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2nd October 2023, 00:34 | #76 | ||||||
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| Re: How environment-friendly are EVs? Quote:
https://www.scania.com/group/en/home...ric-truck.html https://www.volvotrucks.com/en-en/ne...ady-today.html Quote:
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Another point. With current technology it is feasible to produce electricity for a BEV from roof top solar (many of us do so). When do you think such a green hydrogen facility will be possible ? Quote:
For all the non-energy applications of hydrogen that you quoted it will most likely have to be produced in situ so as to avoid the challenge of large scale transportation and storage. For example, a green steel company will have a hydrogen production facility which it will use directly for extracting steel. Anything else will not be feasible economically. Quote:
Last edited by electric_eel : 2nd October 2023 at 00:41. Reason: Typo | ||||||
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2nd October 2023, 01:49 | #77 | ||||
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| Re: How environment-friendly are EVs? Quote:
Tata has just launched FCEV bus with a decade old technology, from pictures I believe the H2 tanks are placed overhead on the entire length of the bus, with a 70kw fuel cell, that bus needs a huge battery, still I believe it cannot to more than 150-200km. Volvo is selling lot many BEV trucks compared to FCEV trucks. Electric buses are running in bangalore for over an year. Just few days back an independent test agency used a Tesla Semi for 1600kms in 24hrs, with just 3 charging sessions, BEVs already won the long haul. No trucking company will choose an FCEV simply because it currently costs 20 times per km compared to BEV(extrapolating from Mirai vs BEV). Quote:
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As others have explained, transportation of H2 is the biggest problem, there is a reason why H2(grey) is produced onsite at steel plants etc. How enormous the transportation problem? You need 16 tankers of H2 to service a refuelling station where a single tanker used to service for petrol. Why do you want to have all our cities having 1000s of H2 tankers running 24×7 servicing the H2 pumps. Last edited by SKC-auto : 2nd October 2023 at 01:56. | ||||
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2nd October 2023, 08:38 | #78 | |
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| Re: How environment-friendly are EVs? Quote:
1. Mining lithium - It was already being done before EVs as well our phones, laptops and other devices are powered by lithium batteries. Lithium is recyclable so the process can be cleaner when recycled lithium is used. Companies world wide are setting up circular processing for batteries 2. Battery production - Yes it is today a polluting process because the power used for production is not green power. Now let's compare the FCEV and EV, 1 kg of hydrogen can drive an FCEV for 100 km and requires 50 kwh to produce. So to drive 350 kms it will need 3.5 kg of hydrogen which will need 175 kwh of electricity. If I put the same 50 kwh of electricity in MG ZS EV, it would have driven 350 km and the left 125 kwh of electricity for upstream processes to use. I have not accounted for the fact that FCEV car will also have some size of lithium batteries to be used for storing regen based electric power. I am not saying FCEVs are not an valid option but they don't seem to be a better option as being portrayed by some specific manufacturers | |
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2nd October 2023, 14:15 | #79 |
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| Re: How environment-friendly are EVs? Couple of points (albeit disconnected) in response to the some of the above posts: 1. Power Requirement: There are over 320 million vehicles of different types operating in India. Even if you assume 30-40 watts per km for an e-bike, 130-150 watts per km for electric cars and probably 400-500 watts per km for electric buses and trucks, the additional annual energy required for all the vehicles presently on the road to be EVs would easily be in the 300-400 billion units per year (I really don’t have the full breakup of this 320 million yet so pardon the assumption – feel free to make your own). In FY 23, we produced 1617 billion units of electricity for the entire country, out of which wind/solar/biogas accounted for 201 billion units. I have excluded nuclear and river hydro as the capacity expansion in these areas will be negligible in future. https://pib.gov.in/PressReleaseIfram...x?PRID=1947380 See where this is going? And it’s not only EVs, but the de-carbonization of the entire nations consumption which is the goal – EVs are just one of the consumers of energy, but a big one. We will easily need to up the current installed capacity of 172 GW to 500 GW+ to have any meaningful renewable energy penetration. This is what I meant by 3x. It will probably be much more by 2035-2040. This goes back to my point on how hybrids could have been a worthwhile transitional technology while we wait for this to happen. 