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A Realistic Assessment of Renewables

LowDown

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A video that appeared on YouTube had one of the best assessments of renewable energy I've seen. The speaker claimed that he wanted to have a grown up conversation about the subject that included solid numbers. He went on to show that if we switched to renewables it would required dedicating about 30% of our land area to them in some form -- wind, solar, biomass, or what have you.

It was a nice contribution to the discussion, but he left out a couple of important points. One was the issue of reliability. How did he propose to solve the issue of how to get past days when the sun does not shine and the wind does not blow? The other was the cost of renewable energy, which remains about 10 times that of carbon fuel sourced energy if you count the government subsidy.

Think of the implications of energy that expensive. It's one thing to pay $1500 a month rather than $150 a month for electricity for your home, but when you start talking about powering industries and manufacturing with energy that costs that much then it becomes clear that this would represent a huge change in our lifestyle and overall prosperity. A lot of industries would simply no longer exist. Many of the goods and services that we take for granted would become too expensive.

It will, I think, be like going back to living like people did in the 1800s. Electronic devices like smart phones would be too expensive for most people to own. Transportation would be too expensive for any but the most pressing and special situations. Air conditioning would be a rare luxury. Personal transportation likewise, not even counting the cost of fuel. Food would become a much bigger part of our budgets. I imagine that anyone fortunate to own a plot of land will be tilling it themselves to grow as much of their own food as they can. It wouldn't hurt to have a few chickens and a cow, if possible.

The kinds of server farms used by companies like Facebook for social media would, I think, become unsustainable. Google and similar outfits would become a thing of the past. If the internet continues to exist at all it will be only for certain special purposes, like the old teletype machines and lines used to be used by financial institutions, newspapers, and few others.

It will be a much simpler life with less potential. It's pretty clear to me that people will not accept this change if they have any other options.
 
The Utopians fail to grasp reality.
 
He went on to show that if we switched to renewables it would required dedicating about 30% of our land area to them in some form -- wind, solar, biomass, or what have you.
Nonsense. Solar panels can go on the roof of a building that already isn't being used for ****. Windmills are mostly spread throughout the great planes where the wind is high and few people actually want to live anyway.

One was the issue of reliability. How did he propose to solve the issue of how to get past days when the sun does not shine and the wind does not blow?
There are these things called batteries. Maybe you have heard of them?

Think of the implications of energy that expensive.

It won't be. We're in the early stages of development. The first Computers took up entire rooms and were completely unaffordable for anyone besides a large corporation or a college. Today each of us has a cell phone that fits into the palm of our hands with 100 times the computing power of the earliest supercomputers. The same will be true of renewable energy production over time. Your cell phone screen itself will double as a solar panel, and your phone will charge in your pocket with each step you take.

We already have wireless energy transfer. In the future that will allow us to build entire solar-powered roads that can transfer power from many different sources directly into your car as it's driving down the road. Hell, I wouldn't be the least bit shocked if in the future we put solar panel farms in space that will be able to redirect the power down to us regardless of cloud cover.

Already many street lamps have solar panels on them, I wager to you in the future they will come equipped with miniature wind turbines. I've heard some really interesting developments in undersea hydropower that could use ocean currents to generate power while simultaneously providing needed habitation for sea life.
 
There are these things called batteries. Maybe you have heard of them?

As of now, we don't possess the battery-storage technology to store electricity longer than just a few days -- or weeks. The batteries used to store wind and solar power are large (in size) and as soon as they stop receiving energy - they begin to deplete. And, they're cost prohibitive today. There are better ways of storing energy, such as in elevated lakes, but even then, we're not ready to make a switch completely away from fossil fuel.
 
The Utopians fail to grasp reality.

Why do people like you even bother posting? Can you actually type an argument? Ever here of a paragraph? Christ almighty.

I should have known when I saw youtube clip it was going to be someone spreading falsities about renewables. We don't need 100% renewables. It isnt' an all or none thing. And technology is rapidly increasing like it always does and what we need today as far as space can be vastly different. In the future, these technologies will be far cheaper than the polluting and bloody resources we used now. Everything always starts out more expensive. Already there has been great leaps and bounds in solar energy where you don't need to be a millionaire to get solar and get off the grid

And better and better batteries are being invented and developed. Tesla has impressive batteries that can store solar energy for long periods of time.
 
Clean energy is expensive...and worth it. There should be a blend of systems used everywhere it is possible. We should stop demonizing fossil fuels. We should be taking a whole approach to energy.


Sent from my iPhone using Tapatalk
 
A video that appeared on YouTube had one of the best assessments of renewable energy I've seen. The speaker claimed that he wanted to have a grown up conversation about the subject that included solid numbers. He went on to show that if we switched to renewables it would required dedicating about 30% of our land area to them in some form -- wind, solar, biomass, or what have you.

