Energy independence for the US (or any other country)

In summary, the best way for the US (or any other country) to generate 50% of its energy from renewable sources in the next 20 years would be through the use of photovoltaics in the US Southwest, with water->hydrogen as a storage medium for overnight and transportation purposes. Other potential options, such as solar power satellites and algae, are also being explored, but currently the high cost is preventing widespread deployment. However, investing in renewable energy would lead to energy independence, job creation, and overall economic benefits. Drilling for oil in northern Alaska is not a viable solution due to the limited supply and potential environmental impact.
  • #1
edpell
282
4
What is the best way for the US (or any other country) to generate 50% of its energy from renewable (or at least source that will last for 500 years) source in the next 20 years?

My personal favorite is PV in the US Southwest with water->hydrogen as a storage medium for over night and for transportation.

I am also a long time fan of solar power satellites but I think ground based is cheaper.

I think the factor that is stopping the deployment is that both of the above are expensive. And for a country that can not even balance it's budget investing trillions of dollars in the future seems unlikely.
 
Last edited:
Physics news on Phys.org
  • #2
edpell said:
What is the best way for the US (or any other country) to generate 50% of its energy from renewable (or at least source that will last for 500 years) source in the next 20 years?

My personal favorite is PV in the US Southwest with water->hydrogen as a storage medium for over night and for transportation.

I am also a long time fan of solar power satellites but I think ground based is cheaper.

I think the factor that is stopping the deployment is that both of the above are expensive. And for a country that can not even balance it's budget investing trillions of dollar in the future seems unlikely.

Currently, we are not investing in the future, we are borrowing from it.
 
  • #3
drankin said:
Currently, we are not investing in the future, we are borrowing from it.

Good point. So in order to get a new renewable energy system we will need to move to a net positive investment in the future. How much pain will there have to be for that to happen and what form will the pain take?
 
  • #4
Algae is probably our best hope
https://www.physicsforums.com/showthread.php?t=211274

Energy independence is worth [average over the long term] half a trillion dollars a year, or about 60% of our trade deficit, based on the cost and rate of importation of crude oil and other petro products. That is 10 million, $50K a year jobs. Currently, we might as well be burning that money. It is easy to justify a large effort to end our dependence on oil. Even an effort costing $5 trillion would pay back in about ten years.

For perspective: In the current economic crisis, we have lost something over 7 million jobs.
 
Last edited:
  • #5
Ivan Seeking said:
Algae is probably our best hope
https://www.physicsforums.com/showthread.php?t=211274

Energy independence is worth [average over the long term] half a trillion dollars a year, or about 60% of our trade deficit, based on the cost and rate of importation of crude oil and other petro products. That is 10 million, $50K a year jobs. Currently, we might as well be burning that money.

For perspective: In the current economic crisis, we have lost something over 7 million jobs.

Yes, I have been impressed by the gene engineering of Algaes it does seem hopeful in fact there is an upcoming conference on the topic in Walnut Creek California by the federal gene folks.

Thank God someone who understands the relation between energy independence and US jobs/standard of living.
 
  • #6
How much money would we save if we drilled for oil in northern Alaska? It has to be way cheaper than buying from the MEC.
(we won't be over our oil dependence any time soon)

I am a fan of the giant mirrors in the deserts and the geothermal steam energy plants. The Earth is going to be hot for a long time coming, and the sun will be there for also a very long time!
 
  • #7
edpell said:
Thank God someone who understands the relation between energy independence and US jobs/standard of living.

A bit of math makes it painfully clear. I can't think of a better reason for the political left and right to come together. One would think we could all agree on this one.
 
  • #8
MotoH said:
How much money would we save if we drilled for oil in northern Alaska? It has to be way cheaper than buying from the MEC.
(we won't be over our oil dependence any time soon)

The arctic oil supply would barely make a dent.

What is the MEC?
 
  • #9
Middle Eastern Coalition. I just call the oil countries the "MEC" because its easier, and they are the big nosed fellows in Battlefield 2 Project Reality.
 
  • #10
MotoH said:
How much money would we save if we drilled for oil in northern Alaska? It has to be way cheaper than buying from the MEC.
(we won't be over our oil dependence any time soon)

I am a fan of the giant mirrors in the deserts and the geothermal steam energy plants. The Earth is going to be hot for a long time coming, and the sun will be there for also a very long time!

I like the mirror idea also.

