What are you saying? we can't truly make solar with solar yet or maybe ever..

Right, what I am saying is even if we can manufacture solar panels using solar panels, we can't transport them or mine the material to make them without solar power..

we can't transport them or mine the material to make them without solar power..

I don't follow.

I am saying that if we can manufacture solar power with solar power, we would also have to mine the materials ect and transport them using solar power, or else your not truly using solar power. We can't get away from fossil fuels like one would think.

You seem to keep passing over nuclear.
The world is not going to be all solar for a long time, if ever.
Or are you looking at theoretical solutions to problems we might have thousands of years in the future?

The world is not going to be all solar for a long time, if ever.

DaveMart - the world *IS* Solar.

Coal, oil, wind, water - all expressions of energy from sol. (ok, ok. Wind also has a spinning globe effect.)

No matter what the source of energy, the energy conversion capital equipment must produce enough excess useful energy above consumption needs to be self-sustaining. Since fossil fuels are such high-quality sources with relatively cheap conversion capital (including refining and transport) they have been self-sustaining. The problem is they are not renewable, hence peak oil, etc. In order to expand energy production you need excess energy to mine, form, and construct the conversion capital (not to mention maintenance). These are the questions we need to answer about any proposed alternative energy production technology. Is the conversion capital self-sustaining, or does it need subsidization? If the latter, it probably isn't a good choice.

George

we would also have to mine the materials ect and transport them using solar power

electric vehicles charged from solar panels.

Where can I buy one of those?

The development of fossil fuel technologies in the 18th and 19th centuries was initiated through the use of biomass energy (a relatively inefficient form of solar energy) mostly in the form of food for workers and animals. With 21st century knowledge even more efficient solar energy utilization methods can be used to grow a solar based economy. Concentrated solar thermal can be used directly to melt metals and glass in order to make parts for more CSP systems.

We could eliminate the requirement for biomass consumption by downloading our conciousness-es into solar powered android bodies and giant orbital solar reflectors would beam sunshine down upon us 24 hrs a day. Our positronic brains would be much faster so we would need to learn Dolphin to speak to each other.

This technology is only 5 years away, perhaps 10.

I love it!!! Where do I sign up? Can our pets become androids too?

Experimenting with brain downloads is Educational and Entertaining.

It's EduTainment!

http://ieeexplore.ieee.org/xpl/freeabs_all.jsp?arnumber=4107853

http://www.mcon.org/

Learn Dolphin here

http://www.speakdolphin.com/

LOL @ the peace flag photo...

thomas deplume -

As you probably know, many here at TOD hold the view that we can't get from Here to There because we are presently dependent upon a dying technology, i.e., the burning of fossil fuels to produce useful work. They say that we can't go solar, wind, etc. in a big way because a significant amount of fossil fuel is required to create the infrastructure for such systems.

I say that this view is sorely off base. If one studies the history of technology, one sees that new technologies don't just suddenly snap into being like spring flowers. Rather, they are generally bootstrapped and gradually carried into being by the older technologies, of which they gradually displace.

Much horsepower (of the kind with hooves) had been used to bring the steam engine into being, and much fossil fuel technology was required to bring nuclear energy into being. One builds on the other, hopefully in not too wrenching of a way.

One of my favorite little examples of this sort of thing is that of the Japanese Zero fighter plane of WW II. The Japanese got into the aeronautics game quite late, but they were amazingly quick learners. Contrary to blatant racist views to the contrary, they had mastered the state of the art of aeronautical engineer and were good flyers. Their Zero fighter was developed a year or so prior to Pearl Harbor under great secrecy. At the time it was arguable the best fighter plane in the world. However, I read that when they took the first prototype Zero from its hanger to the test field, they had to tow it by horse-drawn wagons because trucks were in such short supply in Japan. So here we had 18th-Century technology helping to bring 20th-Century technolgy into being.

That's the way things usually work. As such, I think the best possible use of our dwindling fossil fuel reserves is to create a sustainable energy infrastructure. Sort of like towing a Zero fighter plane with a horse.

Much horsepower (of the kind with hooves) had been used to bring the steam engine into being, and much fossil fuel technology was required to bring nuclear energy into being.

True, but we had not hit "peak horse" or peak oil respectively at the times that those technologies emerged.

Exactly, and while what Joule says is theoretically possible, if the downside slope is too steep, or causes too much social unrest that the infrastructure can't be built, then what? I can easily imagine a scenario where the rich bunker off and continue to use oil the way we waste it today, not building that solar / wind / whatever energy infrastructure for the next generation. The majority of the planet could be left to fend for itself. Need some real world examples of that? Look at how poor nations that can only afford a little oil use it. IN many many countries, it is used by a very few rich and the army, while the vast majority of the population get none and live in poverty. This could very easily be the case. We need a plan B.