It was a nice contribution to the discussion, but he left out a couple of important points. One was the issue of reliability. How did he propose to solve the issue of how to get past days when the sun does not shine and the wind does not blow? The other was the cost of renewable energy, which remains about 10 times that of carbon fuel sourced energy if you count the government subsidy.

Think of the implications of energy that expensive. It's one thing to pay $1500 a month rather than $150 a month for electricity for your home, but when you start talking about powering industries and manufacturing with energy that costs that much then it becomes clear that this would represent a huge change in our lifestyle and overall prosperity. A lot of industries would simply no longer exist. Many of the goods and services that we take for granted would become too expensive.

It will, I think, be like going back to living like people did in the 1800s. Electronic devices like smart phones would be too expensive for most people to own. Transportation would be too expensive for any but the most pressing and special situations. Air conditioning would be a rare luxury. Personal transportation likewise, not even counting the cost of fuel. Food would become a much bigger part of our budgets. I imagine that anyone fortunate to own a plot of land will be tilling it themselves to grow as much of their own food as they can. It wouldn't hurt to have a few chickens and a cow, if possible.

The kinds of server farms used by companies like Facebook for social media would, I think, become unsustainable. Google and similar outfits would become a thing of the past. If the internet continues to exist at all it will be only for certain special purposes, like the old teletype machines and lines used to be used by financial institutions, newspapers, and few others.

It will be a much simpler life with less potential. It's pretty clear to me that people will not accept this change if they have any other options.

It is working in many parts of the world and as a sign if others leading the way while we fall behind China is putting up solar arrays to the tune of a football field size array put up every day.
 
As of now, we don't possess the battery-storage technology to store electricity longer than just a few days -- or weeks.
First, "As of now."

Second, there is almost no place on earth that goes weeks without any sun or wind whatsoever. In the event of that possibility transferring power from other places is very doable.

we're not ready to make a switch completely away from fossil fuel.

We are not planning to make the switch tomorrow. The Paris agreement puts goals out there for 15-25 years down the road. Trump and most of the baby boomers that supported him will be gone the way of the dodo by then.
 
Solar panels produce electricity even on cloudy rain days. About the only time they don't is in darkness. As for storage of power batteries can and do last a week or more without loss of energy. Here in California we have wind farms in areas of the hills that nobody wants to live on. We also have geothermal and more.
 
Why do people like you even bother posting? Can you actually type an argument? Ever here of a paragraph? Christ almighty.

I should have known when I saw youtube clip it was going to be someone spreading falsities about renewables. We don't need 100% renewables. It isnt' an all or none thing. And technology is rapidly increasing like it always does and what we need today as far as space can be vastly different. In the future, these technologies will be far cheaper than the polluting and bloody resources we used now. Everything always starts out more expensive. Already there has been great leaps and bounds in solar energy where you don't need to be a millionaire to get solar and get off the grid

And better and better batteries are being invented and developed. Tesla has impressive batteries that can store solar energy for long periods of time.

I have argued over and over, but the hard headed Utopians simply cannot grasp the reality of out situation.

We will remain on fossil fuel for a long time still. Solar will be fast at progressing, but slow at implementation until we have viable storage solutions. Wind will be deployed more, and become graveyards of steel, as maintenance costs outweigh their benefit. Biofuels take away land for food, and al, these combined will make it too expensive for any nation to develop, if forced upon us.
 
It is working in many parts of the world and as a sign if others leading the way while we fall behind China is putting up solar arrays to the tune of a football field size array put up every day.

And overshadowing the world with pollution from their ever increasing coal power plants.

Are you part of the Chinese propaganda machine? Do they pay you to support their country?
 
Nonsense. Solar panels can go on the roof of a building that already isn't being used for ****. Windmills are mostly spread throughout the great planes where the wind is high and few people actually want to live anyway.


There are these things called batteries. Maybe you have heard of them?

Enough hand waving. How many batteries will be needed and what will they cost?


It won't be. W're in the early stages of development. The first Computers took up entire rooms and were completely unaffordable for anyone besides a large corporation or a college. Today each of us has a cell phone that fits into the palm of our hands with 100 times the computing power of the earliest supercomputers. The same will be true of renewable energy production over time. Your cell phone screen itself will double as a solar panel, and your phone will charge in your pocket with each step you take.

We already have wireless energy transfer. In the future that will allow us to build entire solar-powered roads that can transfer power from many different sources directly into your car as it's driving down the road. Hell, I wouldn't be the least bit shocked if in the future we put solar panel farms in space that will be able to redirect the power down to us regardless of cloud cover.