2. FCEV: I really don’t see what the opposition is about. Do we really think in 5-10 years India will have long haul trucks with 400-800 kw batteries and an entire network of tens of thousands of 500kwh+ charging stations to support them? Wishful thinking. And the production of green hydrogen is a self-sustaining ecosystem – I really do not see how some people are saying it’s like gasoline, really! FCEV’s have batteries you say? But only a fraction of the battery capacity of a regular EV. This is a technology worth exploring until EVs are able to cater to all vehicle types and all usages. A Bangalore or Mumbai EV bus doing 150 km/day may be okay being an electric, but fat chance our inter-state commercial transportation is. Most long-haul EV trucks are rated 250-350km WLTP. Nothing like a Tesla Semi (yet to be tested by real world owners) is coming to India in the next decade. Hypothetically, if you ran a Tesla Semi on India's grid, it would be responsible for 1000g+CO2/km, roughly the diesel equivalent of 2.6 kmpl or less. Lol. An FCEV truck fueled by green hydrogen (produced through a captive RE plant) would hypothetically be zero emissions, just like an EV charged at home through solar panels - so even assuming that an FCEV is not as energy efficient as an EV on a per km basis, from an emissions perspective it doesn't matter. For someone who has better use for an FCEV that EV, good for them. In any case, like I've been saying, the lifecycle raw material requirements and emissions is not as simple to compare as in some of the above posts. And the real world is more than a math problem. I don't think FCEVs are what we will ever use in our cars and bikes, but they will have their own place in industrial and commercial transportation in India, is what I feel. Last edited by Fiero : 2nd October 2023 at 14:44. |
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2nd October 2023, 15:59 | #80 |
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| Re: How environment-friendly are EVs? How FCEV trucks are not wishful thinking but EV trucks are wishful thinking? It is also wishful thinking Tata can deliver a long haul FCEV truck with decade old tech they have. You are not addressing the below problems, please give us proper reasons, not future wishful thinking. 1) Cost per km. 2) Transportation of H2 to fuel pump. Trucking is a business on small margins, and FCEV truck will never compete with BEV trucks on cost. We are not Toyota fanbois to accept H2 FCEV without proper reasons. Last edited by SKC-auto : 2nd October 2023 at 16:01. |
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2nd October 2023, 18:54 | #81 | |||||||
BHPian | Re: How environment-friendly are EVs? Quote:
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Like I said, the pollution for extra energy isn't the issue. The ability to produce that electricity itself is being questioned, then how can we say that going to H2 is feasible when the same type of vehicle with FCEV will take 3x more energy to travel same distance or conversely, the amount of H2 to power 1 million FCEVs can power 3 million BEVs. 10% FCEV sales = 30% EV sales in terms of energy needs to travel same distance on similar cars. Did you not think of the "baseload power requirement and grid upgradation, which in themselves require vast amounts of new tracts of land, hundreds of billions of dollars of new power projects, storage technology to stabilize the grid and what not" when hydrogen was the suggestion, and when the extra load is not even a slight increase for H2, rather, by a factor of three. Quote:
Mirai is not even the best selling FCEV, Hyundai Nexo is. Quote:
I wonder how profitable this bus will be vs EV bus. At least with EV bus, you recover the premium paid in the running and service cost. The running cost of H2 does not inspire confidence for the razor thin margings in public transit. I know because my dad is ARM at UPSRTC. Its bonkers someone thought H2 will be good for cost saving on already loss making business of city bus, nor does the reliability look good considering the points I mention below this : Quote:
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Also interesting, that exceedingly dusty environment which INDIA DOES NOT HAVE will mean that the Fuel cell will also outlast the IP67 rated, sealed shut batteries, oh wait. Kinda counterintuitive from point of using it in construction equipment no? And all this when there are already several thousand EVs all over the world which have very much exceeded their warranty life, continuing to work with minor range drop (<10%) over 200K km or more vs being banned on the road and refueling unless tank is replaced. How many 1 million mile Mirai's do we have, since Toyota themselves set the million mile benchmark with Hilux, LC and other reliable vehicles from their portfolio, how does the Mirai and other FCEVs match up to this legacy? Quote:
Where electric trucks can't go, load them up on the trains. Simple. Actually, you know what, might as well put pantograph on each of the wagons too, and let those electric trucks charge from the 25kV catenary. Not only did the trucks reach their destination quickly and efficiently, they're also fully charged for the last mile delivery when landing in Delhi from say, Mumbai. I know konkan is not electrified, but can work in other regions just fine with the massive electrification going on in IR at present (90%+) Last edited by Shresth_EV : 2nd October 2023 at 19:04. Reason: Quote fixes | |||||||
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2nd October 2023, 19:25 | #82 | ||
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| Re: How environment-friendly are EVs? Quote:
Yes, FCEV needs medical grade oxygen, which means replacing filters every few months in our dusty environment. I just don't understand who will choose a FCEV at 170₹/km( @ 36$/kg) or 70₹/km(@15$/kg) when you can get a BEV truck with 15₹/km or a diesel one at 35₹/km. Quote:
