Tag • #energy

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US’s power grid continues to lower emissions—everything else, not so much

news.movim.eu / ArsTechnica · 3 days ago - 18:51

Graph showing total US carbon emissions, along with individual sources. Most trends are largely flat or show slight declines.

On Thursday, the US Department of Energy released its preliminary estimate for the nation's carbon emissions in the previous year. Any drop in emissions puts us on a path that would avoid some of the catastrophic warming scenarios that were still on the table at the turn of the century. But if we're to have a chance of meeting the Paris Agreement goal of keeping the planet from warming beyond 2° C, we'll need to see emissions drop dramatically in the near future.

So, how is the US doing? Emissions continue to trend downward, but there's no sign the drop has accelerated. And most of the drop has come from a single sector: changes in the power grid.

Off the grid, on the road

US carbon emissions have been trending downward since roughly 2007, when they peaked at about six gigatonnes. In recent years, the pandemic produced a dramatic drop in emissions in 2020, lowering them to under five gigatonnes for the first time since before 1990, when the EIA's data started. Carbon dioxide release went up a bit afterward, with 2023 marking the first post-pandemic decline, with emissions again clearly below five gigatonnes.

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EPA issues four rules limiting pollution from fossil fuel power plants

news.movim.eu / ArsTechnica · 4 days ago - 15:07 · 1 minute

Image of a cloud of white smoke erupting from a large, metal smokestack.

Enlarge (credit: Jose A. Bernat Bacete )

Today, the US Environmental Protection Agency announced a suite of rules that target pollution from fossil fuel power plants. In addition to limits on carbon emissions and a tightening of existing regulations on mercury releases, additional rules target coal ash waste left over from power generation and contaminants in the water used during the operation of power plants. While some of these regulations will affect the operation of plants powered by natural gas, most directly target the use of coal and will likely be the final nail in the coffin for the already dying industry.

The decision to release all four rules at the same time goes beyond simply getting the pain over with at once. Rules governing carbon emissions are expected to influence the emissions of other pollutants like mercury, and vice versa. As a result, the EPA expects that creating a single plan for compliance with all the rules will be more cost-effective.

Targeting carbon

The regulations that target carbon dioxide emissions have been in the works for roughly a year. The rules came in response to a Supreme Court decision in West Virginia v. EPA , which ruled that Clean Air Act regulations had to target individual power plants rather than giving states flexibility regarding how to meet broader standards. As a result, the new rules target carbon dioxide the only way they can: Plants can either switch to burning non-fossil fuels such as green hydrogen, or they can capture their carbon emissions.

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Fears grow over rising number of oil lobbyists at UN plastic pollution talks

news.movim.eu / TheGuardian · 4 days ago - 13:44

Proposed global treaty to curb production represents challenge to producers of fossil fuels, from which most plastics are made

The number of fossil fuel and petrochemical industry lobbyists at UN talks to agree the first global treaty to cut plastic pollution has increased by more than a third, according to an analysis.

Most plastic is made from fossil fuels, via a chemical process known as cracking, and 196 lobbyists from both industries are at the UN talks in Ottawa, Canada, where countries are attempting to come to an agreement to curb plastic production as part of a treaty to cut global plastic waste, according to analysis by the Center for International Environmental Law (Ciel).

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Global battery rollout doubled last year – but needs to be six times faster, says IEA

news.movim.eu / TheGuardian · 4 days ago - 11:17

Energy watchdog warns pace must accelerate to hit targets after new batteries increased capacity by 130%

The rollout of batteries across the global electricity industry more than doubled last year but will need to be six times faster if the world hopes to meet its renewable energy targets, according to the International Energy Agency (IEA).

A report from the global energy watchdog found that new batteries totalling 42 gigawatts (GW) were plugged into electricity systems around the world last year, increasing total capacity by more than 130% from the year before to 85GW.

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Climate crisis: average world incomes to drop by nearly a fifth by 2050

news.movim.eu / TheGuardian · Wednesday, 17 April - 15:21

The cost of environmental damage will be six times higher than the price of limiting global heating to 2C, study finds

Average incomes will fall by almost a fifth within the next 26 years as a result of the climate crisis, according to a new study that shows the costs of damage are six times higher than the price of limiting global heating to 2C.

Rising temperatures, heavier rainfall and more frequent and intense extreme weather are projected to cause $38tn (£30tn) of destruction each year by mid-century, shows the research published in the journal Nature , which is the most comprehensive analysis of its type ever undertaken.

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‘An energy war is being waged’: former oil boss warns of price rises after Ukraine infrastructure attacks

news.movim.eu / TheGuardian · Sunday, 14 April - 11:36

Andriy Kobolyev calls for more weapons after Russia destroys one of Ukraine’s largest power plants

A dramatic rise in European energy prices is inevitable if the Russian destruction of Ukrainian energy infrastructure continues unabated, the former chief executive of Ukraine’s state-owned oil company has warned.

Andriy Kobolyev, a former head of Naftogaz, said in an interview with the Guardian: “Russia is trying to wage a global energy war and Ukraine is part of that war and if the markets perceive that Russia is winning that war the consequences will be very serious. You will see a spike in prices all round the globe”.

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How new tech is making geothermal energy a more versatile power source

news.movim.eu / ArsTechnica · Saturday, 13 April - 10:33

The Nesjavellir Geothermal Power Station. Geothermal power has long been popular in volcanic countries like Iceland, where hot water bubbles from the ground.

Enlarge / The Nesjavellir Geothermal Power Station. Geothermal power has long been popular in volcanic countries like Iceland, where hot water bubbles from the ground. (credit: Gretar Ívarsson/Wikimedia Commons)

Glistening in the dry expanses of the Nevada desert is an unusual kind of power plant that harnesses energy not from the sun or wind, but from the Earth itself.

Known as Project Red, it pumps water thousands of feet into the ground, down where rocks are hot enough to roast a turkey. Around the clock, the plant sucks the heated water back up to power generators. Since last November, this carbon-free, Earth-borne power has been flowing onto a local grid in Nevada.

Geothermal energy, though it’s continuously radiating from Earth’s super-hot core, has long been a relatively niche source of electricity, largely limited to volcanic regions like Iceland where hot springs bubble from the ground. But geothermal enthusiasts have dreamed of sourcing Earth power in places without such specific geological conditions—like Project Red’s Nevada site, developed by energy startup Fervo Energy.

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UK startup lifts lid on plan to turn human waste into aircraft fuel

news.movim.eu / TheGuardian · Thursday, 11 April - 16:29

Low-cost airline Wizz Air puts in 525,000-tonne order for product of Firefly’s proposed refinery in Essex

Aircraft could one day take off on fuel made from human waste under plans revealed by Wizz Air and the British sustainable aviation company Firefly to build a commercial refinery in Essex.

Firefly, based in Bristol, said it had developed a process to convert treated sewage into sustainable aviation fuel , or SAF.

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World’s coal power capacity rises despite climate warnings

news.movim.eu / TheGuardian · Thursday, 11 April - 04:00

Increase of 2% last year driven by plant expansion in China and slowdown in US and Europe closures

The world’s coal power capacity grew for the first time since 2019 last year, despite warnings that coal plants need to close at a rate of at least 6% each year to avoid a climate emergency.

A report by Global Energy Monitor found that coal power capacity grew by 2% last year, driven by an increase in new coal plants across China and a slowdown of plant closures in Europe and the US.