Already many street lamps have solar panels on them, I wager to you in the future they will come equipped with miniature wind turbines. I've heard some really interesting developments in undersea hydropower that could use ocean currents to generate power while simultaneously providing needed habitation for sea life.

More hand waving. And a lot of speculation about technological advances that may never happen.

If you'd like to amuse yourself sit down and figure out how big a lithium-poly battery (the most energy dense we have so far) would have to be to power New York City for a day, and figure out how much that would cost, and then figure out how much of the earth's lithium reserve that would take.

Here's what I got on that:

New York City consumes 11e9 W-h per day.
Li-poly batteries have 5e2 W-h per liter.
So a battery that is 2.1e7 liters in size is needed. Or, in other words, the size of 60 olympic sized swimming pools.
This would take 4e6 kg of lithium, and world reserves are estimated at 1.6e9 kg.
My guess on the cost is $ 3 billion, but the price has been falling.

Again, this is one city for one day.
 
Nonsense. Solar panels can go on the roof of a building that already isn't being used for ****.

You assume a roof is a roof is a roof. If everyone in the world was currently living in single family homes then sure, the solar panels needed to power everyone would go on existing roofs.... but then that is not the real world housing situation.

It is better to think of power usage per capita, and figure out how much acreage would be required. North America consumes anout 13,000 kWh per capita, which is the output of roughly 25 good solar pannels per person. Each solar panel is about 18 square feet.

the practical upshot is that if you were to cover every inch of every roof in the US with solar pannels you'd meet about 40% of the countries need, and that is assuming that the solar pannel industry could actually fill that demand...


Windmills are mostly spread throughout the great planes where the wind is high and few people actually want to live anyway.

And the soaring birds get chopped up....
 
A video that appeared on YouTube had one of the best assessments of renewable energy I've seen. The speaker claimed that he wanted to have a grown up conversation about the subject that included solid numbers. He went on to show that if we switched to renewables it would required dedicating about 30% of our land area to them in some form -- wind, solar, biomass, or what have you.

It was a nice contribution to the discussion, but he left out a couple of important points. One was the issue of reliability. How did he propose to solve the issue of how to get past days when the sun does not shine and the wind does not blow? The other was the cost of renewable energy, which remains about 10 times that of carbon fuel sourced energy if you count the government subsidy.

Think of the implications of energy that expensive. It's one thing to pay $1500 a month rather than $150 a month for electricity for your home, but when you start talking about powering industries and manufacturing with energy that costs that much then it becomes clear that this would represent a huge change in our lifestyle and overall prosperity. A lot of industries would simply no longer exist. Many of the goods and services that we take for granted would become too expensive.

It will, I think, be like going back to living like people did in the 1800s. Electronic devices like smart phones would be too expensive for most people to own. Transportation would be too expensive for any but the most pressing and special situations. Air conditioning would be a rare luxury. Personal transportation likewise, not even counting the cost of fuel. Food would become a much bigger part of our budgets. I imagine that anyone fortunate to own a plot of land will be tilling it themselves to grow as much of their own food as they can. It wouldn't hurt to have a few chickens and a cow, if possible.

The kinds of server farms used by companies like Facebook for social media would, I think, become unsustainable. Google and similar outfits would become a thing of the past. If the internet continues to exist at all it will be only for certain special purposes, like the old teletype machines and lines used to be used by financial institutions, newspapers, and few others.

It will be a much simpler life with less potential. It's pretty clear to me that people will not accept this change if they have any other options.

Do you remember when an HDTV cost about $2000 and now you can get even better ones for a few hundred? That will also happen to renewable energy as costs diminish.
 
The sun drives all energy generation in the solar system anyway

A video that appeared on YouTube had one of the best assessments of renewable energy I've seen. The speaker claimed that he wanted to have a grown up conversation about the subject that included solid numbers. He went on to show that if we switched to renewables it would required dedicating about 30% of our land area to them in some form -- wind, solar, biomass, or what have you.

It was a nice contribution to the discussion, but he left out a couple of important points. One was the issue of reliability. How did he propose to solve the issue of how to get past days when the sun does not shine and the wind does not blow? The other was the cost of renewable energy, which remains about 10 times that of carbon fuel sourced energy if you count the government subsidy.


There are several technological answers to the problem. The day we can control fusion to generate power is theoretically the most straightforward answer. But we're still working on methods & materials on that one. & it's always 50 years away.

The other possibility is building a Skyhook - basically an elevator into low Earth orbit - to ferry up materials & personnel.