On the Alaskan oil it is my understanding that there is something like 180 days of oil supply there to be drilled. Not sure if this is 180 of oil usage or 180 days of total energy use (in which case it might be more like 365 days of oil use). But either way it is not enough to make much difference. That is why I am in favor of drilling Alaskan oil at a deletion rate of 2% so it will last for 50 years. At that rate of extraction there should be very little environmental impact. At that rate, each year, we will get 3.6 days of supply from Alaska.
 
  • #11
You can go the the algae thread linked for pages and pages of discussion, but one critical difference between algae, and other options like concentrated solar, is that algae produces a fuel that can be burned in regular diesels. Solar energy produces electricity, but no fuel. To use it for something like H2 production is prohibitively inefficient.

Algae might also be used to produce H2.
 
  • #12
edpell said:
What is the best way for the US (or any other country) to generate 50% of its energy from renewable (or at least source that will last for 500 years) source in the next 20 years?

My personal favorite is PV in the US Southwest with water->hydrogen as a storage medium for over night and for transportation.

I am also a long time fan of solar power satellites but I think ground based is cheaper.

I think the factor that is stopping the deployment is that both of the above are expensive. And for a country that can not even balance it's budget investing trillions of dollars in the future seems unlikely.

I'm sorry to say solar is just a good publicity form of power generation. Take Cal-ISO (California's largest electrical supplier). They have an average baseline load of 30000-31000 MW in the off season and 37000-38000 MW during the peak session. Also being able to supply a 45000 MW peak load.

The largest Solar generation field that I could find (Olmedilla Photovoltaic Park) only produces 60 MW and has a Capacity Factor of 0.16. I wasn't able to find out it's exact size but a smaller park (46 MW) using similar panels uses up 618 acres of land.

The Nellis Solar Power Plant project in the USA is the most efficient with a CF of 0.24 and producing 14.02 MW. It is using 140 acres of land.

From this point my simple math calculations were done using the size of the Nellis Solar Power Plant project and its numbers.

To provide the peak load to Cal-ISO would require about 450 kilo acres of land or about half of Rhode Island

The USA averaged 783 GW for a baseline load in 2008. Only 411 MW coming from solar systems. To get to that needed power production you would need 7.8 mega acres of land or about the size of Maryland.

Renewablies can not supply the needed power to run heavy industry. Switching over wind/solar will make this nation turn into a service economy. I still firmly believe that nuclear power is the way to produce safe, clean, and practical infinite power.
 
  • #13
edpell said:
What is the best way for the US (or any other country) to generate 50% of its energy from renewable (or at least source that will last for 500 years) source in the next 20 years?

My personal favorite is PV in the US Southwest with water->hydrogen as a storage medium for over night and for transportation.

I am also a long time fan of solar power satellites but I think ground based is cheaper.

I think the factor that is stopping the deployment is that both of the above are expensive. And for a country that can not even balance it's budget investing trillions of dollars in the future seems unlikely.
The only thing that could possibly meet your criteria at a resonable price is nuclear power.
 
  • #14
russ_watters said:
The only thing that could possibly meet your criteria at a resonable price is nuclear power.

Now, now Russ - it's not fair to go there.

Remember (refocus - deep breathing), it's perfectly fine and understandable for the Iranians to develop nuclear to satisfy their energy needs - even though they are an ideal solar candidate - but it's not good for us.

We have to develop alternative sources because it will create green jobs.

Let's also not mention that China and Russia are tapping every source they can get their energy seeking hands around.
 
  • #15
russ_watters said:
The only thing that could possibly meet your criteria at a resonable price is nuclear power.

"Only", is a very strong word. Why be so exclusive?

And let's be realistic, Our economic model of unrestrained growth is the problem. Building fourth generation nuclear plants is something I am in favor of, but to replace existing generation, not to maintain the growth curve.

PV is getting better and cheaper. Nanosolar is producing inexpensive, high voltage, thin film solar panels for commercial generation.

The problem with the mirrors is that they build them in the desert where there is no water.

Another great idea is to make carbon based fertilizer from coal plant exhaust. This way we can replace the carbon that has been depleted from the soil by industial farming.

And there is nothing wrong with putting Americans to work in green jobs. In fact, it is preferable to the alternatives.
 
  • #16
Skyhunter said:
"Only", is a very strong word. Why be so exclusive?
Because I'm assuming the OP isn't asking about fantasy or science fiction. If we want to discuss what can be done, nuclear power is the only possible solution that can do what the OP asks at a reasonable price (and that's generous: it may actually just plain be impossible any other way).
PV is getting better and cheaper. Nanosolar is producing inexpensive, high voltage, thin film solar panels for commercial generation.

The problem with the mirrors is that they build them in the desert where there is no water.

