Hallquist: Legislators need deeper understanding of renewable energy credits

As CEO of Vermont Electric Cooperative, I am concerned that the Vermont Legislature is heading down a road to create mandates for renewable power adoption without understanding the physics of the power grid and while ignoring the market realities.

Those who understand the operation of the electric grid know that high levels of intermittent resources, such as wind and solar, have serious negative impacts in terms of reliability. The grid has been designed to use spinning generators that help to maintain stability. As generation increases or decreases rapidly, the inertia of these spinning generators helps to keep things stable. Wind-powered generators do not have that inertia. When the wind drops, the blades stop. Solar generators have no moving parts, so when a cloud passes, the generation stops immediately as well.

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