Then putting solar collectors into orbit - it's always noon there, there's no loss of power due to atmosphere, water vapor, particulate matter, etc. (See https://en.wikipedia.org/wiki/Space-based_solar_power#Potential for an outline.) One of the advantages of space-based solar is that we can scale up to the limits of the technology. We could center solar farms on lunar orbit, for instance - for ease of using regolith to process into collectors, & a base of operations that can be hardened against radiation.

There's a lot of material science that has to come along in order for the Skyhook to be built. Building & networking space-based solar arrays is within current tech, but I'm sure we can improve the processes involved with investment. & if you can relocate the point of delivery for solar energy with a few clicks of a mouse, you get rid of the storage problem - you just redirect the power flow to wherever you want it.

You need the Skyhook to make the space-based solar economically feasible - or some other relatively cheap (operationally) method of getting serious payloads into space on a regular basis.
 
Do you remember when an HDTV cost about $2000 and now you can get even better ones for a few hundred? That will also happen to renewable energy as costs diminish.

But consumers were not being forced to buy those TV's and given a hefty subsidy to use it with. There were no government or ecowarriors mandate for people to be buying them.
 
But consumers were not being forced to buy those TV's and given a hefty subsidy to use it with. There were no government or ecowarriors mandate for people to be buying them.

No one is being forced to use renewable energy. When prices are close to competitive those who want to switch will do so.
 
It is working in many parts of the world and as a sign if others leading the way while we fall behind China is putting up solar arrays to the tune of a football field size array put up every day.

And their country's businesses will be the leaders of the world and bring lots of money and jobs to their country while dumb republicans resist building up our renewable energy resources because they have the **** of the oil companies firmed firmly down their throats
 
No one is being forced to use renewable energy. When prices are close to competitive those who want to switch will do so.

Why are you overlooking the governmental mandates that a certain percentage of solar and or wind power MUST be included in the power generation mix, which is a neat backdoor approach to forcing renewables onto rate payers, which is driving up cost.

From Forbes

Wind Energy Of No Use In The Pacific Northwest

Jan 18, 2014

James Conca

EXCERPT:

Having said that, Location! Location! Location! holds true as much for energy as for real estate. There is such a thing as the geographic component. It makes sense to develop more solar in the southwest than in Maine, to have hydroelectric plants on rivers, and to build wind in windy areas to replace coal generation and lower CO2 emissions.

Although this might be obvious on first blush, the concept of optimizing energy sources to physiographic regions really gets trashed when tax laws and State mandates bully their way into the mix (Earthtechling; Hydro Takes Dive For Wind).


LINK
 
Why are you overlooking the governmental mandates that a certain percentage of solar and or wind power MUST be included in the power generation mix, which is a neat backdoor approach to forcing renewables onto rate payers, which is driving up cost.

From Forbes

Wind Energy Of No Use In The Pacific Northwest

Jan 18, 2014

James Conca

EXCERPT:

Having said that, Location! Location! Location! holds true as much for energy as for real estate. There is such a thing as the geographic component. It makes sense to develop more solar in the southwest than in Maine, to have hydroelectric plants on rivers, and to build wind in windy areas to replace coal generation and lower CO2 emissions.

Although this might be obvious on first blush, the concept of optimizing energy sources to physiographic regions really gets trashed when tax laws and State mandates bully their way into the mix (Earthtechling; Hydro Takes Dive For Wind).


LINK

How about a link to those mandates?
 
Do you remember when an HDTV cost about $2000 and now you can get even better ones for a few hundred? That will also happen to renewable energy as costs diminish.

And all that was achieved without government interference, subsidies, tax breaks, etc.

We don't need subsidies, etc. for renewable energy to flourish. They will do better without government interference.
 
And all that was achieved without government interference, subsidies, tax breaks, etc.

We don't need subsidies, etc. for renewable energy to flourish. They will do better without government interference.

The BPA is increasing struggling to deal with the situation of excessive "renewable" power by shutting down Wind power when the Rivers are high, yet that makes ecowarriors unhappy about it.
 
So much nonsense, so little time....

Renewable energy costs have fallen dramatically over the years, and will continue to do so.

Renewable energy sources are growing as a share of generation. E.g. it's already providing close to 1/3 of the UK's power; in the US, it's gone from a low of 7.7% in 2001, to a high of 17% in 2017.

Storage options are improving. Liquid air shows a lot of promise, as it is zero-emission, doesn't degrade like batteries, and can be sited pretty much anywhere. There's also compressed air, flywheels, pumped hydro, pumped heat...

High emissions fossil fuels won't disappear overnight, but their use (especially coal) has fallen, and will continue to fall in the near future. A big driver of that is China and the EU, both of which recognize the environmental harm produced by those fuel sources. The increased use of renewables is well on its way, regardless of what the pessimists and/or deniers proclaim.
 
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