Lots of fuels (like petrol) are a lot more energy dense than out best batteries. If we can synthesize fuels like that just using electricity as an energy source (that can be generated from renewables) then you have a carbon free dense store of energy that can be used to power a vehicle for a long distance without refueling.
The problem with these (fuel cells etc) is that the conversation rate is inefficient, wasting a lot of energy. As we are not using 100% renewable energy this means carbon is being released still.
If we had an entirely renewable energy grid (with oversupply when sunny/windy etc) then those energy losses would not matter.
Hypx@kbin.social 1 year ago
You avoid the giant, expensive battery though. People are obsessed with efficiency in a self-defeating way.
You999@sh.itjust.works 1 year ago
People are obsessed with efficiency because it’s the only metric that matters. We have a finite amount of resources on this planet and efficiency is the only way we can make it last. If you aren’t a ‘save the planet’ type of person then efficiency still matters because it’s directly correlated with cost.
Hypx@kbin.social 1 year ago
Better ban solar panels cause they're only 15-20% efficient...
You999@sh.itjust.works 1 year ago
You are comparing different efficiencies. Solar panels are 15% to 20% efficient at converting light into energy. As far as I’m aware every Efuel being developed (and every hydrocarbon fuel for that matter) has a 0% efficiency at converting light into energy but if I am mistaken please do correct me.