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A 50% efficient electrolyzer and a 50% efficient fuel cell makes a 25% efficient "battery", versus 90% for lithium ion.
The 27,500 pound figure for the 40 foot bus that can transport 60 people includes the battery weight. Think of four people per 5000 pound SUV, here you can seat 40 people which would be 10 SUVs totaling 50,000 pounds, 27,500 pounds seems light to me.
When the gasoline is made with biomass, you don't add to the fossil fuel carbon in the air.
The air part can capture a lot of braking energy, not so much with less than 1 kWh of batteries. Those batteries degrade in performance over time and use, not so with air/hydraulics. As long as the seals last, the device works the same as the first day.
When the Prius first came to the U.S. they worked hard to inform people the you did NOT have to plug it in. They went from 20,000 units per year to 200,000 units per year with a waiting list.
"Proterra introduced its all-new, fast-charge, 100% electric bus in 2014. The all-new, 40-foot bus expanded on the EcoRide’s industry-leading design and engineering and delivered a longer, lighter and more fuel-efficient bus. The second-generation bus measures 40-feet and weighs approximately 27,500 lbs., which is less than any other 40-foot transit bus on the market today."
The pneumatic/hydraulic combination is brilliant, I wish them all the best.
Zip car with wireless charging in the city could be a winner. People might just rent one for the fun of it. :)
As fuel consumption rises, we should supply that with bio synthetic renewable fuels. These are "drop in" replacements for the refined products, no modifications to the engines necessary and no "blend wall". This is SO obvious, it should not need repeating. People cling to the belief that electric trains and electric cars will save the day, when they will not. We need to go with solutions that will actually be done and work, otherwise it is all just wishing and hoping. We can not depend on wishes and hopes.
There are several renewable jet fuel companies, we probably will see more of them. We want to reduce carbon emissions from jet airliners in the future, this is one way of doing that.
We have not even produced 100 million barrels of oil per day worldwide, this says we will need to produce 138 million barrels of oil per day by 2040. From what I have read, that is not possible. I said years ago that we would hit peak oil but China and India would demand much more every year. This will tighten the market, drive up prices and create shortages. We can either do something to mitigate this, or continue creating oil wars...our choice.
Altair Nano used to make the batteries for those buses, I wonder what happened?
SHOULD is the operative word, it isn't and it won't. Ever since California Prop 13 in 1978 limited property tax, the Reagan revolution said taxes are evil. Every one wants stuff, but no one wants to pay for anything.
$100 billion for high speed rail in California where funding is not established and counties having major bond issues for light rail are reasons electrification will not happen. NG/CNG for trucks and buses IS a way to go, that will help. There is NO "surplus" shale oil nor biofuel, the supposed blend wall is a myth once we get enough E85 pumps. Oil companies have been discouraging dealers from installing them, that is anti trust which WILL be prosecuted.
We need more cellulose biofuels, more FFVs and more E85 pumps. This is a 10% solution, not a 0.1% solution.
Nice idea, if they can keep the price down on a diesel with BAS+ I wish them well.
Make the Cruze diesel a hybrid and get the best of all.
Mike Greenfield has more than 80 percent of his corn residue contracted to DuPont for use in the company’s cellulosic ethanol plant. If he had his way, all of it would be heading toward the plant in Nevada.
You still are not factoring in battery costs when quick charging over the period of time you are suppose to be saving $20,000.
Harvey, You are a dreamer, if no one wans to pay for it, it will never be done...period. It does not matter what "could" be done.
"Cotton—one of India’s major commercial crops..." Some would say they should grow food not cotton, but people like clothing. They could grow food then use the stalks to make fuel. Cellosic biomass ethanol reduces CO and NOX.
"land productivities up to 100X those of biomass-based approaches." Cellulose biomass can produce 1000 gallons per acre per year. If they are saying they can do 100,000 gallons per acre per year, I would like to see the evidence.
"This is enough to power about 70,000 American homes for a year." They are producing biogas for their own use, but not to heat homes. They product biogas to get lower carbon scores and better RIN ratings. The 70,000 homes is a figure of merit, they are not powering homes.
POET is not producing biogas, they are producing cellulose ethanol and cogenerating to use the waste heat.