4 ms·

> The grid data you are looking at is about 1/5 of the real energy economy It's weird for somebody who says they want nuclear power to bring this up - have you

> The grid data you are looking at is about 1/5 of the real energy economy It's weird for somebody who says they want nuclear power to bring this up - have you been playing too much Fallout ? The two big non-electrical energy demands are transport and heating, which not only are being electrified already, they're also places where electrification is a net energy win, so that diesel or natural gas power translates into less than half as much electricity for the same results. For heat it just comes down to heat pumps, since we don't actually want to make more heat we can instead move the heat that already exists and avoid that high price, easy with electricity, impractical otherwise. But for transport it's even more fundamental, efficient fossil fuel power is about scale and regularity, but for transport you want tiny engines and bursty usage. A transition shrinks the overall energy budget while improving the outcomes, that's why this is such an obvious economic step. > Also why are you celebrating an increase in energy price? That's backwards logic. If the energy price had instead fallen to £60, you and every other consumer would be better off The vast majority of UK consumers do not have a wholesale tracked price for electricity, so in fact that lower immediate wholesale price is just profits for the retail electricity companies. Long term price trends matter more, but notice the CfD strike price for the new nuclear power station in the UK was a lot higher (IIRC) £92.50. If, of course, that station ever supplies actual power. So whether the headline price is £60 or £600, the price actually paid was £92.50 and somehow or another that's what you're paying for that electricity even if you were told it was £60. £92.50 isn't bad for a novel technology. If you were going to deploy it next year and in five years you'd be bidding £80 or less for another new plant I'd have enthusiasm for this concept. But in fact you're going to come back in five years, still without a finished plant but now pitching for £110 per MWh instead of £92.50 -- we have seen this story before.

skew-aberration 4mo ago
I've never played fallout, and this isn't a game for me. I do have an electrical engineering degree, have read dozens of textbooks on (renewable) power generation, thermodynamics and manufacturing, and have spent significant time helping a research group with simulations of solar hybridised biomass gasification (mostly for Fischer Tropsch biofuels). The scale of electrification is huge, make no mistake, and we'll be dependent on either nuclear or coal/gas for the next 50+ years. > The two big non-electrical energy demands are transport .. A large fraction of transport is not amenable to electrification in this manner; however transport is the low hanging fruit and I support the rapid electrification of transport where possible. Unlike batteries for cars, generation of biofuels/hydrogen for airplanes/ships/heavy trucks will not be significantly more efficient than fossil fuels - it likely will consume more energy, not less. The fossil fuel technologies are already very efficient (50%+) and renewable alternatives are very inefficient. It is possible to electrify/solarise these processes in the long term, but also complicated and capital intensive. I have worked on technoeconomic simulations of such processes, where I learned first-hand from expert researchers in this field (though I am not a chemical engineer). > .. and heating. For heat it just comes down to heat pumps This is not true at all, and you've likely misunderstood what heating means in energy breakdowns. Heat pumps are most suitable for low temperature heat - municipal heating, (industrial) cooking, etc. Things which are already largely electrified in developed countries. But low temperature heat is widely available as a downstream by-product of higher temperature processes (including power generation as in CHP), and it is there a low priority in the scheme of things. Heat pumps are not feasible (nor are they even theoretically very efficient) for high temperature industrial processes, of which there are a great many (concrete, bricks, metal processing, plastics and other chemical processing, etc). Many of these processes are already practically 100% efficient, so electrification will use at least the same amount of energy. A factory may use for example a steam turbine with a mere 5% electrical efficiency - the high temp steam is used to heat a chemical reactor, and the small electrical output is used for pumps, etc. Finally, the direct combustion of fuels, (often bundled under 'heating' in stats), also includes the use of fossil fuels as a chemical reagent, primarily carbothermal reduction of metals (plus many petrochemical processing reactions). This usage is highly efficient, and cannot be replaced with electricity directly. Alternative processes will likely consume more energy not less - there will be additional intermediate processes, separations, and so on, likely requiring melting/dissolving/reacting the materials at high temperatures.
- tialaramex 4mo ago
  > we'll be dependent on either nuclear or coal/gas for the next 50+ years. No. Things change. To understand how stupid this model of the world is you need some historical perspective In the UK for Q4 2000, twenty five year ago, there was 33.95TWh of electricity produced from coal power, Q4 2025 that was zero. All gone. In Q4 2000 wind and solar is making 0.25TWh, in Q4 2025 that was 30.72 TWh So in half the time you're thinking about, the change was so enormous that the largest electrical generation sector disappeared and a once insignificant alternative took their place. But OK, I can almost hear you, "Electricity is special". So lets look at another historical example to which I happen to have a connection. In 1954, the SS Shieldhall was built for Glasgow, her main job was to take (treated) sewage and dump it into the ocean although she'd also have transported passengers (usually at low cost) because hey, why not. Shieldhall is a triple expansion oil fired steam ship, at the time she was a reasonable though slightly dated, design. Some of the aspects of her that make her desirable as a working museum piece today were deliberate (like I said passengers weren't her primary purpose but the buyers knew they existed) because they look cool, but a ship optimized for purpose in 1954 wouldn't have been that different, we don't have any because the restoration team could only afford one and this one is cool. In 1985, so about 30 years later, Shieldhall was no longer economic and if not for a preservation trust which operates her today she'd have been scrapped and I wouldn't have mentioned her, but that's not fifty years it's just thirty and yet the entire notion of steamships went from "Obviously" to "This belongs in a museum" in that time. At sea all the short distance stuff will be electrified because it just makes too much economic sense. What counts as "short" will gradually creep up, there are several electric ferries doing 30-40 minute hops today, it would be silly to imagine nobody is offering say a Channel crossing with batteries by 2050. So then the question only comes up for the freighters. The crude carriers won't exist, if we're not digging up fossil fuels in order to burn them then they cease to be attractive for other purposes too, but both bulk carriers (e.g. moving cereals or ore) and container ships still make sense. The "luxury" cruise market also ceases to make sense though. For those bulk carriers with perishables aboard and for jet liners you would need synthetic fuel which will be expensive, but for everything else get used to going a lot slower to avoid needing fuel.
  - skew-aberration 4mo ago