Last edited by SKC-auto : 2nd October 2023 at 19:33. | ||
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2nd October 2023, 20:02 | #83 | |||||
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| Re: How environment-friendly are EVs? Quote:
https://theicct.org/wp-content/uploa...s-us-apr23.pdf https://www.linkedin.com/pulse/fcevs...devdutt-singh/ (look at the links embedded within this) https://www.downtoearth.org.in/blog/...onundrum-86712 But how does additional cost (today) make them not worth pursuing? Over the past 15 years, the EV industry has pushed on (supported by governments) with the promise of better technology and cheaper batteries eventually making them price competitive with ICE on their own, because ultimately a consumer will not pay significantly more just for the sake of the environment. This has got us to where we are today where in many parts of the world the total cost of ownership of EVs can be lower than ICE. Interestingly though, just cost alone is not enough to convince everyone to buy only EVs, is it, even in countries littered with charging infra everywhere. We are still getting there. In India, no Nexon, no ZS EV will sell without the tax breaks they get (i.e. only 5% GST and minimal road tax), on the price parameter itself, forget range anxiety. Now that EVs are coming of age, is the argument suddenly that the same benefit of subsidies and 10-15 years of incentivized advancement should not be given to FCEV technology because EV warriors have declared that BEV is the best and only possible technology to be used for transportation (this includes cars, LCVs, HCVs, tractors, cranes, even locomotives and aircraft perhaps)? Weren't EVs a joke 15 years ago, but we are here, right? The price argument is a bit unreasonable to me. I don't know much about the logistics to really know why people think its such an insurmountable challenge to overcome H2 transportation, in comparison with a total complete overhaul of the nation's grid, multiplying our power generation capacity and what not. I would assume that if the government is expecting a few lakh crore in investment in green hydrogen and has itself earmarked twenty-thousand crore in subsidies (please see the Green Hydrogen Mission and related news), they have the transportation bits figured out? Again I say, the primary purpose of H2 is not transportation - we anyways need this industry. Quote:
Now coming to your point "limited power which could've gone to the houses of poor rather than rich man's EQS" - you are absolutely right, but only theoretically. If only all the wealth in the world could be more equitably utilized, right? However, all the billions of private capital currently earmarked for development of green hydrogen plants and corresponding renewable energy plants (to feed the green hydrogen plants) would very possibly not be available merely for development of more renewable energy plants alone, for the poor man or for the EVs. We cannot direct private capital to go where we want it. Business decides. You cannot, for example, go to JICA and say, kind sirs, instead of giving us a low interest loan of twenty-thousand crore rupees to build the Mumbai-Ahmedabad bullet train, we will use the money to upgrade other train infrastructure to better serve some existing sectors since the money is better utilized that way - they will simply say no, go find your capital elsewhere. Quote:
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Last edited by Fiero : 2nd October 2023 at 20:32. | |||||
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2nd October 2023, 21:01 | #84 | |||||
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| Re: How environment-friendly are EVs? Quote:
Yes, EVs were a joke 15years ago, but still they ran at 1₹/km, not 30₹/km, can be recharged at home, EV warriors know that the battery chemistry can be engineered and evolve over the years. H2 is an element and is a dead end, you can only make better fuel tanks, fuel cell, electrolysers. Already H2 is compressed to 10,000psi( tyres are 30-40psi) how much more you can compress. The only way to make a H2 vehicle to travel long distances is compress H2 at higher pressures or use more tanks. Quote:
The govt has announced 3 ports to ship hydrogen, from the scientists I follow on X(twitter) it is extremely stupid to ship H2 as a gas. You can say these scientists are also EV warriors, but they only follow science. Quote:
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Last edited by SKC-auto : 2nd October 2023 at 21:11. | |||||
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2nd October 2023, 22:10 | #85 | ||||||
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| Re: How environment-friendly are EVs? Quote:
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about 15 years ago and who the joke was played on. https://en.wikipedia.org/wiki/Who_Ki...lectric_Car%3F See also section on hydrogen Fuel cell cars. Many of us feel this is the same trick that is being played again. Because the companies and the people who bring in hydrogen for mobility seem to be the same crowd, oil and gas industry, who have no intention of producing green hydrogen (an expensive affair) but blue hydrogen (which is essentially grey hydrogen with enough spin called emission capture) always saying that it is a stop gap for eventual clean green hydrogen. Just to point out, yes we need green hydrogen for all the things you said and not for mobility. This green hydrogen needs to be produced in situ and used as quickly as possible to make the entire process efficient and not worry about transport and storage. Quote:
