The spark spread affects how much profit a power plant makes.
spark spread
idiomThe difference between the cost of the fuel required to produce a unit of electricity, and the price of that same unit of electricity.
When natural gas prices dropped, the spark spread improved and electricity became cheaper to produce.
Analysts watched the spark spread closely, knowing that even a small shift in fuel costs could determine whether the aging plant would operate at a profit or shut down for the season.
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bright spark
A person who is intelligent, clever or quick-witted.
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secretary spread
The apparent widening of the hips and buttocks, as seen when a voluptuous woman sits on a chair.
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spread one's legs
Synonym of put out (consent to having sex).
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spread one's wings
To experiment in life; to find out what one is capable of; to try new things or activities.
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spread oneself thin
To commit oneself to too many projects, so that there is little chance of completing them all satisfactorily.
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spread out
Become further apart.
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spread the word
To tell a lot of people; to inform as many people as one can.