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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Why Balcony Solar Panels Haven’t Taken Off in the US (www.wired.com)
submitted 6 days ago by floofloof@lemmy.ca to c/climate@slrpnk.net
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[–] eleitl@lemm.ee 3 points 5 days 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.

[–] HaraldvonBlauzahn@feddit.org 2 points 4 days 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 4 days ago

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

[–] HubertManne@piefed.social 2 points 5 days 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 5 days 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 4 days 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.