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Climate Change. How good is green energy?

Author : Kano

Submitted : 2018-01-11 07:04:31    Popularity:     

Tags: Change  Climate  good  energy  green  

http://www.powerlineblog.com/archives/20...

Answers:

Very good

I prefer red energy.

sin qua losa pao

Green Energy works well for me. I love the solar panels on my roof so much I am saving up the money from the lower electricity bills to invest in more panels.

I grew up in the next state over from Minnesota, South Dakota. Obviously Minnesota isn't going to do well with solar so it went with wind. It has lots of wind but when you run the energy costs to construct the wind mills and the additional electrical grid they require, I think you aren't really saving anything. Minnesota is right next to North Dakota as well which has very good supply of Natural Gas and oil so they certainly should have some cheap alternatives to coal. NG would be greener than windmills IMO.

As usual, the language has been used to (intentionally?) confuse the issue. People talk about wind and solar being "renewables" and therefore "green". However, not all green energy is renewable and there is more to renewable energy than wind and solar.

This gives greenies the opportunity to respond that renewables are good in some sense when you are arguing that wind is bad. Renewables can include wood chips, for instance. That produces more CO2 than coal for a given energy output - but it is OK because it is renewable!? Wood chips account for much of the renewable energy in the UK.

Claims are made that some places produce more energy from, say, wind turbines than they can use and call that a plus point. In reality, it just highlights the problem. Wind runs at about 20% to 25% efficiency. That means that you need to build four or five times as many turbines as you really need. When they all are actually working then you get more energy than you can use.

However, on a calm day the output still drops to zero. Giving the surplus away to a neighbour just highlights the fact that the energy cannot be stored. Storage is, currently, its Achilles heal.

More transmission lines is only a partial answer. The problem with electricity is that you can't just join the wires together to combine the outputs of several generators. As an analogy, imagine each cable is like an open channel aquaduct. All the channels are full and if you start adding water at one end of a channel it will start leaving the other. However, there is also a tidal wave effect. The wave travels all the way along the channel and can damage the remote end. It could even reflect back and damage the transmitting end.

Now imagine a few thousand such channels, one from each turbine, being sent over hundreds or thousands of miles and all being combined somewhere. Tidal waves will occur each time a turbine generator output changes. Imagine the resulting chaos at the remote junction.

At the moment, green energy is a bit of a toy. It works only because we still have other, more reliable, forms of energy. It is a bit like saying that your young child helped you paint the living room. OK, they did, but what sort of job would they have made without the parental back up?

The only "renewable" energy sources that work well are hydroelectric and nuclear. The environmentalists are opposed to both of them. Wind and solar do not provide enough energy to fuel our civilization, and are unreliable.

Green energy is awesome. We can have abundant green energy for literally as long as the Sun shines. And, whatever drawbacks they have is just a matter of improving the technology.

I would group green energy into three categories.

1. Nuclear power
2. Continuous renewable power. Examples include hydroelectric and geothermal energy.
3. Intermittent renewable power, such as solar, wind and tidal power.

Some fearmongers will tell you that nuclear power is dangerous. But, no one has died of radiation in a commercial nuclear power plant outside of former Soviet block nations. Nuclear waste is also considered by many to be a big problem, but it is also overrated. Some of the longest lived radioisotopes in nuclear "waste," such as U-233, Pu-239 and Pu-240 can be recovered from the waste and used as fuel.

Eventually, unless people can get fusion reactors to work, we will need to learn to live with intermittent renewable energy sources. But, while the Sun shines and the wind blows, we can charge batteries and/or make hydrogen.

Well California green energy is absolutely terrific for Arizona since California sometimes PAYS neighboring states to Use up some of its surplus green energy to prevent overloading the existing California infrastructure.
http://www.latimes.com/projects/la-fi-el...
we can no longer use The old saying "you cant beat free" because getting paid to use something definitely beats free.
Of course that expensive surplus green energy is not actually free since California state & U.S. Federal tax payers are paying through the nose for its production but all that ridiculous extravagant waste is for a good GREEN cause & it makes career politicians feel good about them selves so whether its practical or not is never a consideration.

Certain types of renewable energy are better some places than others, but there are these things--surprised you haven't heard of them, since you claim to have been a power engineer--called TRANSMISSION LINES. The power does not have to be created in Minnesota to be used there.

It's funny how you're always trying to run down renewable power, I guess it's because you made your living with just about the dirtiest power there is, coal power. The thing is, though, that even if renewable power has problems WE HAVE TO MAKE IT WORK. It is the only thing that is compatible with man's long-term existence and prosperity at present and future energy usage.

It doesn't matter how many fake arguments you use against it, it has to be made to work. Of course, I've heard from ACTUAL executives in the power industry that 100% renewable can be made to work today. How long ago did you retire, 20 or 30 years? You seem out of touch with your own industry.



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