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I know what the spot price is. My electric bill, however, has a fixed price 24/7. When the cost to deliver electricity varies significantly on an hourly basis, this is not an efficient way to match supply with demand.

Note how gasoline prices vary on a daily basis. This matches supply with demand.

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The large electricity consumers, though, all are on spot prices; and in many countries you also have some split for residental users (e.g. two prices, peak/offpeak, for particular hours in the day) - adoption for this is mostly slowed down by the need to replace all the electricity meters with "smart meters" that can do the variable accounting instead of simply tracking a running total consumption.

This is a topic I find really interesting, so I caught myself writing a whole essay about it. But I have to get back to work.

So let me just say that yes, you are right that gasoline prices better match price and demand.

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