Renewable energy advances faster than anyone predicted, the real weapon against climate change
Solar prices fell to less than one-sixth of their original level in a decade; countries cut emissions faster than expected, but global emissions still rise annually.
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The host admits climate coverage pushes toward despair
The host admits that as climate change's impacts on his own life grew more visible, he found it harder to continue reporting on the topic, often feeling that 'more bad news' had exhausted both him and his audience, leaving him with a sense of helplessness—that 'we can't do anything.' This episode tests whether that emotional response holds up to scrutiny, or whether the data tells a different story.
— Nic PetrucciolSolar power has become six times cheaper in a decade
Hannah Ritchie notes that renewable energy was far more expensive than fossil fuels a decade ago, with solar, wind, batteries, and electric vehicles all immature. But according to investment firm Lazard's estimates, between 2009 and 2025, solar prices fell to less than one-sixth of their previous level, and today wind and solar are the cheapest energy sources. For the first time, short-term economic incentives and long-term climate goals align—this is the core reason Ritchie shifted from pessimism to optimism.
— Hannah RitchieElectric vehicles beat gasoline cars on climate, despite the disputes
Electric vehicles face criticism over the environmental cost of lithium mining and for consuming public resources, but Hannah Ritchie emphasizes that on pure climate emissions, electric vehicles outperform gasoline cars in every scenario. Moreover, electric vehicles consume only about one-third the energy of gasoline vehicles. In Norway, 97% of new car sales are electric; in China, 53%. The efficiency gains from electrification are being underestimated as a climate win.
— Hannah RitchieAI power forecasts diverge wildly because AI's future shape is unknown
Energy analyst Ketan Joshi notes that predictions for data centre power consumption vary wildly—some say they'll reach 4-5% of global energy use by 2030, others claim they could reach 20% over the coming decades. The discrepancy is not a methodological flaw but rather deep uncertainty: AI's future form, whether it represents a bubble, and whether it follows a high-intensity or low-intensity energy path are all unknowns. These 'ten intersecting vectors of uncertainty' render traditional linear forecasting tools useless. Today, data centres account for roughly 2% of global energy consumption.
— Ketan JoshiMicrosoft, Google, Amazon now burn more power for the same revenue
Ketan Joshi's analysis of recent financial reports from the three tech giants reveals they are generating equivalent revenue growth while consuming more energy—unlike the computing industry historically, which grew increasingly efficient. Joshi interprets this as companies piling on compute power regardless of energy cost to build smarter chatbots or agents. Meanwhile, Microsoft has stopped using the controversial renewable energy certificate methodology to account for emissions; its latest report shows a sharp increase in emissions.
— Ketan JoshiU.S. electricity demand is rising faster than new supply arrives
U.S. energy-related carbon dioxide emissions rose roughly 2% in 2025, even as emissions were expected to decline. Renewable capacity continues to grow, yet emissions rise—meaning new electricity demand is being met primarily by fossil fuels like coal. Reports from the Energy Institute and Rhodium Group attribute this to surging power demand from data centres and AI, combined with a cold winter and a rebound in coal use.
— Ketan JoshiWe've improved the century-end temperature forecast from 3.5 to 2.5 degrees
Climate policy analyst Niklas Höhne notes that ten years ago, based on the policies then in place, projections showed warming of 3.5 degrees by century's end. Under currently implemented policies, that forecast has improved to about 2.5 degrees—a full degree of improvement. However, he stresses this falls far short of the Paris Agreement's 1.5-degree target, and global greenhouse gas emissions continue rising each year, meaning humanity is not stopping climate change but accelerating it.
— Niklas HöhneThe Strait of Hormuz crisis unexpectedly accelerates the energy transition
Niklas Höhne offers a surprising observation: while dismantling federal climate policy under a Trump administration will slow U.S. emissions reductions, the downward emissions trend from the start of the century will likely persist. More striking: the oil and gas price shock from Hormuz Strait closure is pushing countries heavily dependent on fuel imports toward alternative energy sources. China's oil consumption is estimated to have dropped 10-20% over twelve months, and Höhne sees this having the potential to push the energy transition past a tipping point.
— Niklas HöhneIn their own words · checked verbatim
Sometimes it just feels like more bad news at a time where our audience and I could do with less. I feel hopeless. But is that actually right? Am I justified in that feeling?
Nic Petrucciol2:07
there is an inherent uncertainty as to what the technology is, what it's going to be used for, whether it's hype, whether it's real, whether we go for high energy consumption models or low energy consumption models. There's like 10 crisscrossing vectors of uncertainty that make it really, really hard to say what's going to happen.
Ketan Joshi13:56
all three of those companies are using more energy to earn the same amount of revenue, if that makes sense
Ketan Joshi14:57
What we as humans often underestimate is exponential change. The system is changing at exponential speed. And that means each year more solar is implemented than we thought before, or more batteries are implemented, more electric cars.
Niklas Höhne24:19
We regularly look at who is basically the best, which is the best country around the world. And the places one, two, three are always empty. So no country is doing everything correct.
Niklas Höhne27:23
that has the potential to move this energy transition over the edge, so to say, and over the tipping point, that it will be self-propelling
Niklas Höhne31:37
We have all the tools at hand, and even now it's economic, and the obstacle is not technology. The obstacle is not. The obstacle is our inertia in the system and that some lose something and some others gain something.
Niklas Höhne34:44
Figures
| Solar price decline (2009-2025) | Less than one-sixth of original level | 6:16 |
| Cement production share of global carbon emissions (2024) | Approximately 6% | 9:33 |
| Norway new car electric vehicle share | 97% | 7:18 |
| China new car electric vehicle share | 53% | 7:18 |
| Data centre share of global energy consumption | Approximately 2% | 14:57 |
| U.S. energy-related carbon dioxide emissions increase (2025) | Approximately 2% | 18:08 |
| Century-end warming forecast revision | 3.5°C to 2.5°C | 22:18 |
| China oil consumption reduction (12 months) | 10-20% | 32:41 |
Glossary
- data centre moratoriums
- Local government suspensions of new data centre approvals, typically triggered by energy consumption, water use, or community disruption concerns.
- renewable energy certificates
- Documents purchased by companies to offset their reported carbon emissions, functioning similarly to carbon offsets.
- endangerment finding
- A legal determination by the U.S. Environmental Protection Agency that greenhouse gases pose a threat to public health—the legal basis for climate policy enforcement.
How to listen
Founders, investors, and professionals who are pessimistic about climate data, want to know if conditions are actually improving, and want to verify whether AI energy consumption claims rest on solid evidence.