Complete overhaul of grid is not such a difficult thing which by the way we anyway have to do. All the technology exists. The expertise exists. Laying down large cables probably is simpler than building express ways. And most importantly, electricity is rather trivial to produce locally. Quote:
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May be oil companies are willing to invest in them, and I will not be surprised. They might earmark a portion of their advertisement/lobbying aka bribing budget any way to make a Technological demonstration green hydrogen fueling station. They have no real intention of producing green hydrogen in industrial scale. Also finally why do you think private players will not be interested in setting up charging infrastructure (in fact we already seen private players with very small pockets like Zeon doing extremely well) Quote:
1. Other than oil wells we have another source for methane. Waste treatment. We any way have to treat the waste and even untreated waste emits methane a gas that is much worse than C02 when it comes to green house effect. So something needs to be done for this emission. 2. Unlike hydrogen, local production is easy particularly in farming and agricultural setting. Bio gas plants simple and effective technology 3. Methane as a gas is much easier to handle than hydrogen and we already have CNG technology. 4. If we are to produce hydrogen we would any way be producing it from CNG (Blue hydrogen). Might as well use the CNG directly for fueling. Again, am I advocating CNG instead of EV ? No. but if we have some difficult to electrify sectors, there might be a not so clean option like CNG which needs to be offsetted by other means (better management of forests, grass lands better agricultural practices and waste management). | ||||||
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2nd October 2023, 22:19 | #86 | |||
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| Re: How environment-friendly are EVs? Quote:
I don't think I am digressing on anything. My previous posts (and the links I've posted) are clear that FCEVs will not be cost competitive with EVs in the forseeable future. However, my 2035 they will be cost competitive with diesel (and who knows even with EVs if we see a price drop in green hydrogen/fuel cells more than anticipated) and are for certain applications only. Quote:
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https://www.hydrogeninsight.com/poli...nt/2-1-1386618 https://www.belfercenter.org/sites/d...nTransport.pdf Some more useful links, recognizing the challenges in transportation, but nonetheless pushing through. The US government has said FCEV has significant long term potential in long haul applications. The Chinese government is set to invest US 17 billion in green hydrogen/FCEV this year. The number of fools running the world I tell you, despite the several tweets by the experts ! Last edited by Fiero : 2nd October 2023 at 22:22. | |||
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2nd October 2023, 22:43 | #87 | ||||
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| Re: How environment-friendly are EVs? Quote:
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Separately, found an interesting article on Hyundai's plans: https://www.wapcar.my/news/bev-vs-fc...re-wrong-33296 Last edited by Fiero : 2nd October 2023 at 23:13. | ||||
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2nd October 2023, 23:14 | #88 | |||||
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| Re: How environment-friendly are EVs? Quote:
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There is no perpetual energy generation, you need to always follow thermodynamic laws, "energy can neither be created or destroyed, but can only be converted from one form to another". Quote:
There are several thousands of BEV trucks sold today compared to few thousands of FCEV trucks, I am sure it is going to be a revelation for those H2 truck owners. Quote:
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Below is Chinese EV and FCEV truck sales. Last edited by SKC-auto : 2nd October 2023 at 23:21. | |||||
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2nd October 2023, 23:52 | #89 | |||||
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| Re: How environment-friendly are EVs? Quote:
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Anyways, no one is trying to claim FCEVs are BETTER than EVs or trying to compete for 50% market share, but will have their place. You may have whatever last word you want to have. The future is near. We will all know anyways whether the east or the west has the last laugh on this. Last edited by Fiero : 2nd October 2023 at 23:59. | |||||
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3rd October 2023, 00:45 | #90 | ||
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| Re: How environment-friendly are EVs?
Who would have guessed Nokia, Kodak, Blockbuster . Did we not hear Toyota saying H2 is the future for cars until recently, now you seem to disagree with Toyota and Hyundai, as you now believe FCEVs do not work for cars, is Toyota lied to you? Quote:
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Someone said on internet, "The price of flour(electricity) will always be lower than price of the Cake(H2)", no amount of engineering can change this fact. Last edited by SKC-auto : 3rd October 2023 at 00:52. | ||
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