects that mains power is gone. The reason for it is the one you cited.

This behaviour can be changed with a different firmware.

[–] HubertManne@piefed.social 2 points 1 month ago

ooh nice. you know I have seen many articles on there and they talk about just needing any old plug but I just could not see it. Sounds like it is a real possibility.

[–] HaraldvonBlauzahn@feddit.org 2 points 1 month ago (1 children)

In Germany, which has very strict regulations, there was some discussion and now small balcony solar systems can feed back into the grid, turning the meter backwards. One has to register it and in theory the utility company will install a smart meter, but often, the latter does not happen (and the former is rarely controlled). (And for safety, the panels and inverters will switch off if the grid is down.)

[–] eleitl@lemm.ee 2 points 1 month ago

Most but the oldest mechanical meters cannot run backwards. Whatever you don't consume is gifted to the grid.

[–] humanspiral@lemmy.ca 4 points 1 month ago

Power station vendors have a solution for US. Smart plugs that never backflow to grid. US utility monopolies hate solar, but the most friendly solar regulation possible is low fixed monthly fees for low amp inflow cap (with high per kwh rates), or permission for homes to be off grid.

Even with forced grid connections, there is a ROI case for self consumption only solar that requires no grid permissions for no grid sell back/credits. Powerstations are a fairly easy method, for portable power that can be rearranged in home, including DC power efficiency benefits. Multiple power stations can deal with shading and multiple panel orientations, can deal with power outages, and provide emergency power in rooms where needed or fully mobile power. EVs can ensure you never have too much power stored, and while TOU rates still favour overnight charging, even (morning) kitchen needs can be shifted to solar or minimal/optimal grid charging.

Tariffs are a big obstacle for US now, but rest of Americas has similar grid. If consumers get extorted from data center demand preference, it is further reason to seek escape.