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6 votes
Accepted

Why aren't all nuclear plants running at their full installed power to decrease emissions?

TL;dr -- it's most economical to operate nuclear plants at a fixed output level, so other fuels are used to adjust for variations in demand. Nuclear output at any given time is limited by outages, ...
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5 votes
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Impact of ash from barbecue on compost heap

The problem with store-bought BBQ fuel is that they often add binders, accelerants and other things to the basic fuel in order to make it easier to manufacture/shape/pack/light/burn. Whilst the vast ...
  • 2,754
4 votes
Accepted

What is marginal energy?

What is marginal energy, or fuel on the margin? Fuel on the margin, when talking about the electric grid, refers to which fuel will be used to generate the next additional kilowatt of power that is ...
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3 votes

Impact of ash from barbecue on compost heap

I'm not sure of the science behind it, but I know that my local compost collector is fine with accepting fireplace ashes, but has a ban on coal and charcoal ashes. They use heat-treating on the ...
3 votes

Are crypto currencies sustainable?

The cryptos that require large/increasing/exponential amount of processing power/electricity to function are not sustainable according to the (resource-related) meaning of the word. If, however, we ...
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2 votes

What do we do with all the coal mines?

Abandoned underground coal mines present a potential hazard to anyone who might enter them. The first hazard is fugitive methane gas and the second is coal dust. Under the right conditions, both can ...
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2 votes
Accepted

Shortcut carbon emission trading by buying and sinking coal

"Obviously, it would be most ecologic to leave the coal where it is. But since this does not happen..." Actually, there are some who would like to buy the coal in the ground and leave it ...
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2 votes

Impact of ash from barbecue on compost heap

Do you mean charcoal ash from a BBQ or coal ash ? Wood ash will add K which is very beneficial and some alkalinity , likely good as decaying organics in compost are acidic. Coal ash will have much ...
2 votes
Accepted

Does a short-term shut down of a coal plant cause more CO2 emissions than keeping it running?

TL;DR: No -- due to the length of time it takes a coal plant to return to full output after shutting down, it will not produce more emissions during startup than a fully-loaded plant over the same ...
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1 vote

Shortcut carbon emission trading by buying and sinking coal

My question is, what good ways are there store/sink coal? Just sinking large quantities of coal in the oceans is probably be a bad idea, and can have disastrous side effects. So what is known in this ...
  • 3,227

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