Coal or Batubara

Coal or also known as Batubara in Indonesia has produce in many different site of Kalimantan Island in Indonesia and also allround the world.

Coal use for many big factory in all over the world, and there are so many different caloric value in coal it self GCV 5000, GCV 6100, GCV 6300 with different TM (Total Moisture) also, but most of the coal buyer or coal user always look for the same coal TS (Total Sulfur) which is has to be below 1%. Every GCV of the coal with different TM is use for different usage, from a big factory to a household usage.
You can find the different of the coal at Analisys Report.

For coal buyer and coal investor if you are interested in coal Indonesia you can contact me through my email coalsite@ymail.com

How important is coal in generating electricity?

Very important. More than half of the electricity in the country is generated using coal.

But most people have no idea where their electricity comes from or how it is made. We used to joke about people who thought that milk came from bottles, not cows. Well, electricity is like that today. Here is a story that makes the point: How important is coal in generating electricity?

Meet your old friend coal.

Ask somebody "How much coal do you burn?" You're likely to get an answer like this. "A silly question" they will say. "We don't burn coal in our house! People used to burn coal, but they don't anymore."Then you say "Well yes, that's true, but only because somebody burns it for you -- the electric company. Got lights? A fridge? Hot water, a washer, air conditioning? Telephone, TV, VCR, maybe even a computer?" Most likely they'll say "Of course, almost everybody has that stuff."

Now you have them. Just tell them:

Here's why. Almost all electricity is made by spinning a magnet, called a generator. Most generators are powered by high pressure steam blowing through a sort of fan, called a turbine. Coal has always been our primary source of the steam used to make electricity, for several reasons. First and foremost, coal is abundant. It is found all over the country and it is easy to get to. In many places it can be mined right from the surface. In other places the miners go underground to get it. Because coal is abundant and easy to get to, it is very cheap. It is also easy to transport and store, compared to other fuels.

If you look at the Power Generation Chart you can see how we have made our electricity over the last 25 years. Oil and gas also have been burned to make steam, especially gas. They compete with coal primarily in places where coal is not found locally where they become competitive. But in most places oil and gas are more expensive than coal, especially oil. New gas-burning steam power plants are being built today. In addition oil and gas are burned in internal combustion engines to drive electric generators.

Since the 1970s, nuclear energy has become an important source of steam to make electricity, and it is now our second largest source of power. However, nuclear power has become very expensive because of concerns over its safety, so no new plants are being built. Water power can also turn a turbine, without steam, and hydroelectric power plants have always been important. However, they can only be built in special places, and some people object to the dams they require, so no new hydro plants are being built.

We also use a tiny bit of solar power, wind power, geothermal power, and some other stuff. But not enough so far to even show up on the chart.

So it is mostly coal and gas that we depend on for new generating capacity.

"Well it all runs on coal, or mostly coal. Same for the stores, the malls, office buildings and factories -- they all run on electricity, which means they run on coal. True, we also use nuclear power, some gas and oil, even some good old-fashioned water power to make electricity, depending on the electric company. But mostly it's coal, coal and more coal -- one billion tons a year or more. Almost four tons a year for every one of us. Four tons! Even today."

But coal is at a crossroads. We depend on it today, and we desperately need to build more generating capacity. Should we burn more coal or do something else?

Some people say it is too dirty to burn any more and we should stop using it. Some say we can burn it cleaner and should do that. Some say we burn it clean enough now, a whole lot cleaner than we used too, clean enough. Then there is the issue of whether burning so much coal is affecting the earth's climate? And if so, how? There's lots of disagreement about that.

Some want more nuclear power plants instead, but others don't want any. Many people want to burn natural gas instead of coal, but the only extra gas is in places like Texas and Canada, a long way away and very expensive. Some say we should just use less electricity, but that is hard because it is so useful. What to do about coal is a very big question. One we all need to think about.

What about the effects of coal burning on climate?

First of all, the whole issue of climate change being due to human activity is, literally, up in the air. Scientists disagree, politicians disagree, and so does everybody else who has studied the issue. Second, most people think that if humans are having an effect on climate, it is to make the weather warmer. Whether this is good or bad is another big issue of controversy. So right off the bat there are no clear or simple answers regarding climate change or global warming. So there is also no clear, simple reason to do anything about it at this time. At this point it is just a big argument.

Where coal comes in is that one of the possible human drivers of climate change, if there is one, is carbon dioxide, or CO₂. The amount of CO₂ in the atmosphere seems to be increasing. Burning anything gives off a combination of water and CO₂, and burning coal is no exception. Since we burn a billion tons of coal a year in the United States, those people who are worried about climate change and global warming are worried about burning coal. They want us to cut back on coal burning or stop it altogether, to reduce the amount of CO₂ we put into the atmosphere of the earth.

On the side of coal burning, people point out three things. First and foremost, CO₂ is what plants eat. Almost all of every plant's body is derived from CO₂. In fact since all animals live on plants, or on animals that eat plants, life on earth depends on carbon dioxide.

CO₂ is the stuff of life, so how can CO₂ be bad? Some people even argue that since CO₂ is what plants eat, more of it will increase plant growth, helping to feed the growing human population. We don't want to cut back on CO₂ if it will cut back on people's food.

Second, our coal burning is just a tiny fraction of all the burning of stuff done by the 6 billion people on the planet; perhaps one quarter of one percent of the total. But since burning coal is where most of our cheap electricity comes from, it is very important to us. We should not give up this cheap electricity without a good reason.

Finally, all of the CO₂ put into the air each year by humans burning stuff, including gasoline, natural gas, wood and coal, is just a tiny fraction of the CO₂ that comes from other, "natural" sources. The earth is covered with plants and the sea is full of them. Many of these plants die each year, and when they do, they return much of their CO₂ to the atmosphere, where other plants can use it. So the coal we burn to make electricity is just a tiny fraction of a tiny fraction of the CO₂ that goes into the atmosphere.

But in fact when we burn fossil fuels we are returning to the atmosphere the CO₂ that plants sucked out of it millions of years ago, locking it up as the carbon in fossil fuels. Coal is nothing but the remains of the billions and billions of plants that covered the earth millions of years ago. Plants that were buried before they could return their life giving carbon dioxide to the atmosphere.