Another great idea is to make carbon based fertilizer from coal plant exhaust. This way we can replace the carbon that has been depleted from the soil by industial farming.
All of those are hypotheticals. They have not been proven to be viable yet. Nuclear has. Why bet our future on maybes when we have a can available?
And there is nothing wrong with putting Americans to work in green jobs. In fact, it is preferable to the alternatives.
I absolutely agree that green jobs are a good idea. So we should start immediately on hundreds of new nuclear plants. That would create hundreds of thousands of new green jobs.

And, I might add, with the heavy push right now for electric cars, a resurgence of nuclear power is becoming more important.
 
  • #17
russ_watters said:
The only thing that could possibly meet your criteria at a resonable price is nuclear power.

I could live with nuclear but every time I look at the world supply of uranium it seems about as short lived as oil. We have discussed this in a thread within the last two months. I do not remember the exact numbers. How long do you calculate the world uranium supply will last?
 
  • #18
Argentum Vulpes said:
The USA averaged 783 GW for a baseline load in 2008. Only 411 MW coming from solar systems. To get to that needed power production you would need 7.8 mega acres of land or about the size of Maryland.

I do not see this a a show stopper. Let's use Nevada.
 
  • #19
edpell said:
I could live with nuclear but every time I look at the world supply of uranium it seems about as short lived as oil. We have discussed this in a thread within the last two months. I do not remember the exact numbers. How long do you calculate the world uranium supply will last?

The world supply of Uranium will last till the sun burns out, or a bit longer. Right now the large suppliers are Canada from about 5 mines. The stuff they pull out of the ground is almost at the point of enrichment that it can be stuck straight into the ground. Australia has a very large reserve of uranium but current economic and the political environment have them only operating two mines. The USA has several very large deposits of low grade uranium ore that is relative untouched because of cost. Also sea water has 3.3 ppb of uranium in it. Taking into account the massive amount of sea water on the world the reserves in the oceans are limitless.

Also given the use of breeder reactors and Integrated fast reactors thorium can be brought into the fuel cycle. Plus full burn up of all transuranics in the core of a nuclear power plant will allow for 20 years of operation before refueling, uranium will be around for a long time.
 
  • #20
Argentum Vulpes said:
Also sea water has 3.3 ppb of uranium in it. Taking into account the massive amount of sea water on the world the reserves in the oceans are limitless.

What is the cost to extract uranium from sea water per kilogram of uranium?
 
  • #21
edpell said:
I do not see this a a show stopper. Let's use Nevada.

So let's turn a very large part of the American South west into the equivalent of a parking lot? Well actually I can see the requirements for land needing to be larger. Because the entire power generation system has been centralized to get power into homes in Main at 120 VAC 60 Hz the losses of power over the HT lines would be massive. Costs of power on the east coast would become ridiculously high. Work on the Eastern states would be shut down till sun rise over the solar fields. Of coruse a field could become even larger to provide enoughs slack power to put it into storage for overnight loads, and overcast days. Then there is the fact that the most advanced and efficient solar generation field is only producing power 87.6 days a year or 2102.4 hours

So turning Nevada, Arizona, New Mexico, and Utah into a solar field is not only a show stopper but pure lunacy.
 
  • #22
edpell said:
What is the cost to extract uranium from sea water per kilogram of uranium?

About 120 US dollars per lb. Working out the numbers that is equivalent to burning oil at 3 US dollars per barrel. The biggest cost is the need for high temperatures and electrical costs. However the usage of a nuclear power plant will nip both of those technical problems in the bud, and drive prices down.

As a byproduct of uranium separation from sea water you could get fresh water, hydrogen gas, and the necessary chemicals to produce fertilizers. Just think turning a very large swatch of the African desert into productive farmland.
 
Last edited by a moderator:
  • #23
russ_watters said:
Because I'm assuming the OP isn't asking about fantasy or science fiction. If we want to discuss what can be done, nuclear power is the only possible solution that can do what the OP asks at a reasonable price (and that's generous: it may actually just plain be impossible any other way). All of those are hypotheticals. They have not been proven to be viable yet. Nuclear has. Why bet our future on maybes when we have a can available? I absolutely agree that green jobs are a good idea. So we should start immediately on hundreds of new nuclear plants. That would create hundreds of thousands of new green jobs.

And, I might add, with the heavy push right now for electric cars, a resurgence of nuclear power is becoming more important.

That is your opinion and you are entitled to it.

I personally think it is a bit absolutist, but then that is just my opinion. Let's not derail the thread.

Uranium is a limited resource. The nuclear plants of the future should be designed to burn the accumulated waste from older plants.

