Back in the 20th century, in order to reconcile the need for affordability and reliability, electricity operators ran big, inflexible plants flat out to cover the minimum demand level, or “baseload”. This they supplemented with smaller, flexible “peaking” plants to match demand at all times. It worked well as long as those big baseload plants delivered the cheapest power. Three things have changed, however, and the concept of baseload is in effect dead.
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