r/climatechange 4d ago

Climate Hopium thread #9

47 Upvotes

The recent severe weather worldwide has led to a flood of people seeking reassurance about our efforts to mitigate climate change. Most of those posts have been removed, and from now on will be directed to this weekly thread.

Climate change is a severe, compounding issue, but only if we do not address it - with concerted efforts, it can be managed.

Our efforts over the years have resulted in the worst-case RCP 8.5 high emission scenario being retired - it is now no longer considered plausible that we will hit +4C by 2100.

The 4°C world quietly stopped being the forecast

The progress can be seen in the reduction of predicted 2100 temperatures over the years by Climate Action Tracker above.

The main projection for our current policies is around +2.4 to 2.6°C and we can expect this to further reduce in the future.

We have seen emissions growth slow to around 1% per year, and are likely to peak soon. IRENA notes that our renewable energy efforts have already avoided 8.4 Gigatons of CO2 emissions in 2025.

Avoided emissions

This has largely been due to the move away from coal, and now renewables are increasingly challenging fossil fuels, with solar+wind about to overtake natural gas for global electricity production.

Good news over the last week.

Perhaps the most important news this week is simply what is starting to appear in the actual emissions data. Carbon Monitor estimates that global fossil-fuel and cement CO2 emissions were essentially flat in the first half of 2026 compared with H1 2025, while Climate TRACE's broader estimate of total greenhouse-gas emissions puts the increase at only 0.2%. Both datasets also show emissions declining in China and the United States. These are preliminary estimates covering somewhat different things, and a plateau is obviously not yet the sustained decline we need. But after decades in which global emissions generally marched upward, multiple near-real-time datasets now putting growth close to zero is an encouraging sign that the long-anticipated global emissions peak may be getting close.

India has meanwhile passed an important milestone in the physical infrastructure of its energy system. Clean-energy capacity now exceeds fossil-fuel capacity for the first time, at around 331.7 GW versus 302 GW. Solar alone has reached roughly 211 GW, and between the beginning of 2025 and mid-2026 India added about 75.5 GW of solar compared with only 3.8 GW of coal. Coal still generates around 70% of India's electricity, so this is a capacity tipping point rather than a generation tipping point, but it shows very clearly where most new investment and infrastructure are now going.

One of the biggest remaining problems for solar is what happens after sunset, and this is increasingly becoming a battery story. Ember finds that the rapid battery build-out is bringing something closer to round-the-clock solar: solar supplied more than 10% of global electricity in H1 2026, while new battery installations are projected to reach around 459 GWh this year, 50% more than in 2025. Ember estimates that this year's new batteries could theoretically shift the equivalent of about a third of new daily solar generation into non-solar hours. This is already becoming visible in real electricity markets: large battery fleets in California and Texas are increasingly supplying the evening peak and driving down prices during hours previously dominated by gas peaker plants. Solar's intermittency has not disappeared, but the technology being deployed alongside it is improving extremely quickly.

Transport electrification is beginning to show up not merely in vehicle-sales statistics but in the oil market itself. Sinopec now says China's oil demand very likely peaked in 2025, with domestic fuel demand falling as EVs, efficiency and changes in the economy reshape consumption. China's largest refiner is itself responding by increasing investment in new-energy businesses. At the same time, battery-electric cars exceeded 25% of new registrations across 16 major European markets in July, with nearly 1.5 million BEVs registered so far this year, around 30% more than at the same point in 2025. EV adoption is increasingly large enough to have macro-level consequences for fuel demand.

Distributed energy is becoming more accessible as well. Plug-in solar panels became legal in Great Britain this week. The small systems can provide up to 800 W and, according to the government, potentially supply as much as 20% of an average household's electricity consumption. This is not a huge contribution to the national grid by itself, but it opens solar to many households that cannot justify or install a conventional rooftop system and follows the remarkably rapid spread of similar "balcony solar" systems elsewhere in Europe.

There was also an interesting demonstration of how adaptation can work with natural systems rather than simply defending against them. Restored rivers and wetlands at the National Trust's Holnicote Estate remained green through this summer's repeated heatwaves while much of the surrounding countryside dried out. Reconnecting rivers to floodplains, restoring wetlands and reintroducing beavers has allowed the landscape to retain water during drought while also slowing runoff during heavy rainfall. That combination — reducing drought damage and flood risk with the same intervention — illustrates why ecosystem restoration is increasingly being treated as climate infrastructure rather than simply conservation.

Nature-based systems may also have useful mitigation applications. A two-year full-scale experiment found that constructed floating wetlands can substantially reduce greenhouse-gas emissions from wastewater lagoons. CO2-equivalent emissions were 22–31% lower in the treated section, driven particularly by methane reductions of 32–66%. Wastewater treatment accounts for roughly 1.6% of anthropogenic greenhouse-gas emissions, so techniques that can be cheaply added to existing ponds and lagoons could have considerably wider application.