The Nanosolar started serial production of high efficiency, low cost thin film panels last year. They have two factories, one in San Jose and one in Germany. The one in Germany has a 640MW per year capacity.

Here is the http://www.nanosolar.com/sites/default/files/NanosolarCellWhitePaper.pdf" [Broken]

A multi-faceted approach is IMO a better strategy.
 
Last edited by a moderator:
  • #24
Argentum Vulpes said:
About 120 US dollars per tonn. Working out the numbers that is equivalent to burning oil at 3 US dollars per barrel.

The current spot price for U_3O_8 is $98 per kilo in New York. How do you get your cost of $120 per kilo? Is it from a reference? Did you do the calculation your self? If so, can you please share the details. 3ppb is a lot of water and salt to sift through.
 
  • #25
Skyhunter said:
The one in Germany has a 640MW per year capacity.

It will be interesting to see who invest in solar (who buys).

The future belongs to those who invest in it.
 
  • #26
edpell said:
The current spot price for U_3O_8 is $98 per kilo in New York. How do you get your cost of $120 per kilo? Is it from a reference? Did you do the calculation your self? If so, can you please share the details. 3ppb is a lot of water and salt to sift through.

It was from research put out by The President's Committee Of Advisors On Science And Technology in 1999. The report was wanting the USA to get into the international effort to get uranium out of sea water. Also it should of been 120 US dollars per lb not tonn. I just pulled up my research and saw I made a mistake

I was going off two year old research I did for an op-ed piece. Looking back into it Japanese researchers have developed a new system that is basically a large braid of specially treated fabric that is anchored to the sea bed like sea weed. Or it is placed in floating cages. It absorbs not only uranium but other useful heavy metals. Cost according to the paper is 96 US dollars per lb.

I couldn't find the paper I got my 120 dollar lb number, the URL is no longer valid, most likely archived in the White houses archive. However I do have the report from the Japanese researchers. http://physics.harvard.edu/~wilson/energypmp/2009_Tamada.pdf" [Broken]
 
Last edited by a moderator:
  • #27
edpell said:
It will be interesting to see who invest in solar (who buys).

The future belongs to those who invest in it.

Some very big energy players are invested in Nanosolar.

AES and EDF are some of the biggest in the world.

A 2MW plant requires ~10 acres, and with the high voltage panels they could plug right into the municipal grid. The installation can be designed so as to allow for multiple uses of the ground below. crops that require partial shade could be grown in sunny dry areas efficiently, since the shade will help the soil retain it's moisture.
 
  • #28
Argentum Vulpes said:
About 120 US dollars per lb. Working out the numbers that is equivalent to burning oil at 3 US dollars per barrel.

With oil at 70 $/barrel what is stopping these folks from becoming rich? Or better yet you and I from becoming rich?
 
  • #29
Skyhunter said:
Some very big energy players are invested in Nanosolar.

AES and EDF are some of the biggest in the world.

A 2MW plant requires ~10 acres, and with the high voltage panels they could plug right into the municipal grid. The installation can be designed so as to allow for multiple uses of the ground below. crops that require partial shade could be grown in sunny dry areas efficiently, since the shade will help the soil retain it's moisture.

I'm confused, has this company found a way to produce an AC solar panel? My understanding was all solar panels produce DC, so you still need some very beefy inverters on site.

Also what is the CF of one of these new panels?
 
  • #30
what does CF stand for?

To answer the question no. These are D.C. Yes, to drive an A.C. grid will require inverters.
 
  • #31
edpell said:
With oil at 70 $/barrel what is stopping these folks from becoming rich? Or better yet you and I from becoming rich?

Simple economics of supply and demand. There are 453 reactors world wide needing 65.5 kilotons of raw uranium to refuel. Current mine output is 51.6 kilotons of raw uranium. However not all plants need to be refueled each year and average time that one rod spends in a reactor is six years.

Large supply + microscopic demand = not a lot of money

Start flooding the market with new sources of uranium and the market will crash. Just like it did in the 1950.
 
  • #32
edpell said:
what does CF stand for?

To answer the question no. These are D.C. Yes, to drive an A.C. grid will require inverters.

CF stands for Capacity Factor. It is a measure of how efficient something is at generating power. It is determined by dividing actual output with maximum output.
 
  • #33
So it looks like any industrial process that consumer large amounts of energy should be powered by nuclear to save cost. Since it does not matter where in the world the manufacture is done how about we move all energy intensive production to say Chad and use nuclear?
 
  • #34
Argentum Vulpes said:
I'm confused, has this company found a way to produce an AC solar panel? My understanding was all solar panels produce DC, so you still need some very beefy inverters on site.

