Renewable energy’s mismatch with the grid

Phil Ebersole's Blog

Falling cost of photovoltaic cells. Chart via QIC.

The existing U.S. electrical grid can’t handle too much solar and wind energy.   They’re too variable.   They can’t be counted on when they’re needed most.

Until this changes, electric utilities will continue to rely on their aging fossil fuel and nuclear power plants as certain sources of power.

The problem, as Gretchen Bakke describes it in The Grid: the Fraying Wires Between Americans and Our Energy Future, is in the unique nature of electricity as a commodity.   It is the only commodity that has to be used as soon as it is produced.

The historic economic problem of electric power utilities is that they have to be able to supply as much electric power as their customers need at any point in time, but that most of the time this capacity goes unused.   This is especially acute in the USA…

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