| ▲ | toomuchtodo 5 hours ago | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
This is a common rebuttal, but not grounded in reality. Even assuming ~20% capacity factor for "apples to apples" comparison to legacy thermal and nuclear, solar and batteries are the cheapest form of power to install. Current geopolitical events spiking LNG costs make the math even more favorable towards renewables. https://ember-energy.org/latest-updates/24-hour-solar-now-ec... https://ember-energy.org/latest-insights/solar-electricity-e... ("104$/MWh: Achieving 97% of the way to 24/365 solar in very sunny regions is now affordable at as low as $104/MWh, cheaper than coal and nuclear and 22% less than a year earlier.") > Legacy power generation has much different numbers and isn't subject to the whims of the weather so installed capacity is a number that means something in that context. Legacy power is ridiculously expensive in comparison. Who will invest in fossil gas generation when ~20% of LNG exports have been taken offline for the next 3-5 years? https://www.lazard.com/media/eijnqja3/lazards-lcoeplus-june-... (page 8) Strikes on Qatar's LNG Ras Laffan plant Will Reshape the Future of Fossil Gas - https://news.ycombinator.com/item?id=47484246 - March 2026 Fossil fuels are over, it's just how fast we get to "done." Enough sunlight falls on the Earth in 30-60 minutes to power humanity for a year. Solar PV and battery manufacturing continues to spool up, and year by year, more fossil generation is pushed out. California is routinely operating at 80% renewables, 90% low carbon generation during daylight hours as they work towards installing battery storage to replace their fossil generation (~52GW target by 2045), for example, while having plans for 10s of GWs of additional solar to come online over the next decade. https://app.electricitymaps.com/map/zone/US-CAL-CISO/live/fi... https://www.energy.ca.gov/data-reports/energy-almanac/califo... https://www.canarymedia.com/articles/solar/were-harvesting-t... | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
| ▲ | pepperoni_pizza 5 hours ago | parent | next [-] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
> This is a common rebuttal, but not grounded in reality. Even assuming ~20% capacity factor for "apples to apples" comparison to legacy thermal and nuclear, solar and batteries are the cheapest form of power to install. I looked it up because I was curious, according to Wikipedia average PV capacity factor is 25 % in USA, 10 % in the UK or Germany. Nuclear has 88 % capacity factor worldwide. Meaning to replace 1 GW of nuclear installed capacity you need 8.8 GW of PV installed capacity in Germany or 3.5 GW of PV installed capacity in US. Which might still be economically worth it, I don't know. But it is a number that surprised it. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| ▲ | cbmuser 5 hours ago | parent | prev | next [-] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
Compare the price and carbon density of the French electricity grid with that of California to understand why that rebuttal is justified. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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| ▲ | cucumber3732842 5 hours ago | parent | prev [-] | |||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
I didn't say they weren't cheap. I said you were being misleading. I'm not rebutting your thesis. I'm rebutting your defense of it. They're so cheap they get over-provisioned on purpose. Can you imagine some guy speci'ng switchgear and transmission lines for a coal or gas plant that can't handle the plant running full tilt? Yeah me either. But that's exactly how it's done for renewables because that's where the sweet spot of cost-benifit is. A dozen 10mw turbines might be fed through 100mw of transmission hardware. They can never produce their rated 120mw because liquid copper would happen if they did. But they were intentionally provisioned that way so that based on weather patterns and whatnot they'd be able to expect say 80mw a certain number of days per year. There are untold numbers of renewable installations out there that cannot supply their nameplate capacity to the grid in such a manner. | ||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||||
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