Also what is the CF of one of these new panels?

No. The higher current and voltage eliminates the need for the extra cabling to the inverter. Since the panels themselves can carry the current, to the inverter. I didn't mean to imply that you could just plug it into a wall socket.

16.4% active area, 15.3 total area. That somehow (not sure how it is calculated) equals panel efficiency of ~11%. That is according to the NREL tests.
 
  • #35
Skyhunter said:
No. The higher current and voltage eliminates the need for the extra cabling to the inverter. Since the panels themselves can carry the current, to the inverter. I didn't mean to imply that you could just plug it into a wall socket.

16.4% active area, 15.3 total area. That somehow (not sure how it is calculated) equals panel efficiency of ~11%. That is according to the NREL tests.

So these panels will be useless 89% of the time that they are out in operation. That looks like a colossal waste of resources, considering US nuclear power plants have a CF of 0.92.
 
<h2>1. What is energy independence?</h2><p>Energy independence refers to a country's ability to produce and use its own energy resources without relying on imports from other countries. This includes both renewable and non-renewable sources of energy.</p><h2>2. Why is energy independence important?</h2><p>Energy independence is important for several reasons. It reduces a country's dependence on foreign energy sources, which can be subject to price fluctuations and political instability. It also promotes national security and economic stability by reducing the risk of supply disruptions. Additionally, it can create jobs and stimulate the domestic economy by investing in and developing domestic energy resources.</p><h2>3. Is the US currently energy independent?</h2><p>No, the US is not currently energy independent. While it is one of the world's top producers of energy, it still relies on imports for a significant portion of its energy needs. In 2019, the US imported about 9% of its energy, primarily in the form of petroleum and natural gas.</p><h2>4. What steps can a country take to achieve energy independence?</h2><p>A country can achieve energy independence by diversifying its energy sources, investing in domestic energy production, and promoting energy efficiency. This may include developing renewable energy sources such as wind and solar power, as well as increasing domestic production of oil, natural gas, and coal. Additionally, implementing policies to reduce energy consumption and promote energy-efficient technologies can also contribute to achieving energy independence.</p><h2>5. Are there any challenges to achieving energy independence?</h2><p>Yes, there are several challenges to achieving energy independence. One challenge is the high cost of developing and implementing new energy technologies. Another challenge is the potential environmental impact of increased domestic energy production. Additionally, there may be political and economic barriers, as well as resistance from industries that rely on imported energy sources. It will require a coordinated effort and long-term commitment from government, businesses, and individuals to overcome these challenges and achieve energy independence.</p>

1. What is energy independence?

Energy independence refers to a country's ability to produce and use its own energy resources without relying on imports from other countries. This includes both renewable and non-renewable sources of energy.

2. Why is energy independence important?

Energy independence is important for several reasons. It reduces a country's dependence on foreign energy sources, which can be subject to price fluctuations and political instability. It also promotes national security and economic stability by reducing the risk of supply disruptions. Additionally, it can create jobs and stimulate the domestic economy by investing in and developing domestic energy resources.

3. Is the US currently energy independent?

No, the US is not currently energy independent. While it is one of the world's top producers of energy, it still relies on imports for a significant portion of its energy needs. In 2019, the US imported about 9% of its energy, primarily in the form of petroleum and natural gas.

4. What steps can a country take to achieve energy independence?

A country can achieve energy independence by diversifying its energy sources, investing in domestic energy production, and promoting energy efficiency. This may include developing renewable energy sources such as wind and solar power, as well as increasing domestic production of oil, natural gas, and coal. Additionally, implementing policies to reduce energy consumption and promote energy-efficient technologies can also contribute to achieving energy independence.

5. Are there any challenges to achieving energy independence?

Yes, there are several challenges to achieving energy independence. One challenge is the high cost of developing and implementing new energy technologies. Another challenge is the potential environmental impact of increased domestic energy production. Additionally, there may be political and economic barriers, as well as resistance from industries that rely on imported energy sources. It will require a coordinated effort and long-term commitment from government, businesses, and individuals to overcome these challenges and achieve energy independence.

Similar threads

Replies
8
Views
819
  • Mechanical Engineering
Replies
30
Views
2K
Replies
35
Views
5K
Replies
14
Views
2K
Replies
133
Views
24K
Replies
7
Views
2K
  • Biology and Chemistry Homework Help
Replies
2
Views
3K
  • General Discussion
2
Replies
57
Views
12K
  • Earth Sciences
Replies
7
Views
5K
  • General Engineering
Replies
8
Views
3K
Back
Top