I've been doing some work looking into EV's again... though I'm not done yet, one of the outcomes of analysis is that there's virtually no net gain in GHG's reduction by shifting to EV's from Internal Combustion Engine (ICE) vehicles. Though this might be a bit surprising to you, the tradeoff is only in the form of energy consumed ...
There's a lot of media attention given lately to the Solar PV industry ... with most of the content related to how China's using gov't subsidies to allow their solar cell & panel mfg'ers to sell their goods at prices below production costs, overhead, & "normal" profits.
In the US & Europe, gov'...
I just revisted the economics of residential solar pv installations in our neck of the woods (latitude) in CA. Last time I did this was in 2008. I had just written up a long not with all the relevant details, but hit some button on my lap-top and lost it all. So all I'm going do now is give the bottom line....
Article Title:
Venture Capitalists Back Away from Clean Energy...
There are a lot of 'door' opening options to allow full head-room clearance to enter/exit vehicle. The main requirement is, that when doors are open there is no interference with another vehicle preceeding, behind, or adjacent with doors open when all vehicles are end to end in entrance/egress area's for the vehicles (parking ...
might think. I say this because if you ever been to Yokahama or downtown Singapore you've been in the underground city with wide, air conditioned underground passages stores, restaurants, etc. that link most parts of the central city together below ground and have direct passages or escalators or elevators to above ground shopping ...
There are several components to the savings to society (and individuals) obtained by a unified vehicle transport system of the kind I've previously outlined.
Just a couple of them for starters:
Vehicle Mass
...
To give you a better idea of the concept I've been proposing, here are some links to some views of it that have some of the features but not all in any one proposal shown.... these are all based on a dual mode transportation system concept, so miss most of the overall advantages in savings (energy, transportation cost outlays over time) ...
I was looking for the automobile industry standards for the relationship of automobile mass to fuel efficiency, and came across this 100 mpg, 750 lb, 4 passenger, 4 wheel vehicle ... which further substantiates my assertions that
- A 75 mpg average mileage for a currently mass
I don't know why it never ceases to amaze me that US foreign policy is as blind as a bat when it comes to sources of oil... but even though I've recognized this blindness for nearly as long as I recognized the US's dependance on oil --- somewhere along my university educational years, it still amazes me.
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Excellent article --- I think it nicely summarizes the realities, both scientifically and economically.
In short, I wouldn't be inclined to hold my breath looking for solar energy sources (or battery based EV's) to reach an economically competitive level with coal. It may happen..... eventually, but ...
Latest problem with Japan's tsunami related nuclear reactors will have
negative consequences for nuclear electrical energy expansion in US.
Read this as meaning COAL... aka C02 production will certainly now
increase by greater magnitude than the alternative use of nuclear
power plants would have created going forward in time.
...
negative consequences for nuclear electrical energy expansion in US.
Read this as meaning COAL... aka C02 production will certainly now
increase by greater magnitude than the alternative use of nuclear
power plants would have created going forward in time.
...
I've always wondered what the energy cost equivalents were for gas (therms) and elecrical (kWhrs) and since PG&E installed the wireless new meters at our place, AND our 1st gas bill since the installation went to triple it's ever prior high in the nearly 35 years we've lived here, I got even more curious.
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