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Here is an updated damage assessment of various vehicle technologies and fuel pathways using the latest version of GREET (GREET_2023 - https://greet.anl.gov/) depicted graphically. Used the same methodology as described in post #17.

That doesn't include the much higher upstream energy required by BEV. From the carculator results (full LCA); 2.545 MJ/km (BEV in Norway grid)/3.274 MJ/km (ICEV-d using 100% eDiesel made in Norway grid) = 0.777 - 1 = 0.222 or 22.2%. A 100% renewable electricity grid won't have any...

The ~70% less energy for BEV. It's actually more like 22% less in the case of diesel ICEV. Where the 70% figure coming from? Meanwhile, biomass-based diesel fuel has lower GHG emissions than BEV in the same scenario (Norway electric grid) in carculator also. Why do you believe IPCC on its...

That hydrogen ladder appears to lump all efuel into a single category. I've demonstrated in post #26 that epetrol is much more energy intensive to produce than ediesel. The reaction that takes place in the FT unit (which makes diesel, jet fuel and some naphtha) is highly exothermic. Thus not...

Where did you get >$10/gallon for ediesel? One of the links you posted in #35 ("Cradle-to-grave lifecycle analysis of U.S. light-duty vehicle-fuel pathways: a greenhouse gas emissions and economic assessment of current (2020) and future (2030-2035) technologies") has estimates the cost of...

This is efuel diesel, not petroleum-based diesel.

Broken down as follows: Chassis - 42 g/km (BEV); 41 g/km (ICEV-d) Powertrain - 10 g/km (BEV); 10 g/km (ICEV-d) Energy storage - 30 g/km (BEV); 1 g/km (ICEV-d) Fuel supply - 2 g/km (BEV); 8 g/km (ICEV-d) Maintenance - 9 g/km (BEV); 8 g/km (ICEV-d) End-of-life - 5 g/km (BEV); 4 g/km (ICEV-d)...

The grid used was the Norway grid which, in the carculator model, is 100% renewable electricity (mostly hydro and wind).

According to "carculator," a European LCA model (https://carculator.psi.ch/), synthetic gasoline has very high energy requirements, but synthetic diesel doesn't, at least if the Fischer-Tropsch (FT) method is used to make the eDiesel: "carculator" energy consumption @2025 @ Norway mix @midsize...

I don't understand that graphic. Why would efuels be any less "important" in that hierarchy that any other uses of H2?

Or use that excess capacity to produce hydrogen for synthetic fuels as you yourself suggested? This would be for synthetic ("efuels"), not biofuels ,but that would still be something used by ICEVs. We should at least be using organic wastes to produce biofuels. There's enough organic waste...

I don't see how that supports the idea that biofuels shouldn't be pursued or that the sale of new ICEVs should be abolished in 5 years. "...the total annual biomass that could be produced, which includes both current and potential biomass from forest and agriculture lands, as well as biomass...

Some more food for thought... “…Renewable liquid fuels – including renewable and biodiesel – displaced over 568 million gallons of diesel in 2018. Nearly 120 million gallons of diesel were displaced by renewable natural gas, and electricity – used to run hundreds of thousands of plug-in cars...

Controlled (prescribed) burns can't be safely completed if the fuel loadings are too high, thus substantial thinning is required before those burns can be done without the risk of the burn getting out of control. Up to 90% of the biomass needs to be removed before a prescribed burn can be...

Are there ANY pathways in which BEVs can even be carbon neutral over its entire lifecycle, much less carbon negative? There aren't in GREET, even with 100% renewable electricity. Is AGW a existential threat or isn't it?

So we're just going to proceed as usual and let those wildfires burn uncontrolled releasing not only massive amount of GHGs but criteria pollutants like PM2.5, which is being felt in much of the Eastern U.S. now?

Why aren't the folks who are concerned about cAGW at least as enthusiastic about biofuels as they are about BEV technology? BBD has the potential to be carbon negative if properly configured. https://velocys.com/2019/10/10/negative-emission-fuel-agreement/...

Then why is <1% of electricity generated in the U.S. from biomass (0.3% according to GREET model)?

There's a HUGE supply of waste forest material that's not only potentially available, there's a desperate need for a market for it. The main issue with massive wildfires is the massive fuel loadings in many forest lands in the U.S. If these lands were better managed and excess vegetation used...

I agree, but there's a LOT of waste material that COULD be used for BBD feedstock.