skew-aberration 4mo ago

I've never played fallout, and this isn't a game for me. I do have an electrical engineering degree, have read dozens of textbooks on (renewable) power generation, thermodynamics and manufacturing, and have spent significant time helping a research group with simulations of solar hybridised biomass gasification (mostly for Fischer Tropsch biofuels). The scale of electrification is huge, make no mistake, and we'll be dependent on either nuclear or coal/gas for the next 50+ years. > The two big non-electrical energy demands are transport .. A large fraction of transport is not amenable to electrification in this manner; however transport is the low hanging fruit and I support the rapid electrification of transport where possible. Unlike batteries for cars, generation of biofuels/hydrogen for airplanes/ships/heavy trucks will not be significantly more efficient than fossil fuels - it likely will consume more energy, not less. The fossil fuel technologies are already very efficient (50%+) and renewable alternatives are very inefficient. It is possible to electrify/solarise these processes in the long term, but also complicated and capital intensive. I have worked on technoeconomic simulations of such processes, where I learned first-hand from expert researchers in this field (though I am not a chemical engineer). > .. and heating. For heat it just comes down to heat pumps This is not true at all, and you've likely misunderstood what heating means in energy breakdowns. Heat pumps are most suitable for low temperature heat - municipal heating, (industrial) cooking, etc. Things which are already largely electrified in developed countries. But low temperature heat is widely available as a downstream by-product of higher temperature processes (including power generation as in CHP), and it is there a low priority in the scheme of things. Heat pumps are not feasible (nor are they even theoretically very efficient) for high temperature industrial processes, of which there are a great many (concrete, bricks, metal processing, plastics and other chemical processing, etc). Many of these processes are already practically 100% efficient, so electrification will use at least the same amount of energy. A factory may use for example a steam turbine with a mere 5% electrical efficiency - the high temp steam is used to heat a chemical reactor, and the small electrical output is used for pumps, etc. Finally, the direct combustion of fuels, (often bundled under 'heating' in stats), also includes the use of fossil fuels as a chemical reagent, primarily carbothermal reduction of metals (plus many petrochemical processing reactions). This usage is highly efficient, and cannot be replaced with electricity directly. Alternative processes will likely consume more energy not less - there will be additional intermediate processes, separations, and so on, likely requiring melting/dissolving/reacting the materials at high temperatures.

tialaramex 4mo ago
> we'll be dependent on either nuclear or coal/gas for the next 50+ years. No. Things change. To understand how stupid this model of the world is you need some historical perspective In the UK for Q4 2000, twenty five year ago, there was 33.95TWh of electricity produced from coal power, Q4 2025 that was zero. All gone. In Q4 2000 wind and solar is making 0.25TWh, in Q4 2025 that was 30.72 TWh So in half the time you're thinking about, the change was so enormous that the largest electrical generation sector disappeared and a once insignificant alternative took their place. But OK, I can almost hear you, "Electricity is special". So lets look at another historical example to which I happen to have a connection. In 1954, the SS Shieldhall was built for Glasgow, her main job was to take (treated) sewage and dump it into the ocean although she'd also have transported passengers (usually at low cost) because hey, why not. Shieldhall is a triple expansion oil fired steam ship, at the time she was a reasonable though slightly dated, design. Some of the aspects of her that make her desirable as a working museum piece today were deliberate (like I said passengers weren't her primary purpose but the buyers knew they existed) because they look cool, but a ship optimized for purpose in 1954 wouldn't have been that different, we don't have any because the restoration team could only afford one and this one is cool. In 1985, so about 30 years later, Shieldhall was no longer economic and if not for a preservation trust which operates her today she'd have been scrapped and I wouldn't have mentioned her, but that's not fifty years it's just thirty and yet the entire notion of steamships went from "Obviously" to "This belongs in a museum" in that time. At sea all the short distance stuff will be electrified because it just makes too much economic sense. What counts as "short" will gradually creep up, there are several electric ferries doing 30-40 minute hops today, it would be silly to imagine nobody is offering say a Channel crossing with batteries by 2050. So then the question only comes up for the freighters. The crude carriers won't exist, if we're not digging up fossil fuels in order to burn them then they cease to be attractive for other purposes too, but both bulk carriers (e.g. moving cereals or ore) and container ships still make sense. The "luxury" cruise market also ceases to make sense though. For those bulk carriers with perishables aboard and for jet liners you would need synthetic fuel which will be expensive, but for everything else get used to going a lot slower to avoid needing fuel.
- skew-aberration 4mo ago