Finally, there was an intriguing piece of early-stage industrial research. Scientists demonstrated an artificial-photosynthesis process that produces ammonia from nitrogen and water at room temperature using light, and showed that it works with natural seawater and even nitrogen taken directly from ambient air. Conventional ammonia production is responsible for roughly 1.8% of global greenhouse-gas emissions. This remains laboratory research rather than a replacement for Haber-Bosch — scale, light requirements and economics remain to be demonstrated — but it is an example of how even some of the harder industrial emissions are becoming active targets for entirely different technological pathways.

Points from earlier posts

The biggest lie I constantly read here is that nothing is being done - we are in fact spending trillions of dollars each year on mitigating climate change via paying for the energy transition.

The best thing you can do to support climate action is to support politicians making policies that benefit the climate.

The second thing is personal action, and here is a list from Project Drawdown: Join the shift

Infographic

Please contribute any other climate good news in the thread below - it will be heavily and actively moderated - note Rule 5 and Rule 6.


r/climatechange 12h ago

Costco takes Florida distribution center off grid with on-site solar and batteries. 🌞 The system was completed faster than a conventional backup-power project, and will support round-the-clock reliability against outages. 💰 It'll also supply lighting, refrigeration, HVAC, and EV charging. 🚙

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thecooldown.com
726 Upvotes

r/climatechange 7h ago

China now has more solar capacity than coal capacity

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euronews.com
243 Upvotes

r/climatechange 1h ago

The Low and Medium-Low emission scenarios for the new CMIP-7 climate models are eminently achievable

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Upvotes

https://www.carbonbrief.org/wp-content/uploads/2026/08/The_new_CMIP72C_chart_2.png

Carbonbrief wrote about the new CMIP7 emissions scenarios today and what is notable is how modest the Low and Medium-Low pathways actually are when expressed in terms of emissions levels and net zero.

The Low scenario has global net CO₂ emissions falling to about 35–36 GtCO₂/yr by 2030, roughly 13–15% below 2023 levels, broadly consistent with existing national climate pledges. Emissions then continue declining until net-zero CO₂ around 2070. Its median warming outcome is about 1.8°C in 2100.

The Medium-Low scenario is considerably less demanding. It follows roughly the current-policy Medium pathway until around 2040, then emissions decline gradually, reaching net-zero CO₂ around 2100. Its median warming outcome is about 2.3°C.

Scenario Emissions path Net-zero CO₂ 2100 warming
Low Falls to ~35–36 GtCO₂/yr by 2030, then continues declining ~2070 ~1.8°C
Medium-Low Roughly current-policy path until ~2040, then decline ~2100 ~2.3°C
Medium Policies broadly frozen at present levels Not this century ~2.9°C

The Low scenario therefore does not require anything close to a halving of emissions by 2030. It requires only roughly a 15% reduction from 2023 levels by 2030, followed by sustained decarbonisation over another four decades.

Medium-Low is more relaxed still. It effectively allows another decade and a half of relatively weak climate action before serious decarbonisation begins.

That is slower than many existing national commitments. China targets carbon neutrality by 2060, India by 2070, while most developed economies formally target around 2050. The IEA's Stated Policies Scenario also already projects global energy-related CO₂ emissions peaking in the near term rather than around 2040.

What about all the carbon removal?

Both scenarios contain large amounts of carbon dioxide removal, but the headline numbers need context.

Carbon Brief estimates cumulative CDR of roughly 1,360GtCO₂ in Low and 1,450GtCO₂ in Medium-Low between 2024 and 2150.

That does not mean 1.45 trillion tonnes of removal is required simply to keep Medium-Low near 2.3°C in 2100.

Much of Medium-Low's removal occurs after 2100, because the scenario is deliberately extended as an overshoot pathway in which sustained net-negative emissions gradually bring temperatures back towards 1.5°C over subsequent centuries.

CDR also partly reflects assumptions about hard-to-abate emissions. Integrated-assessment models often retain residual emissions from aviation, shipping, cement, agriculture and other difficult sectors, then offset them with carbon removal rather than eliminating them completely.

If future technology makes more of those residual emissions cheap to eliminate directly, less CDR could be needed for the same net-emissions trajectory.

The large CDR figures therefore combine three different functions: offsetting residual emissions, pushing emissions below zero, and—especially after 2100 in Medium-Low—reversing some earlier warming.

CMIP7's range has shifted downwards

Previous climate-model generations included extreme fossil-fuel expansion scenarios such as SSP5-8.5 producing close to 5°C of warming. CMIP7's new High scenario produces around 3.3°C, reflecting the fact that such extreme coal and fossil-fuel growth trajectories are no longer considered plausible enough to define the main upper end of the scenario range.

