this post was submitted on 27 Jun 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.

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One method of making electricity cleanly to address climate change has been quietly advancing and on Tuesday it hit a milestone.

A California utility is backing the largest new geothermal power development in the U.S. — 400 megawatts of clean electricity from the Earth’s heat — enough for some 400,000 homes.

Southern California Edison will purchase the electricity from Fervo Energy, a Houston-based geothermal company, Fervo announced.

The company is drilling up to 125 wells in southwest Utah.

Clean electricity like this reduces the need for traditional power plants that cause climate change. The boost could go a long way toward bringing down the cost of a new generation of geothermal energy, said Wilson Ricks, an energy systems researcher at Princeton University.

“If these purchases help to get this technology off the ground, it could be massively impactful for global decarbonization,” he said. Decarbonization refers to switching out things that produce carbon dioxide and methane, which cause the climate to change, in favor of machines and methods that don’t.

Today the world still relies mainly on fossil fuels for round-the-clock power. This new deal shows that clean power can meet a growing demand for electricity, said Sarah Jewett, vice president of strategy at Fervo.

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[–] fpslem 11 points 4 months ago* (last edited 4 months ago) (4 children)

If you want to dig deeper on how the company Fervo works, the CEO did an interview with David Roberts of Volts last year which was pretty interesting. This stuff isn't hypothetical, it's working right now, and apparently it's profitable. I know huge portions of electricity demand can be addressed through wind and solar, perhaps at lower cost than enhanced geothermal for now, but the ability of enhanced geothermal to keep producing energy when the wind doesn't blow and the sun doesn't shine is really key.

https://www.volts.wtf/p/enhanced-geothermal-power-is-finally

[–] Num10ck 4 points 4 months ago (1 children)

hasnt europe been doing this for a while now?

[–] Valmond 3 points 4 months ago

Yep, there were, for example, a mayor in Jonzac who made geo thermal for the whole village sometimes in the eighties (IIRC), it still runs today and I think all heat is just free.

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