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6

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, which are driven by the need for refueling and routine maintenance. Nuclear plants aren't load following, so other sources are needed From Wikipedia's article on ...


5

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 majority of store-bought BBQ fuels won't impart anything particularly bad into the food being cooked, the by-products (ash and partially-burnt coals) were never ...


4

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 required. Imagine that your house is in a steady state, using the same amount of power, with a steady mix of fuel being used to generate that power. When you ...


3

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 compost as well, so if that can't handle coal and charcoal ashes, maybe be wary of using it for your at-home pile. Incidentally, if you do want more information about ...


3

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 ignore those — because they will clearly self-terminate — and just look at the cryptos that don't require huge amounts of energy to exist, then we've got a more ...


2

"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 there as part of an environmentalist strategy, as explained in the 2014 paper "Buy Coal! A Case for Supply-Side Environmental Policy" by Bård Harstad. ...


2

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 more mineral content; silica ( sand), iron oxides, ( the pink or reddish color) aluminum oxides, some K and alkalinity ( eg. calcium oxide). Coal ash composition ...


2

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 time period. Typical coal plant in the U.S. From the monthly generator inventory I determined that in the U.S. the median utility and independent power producer (...


1

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 direction? You are correct, buying coal and trying to sink it into oceans is a bad idea. Your other idea, to leave coal in the ground as nature created it, ...


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