That leaves a much narrower set of futures:

  • about 2.9°C if today's policies broadly stop strengthening;
  • about 2.3°C if stronger decarbonisation begins around 2040;
  • about 1.8°C if emissions fall to around 35–36 GtCO₂ by 2030 and the world reaches net-zero CO₂ around 2070.

The Low and Medium-Low pathways therefore do not depend on fantastical rates of decarbonisation.

Low requires a fairly modest decline this decade, followed by sustained reductions over several decades.

Medium-Low allows considerably more delay, with net zero pushed all the way to the end of the century.

Against the continuing growth of renewable energy, batteries, electric vehicles and electrification more generally, both pathways appear eminently achievable.


r/climatechange 8h ago

Nepal Tragedy: The One Word No One Wants to Say

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timesnownews.com
105 Upvotes

r/climatechange 5h ago

Summer 2026 provisionally hottest on record for the UK

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metoffice.gov.uk
29 Upvotes

r/climatechange 15h ago

‘Breakthrough’ as Turkmenistan starts fixing ‘mindboggling’ methane mega-leaks

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theguardian.com
168 Upvotes

r/climatechange 19m ago

Europe adds 8.8 GW wind capacity in first half, WindEurope says, installations up 30% YoY

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Upvotes

r/climatechange 10h ago

Solar cuts ‘at least £400 from bills in even the cloudiest British areas’

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theguardian.com
31 Upvotes

r/climatechange 6h ago

Delhi govt to provide free 3KW rooftop solar panels to 2.3 lakh households: CM – ThePrint

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theprint.in
14 Upvotes

2.3 lakh = 230000


r/climatechange 19h ago

Columbine Disease

103 Upvotes

The glacial collapse and Nepal flood were so devastating and the imagery so visceral. But I remember (as a teenager) watching the columbine footage of kids moving through the school with guns. It was terrifying in a way that no one under 35 could understand... These were the American SUBURBS... angry white kids smoke pot and skip class, they don't plan a killing spree (super racist, I get it)... but 30 years later? School shootings are hardly click-bait. How many Nepal-like floods until diminishing emotional returns kick in? This year was the first time I saw Boston skies so hazy from wildfires... but next year, the year after that... the only people who will care about the next glacial flood or biblical wildfire will be prediction markets... gamblers. The rest of us? We'll be inured. "Columbine 'massacre'? How quaint."


r/climatechange 10h ago

Why Nepal Glacier Catastrophe Has Terrifying Lessons For Our Way Of Life

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thinkunthink.org
18 Upvotes

r/climatechange 10h ago

Researchers unveil sustainable spirulina solution to vitamin B12 deficiency

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sciencedaily.com
16 Upvotes

r/climatechange 1d ago

El Niño is now stronger than at any point in the last 1,000 years, study finds

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arstechnica.com
382 Upvotes

r/climatechange 1d ago

Lower pollution, longer range: How a new type of car tyre is reversing a hidden downside of EVs

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euronews.com
174 Upvotes

r/climatechange 1d ago

As Colorado burns, a novel climate change lawsuit seeking damages from oil companies heads to the Supreme Court

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nbcnews.com
175 Upvotes

r/climatechange 1d ago

A businessman bought a 23,000-acre Scottish sporting estate and spent over 2 decades rewilding it; 1 million native trees later, red squirrels have been reintroduced to the Alladale Wilderness Reserve, an eco-tourism retreat and a major ecological restoration project in the Scottish Highlands. 🌳🌼🐾

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timesofindia.indiatimes.com
505 Upvotes

r/climatechange 20h ago

How 19th-Century Scientists Predicted Global Warming - JSTOR Daily

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daily.jstor.org
22 Upvotes

r/climatechange 1d ago

The desert Southwest’s water supports millions of humans and acres of cow food. But the water is disappearing. Something’s got to give.

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bloomberg.com
129 Upvotes

r/climatechange 11h ago

Explainer: The CMIP7 emissions scenarios – and how they explore future climate change

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carbonbrief.org
3 Upvotes

r/climatechange 6h ago

Climate Deniers Use this Study to Support their Position

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1 Upvotes

Using AI, I did find problems with the research but wanted to raise awareness and to get thoughts.


r/climatechange 1d ago

25-year sodium-ion home battery debuts ahead of planned US rollout

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interestingengineering.com
72 Upvotes

r/climatechange 1d ago

Indonesia aims for 100 GW solar target by 2029, deploying ground-mounted, rooftop and floating solar power plants, as well as decentralized, smaller-scale solar systems, to replace diesel generation, electrify rural areas and villages, and strengthen the country’s energy security and independence. 🌞

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pv-magazine.com
12 Upvotes

r/climatechange 1d ago

EVs+PHEVs hit 27% global market share in July, up from 6% 5 years ago and 1% 10 years ago

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cleantechnica.com
61 Upvotes

r/climatechange 1d ago

How much air conditioning usage actually prevents heat deaths?

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phys.org
15 Upvotes