NYISO doesn’t answer to Cuomo and building the infrastructure to move large amounts of solar or wind power across a state is an expensive endeavor which would require cooperation from the grid regulator.
The costs associated with constructing the kind of high voltage power lines needed to transport the power cost $1.9 to $3.1 million per mile built, and the “smart grid” technology said to be able to move wind and solar power can cost up to 50 percent more. A comparable network of transmission lines in Texas capable to move power from wind-rich West Texas eastward was projected to cost $6.8 billion when it began in 2008. The project still isn’t entirely finished.
The best places solar or wind power tend to be far away from the people who will consume power, according to the Department of Energy.
The technical issues associated with transporting wind or solar power across long distances pale in comparison to the technical issues involved with storing the power. In order for the power grid to function, demand for energy must exactly match supply. Power demand is relatively predictable and conventional power plans, like nuclear plants and natural gas, can adjust output accordingly. Solar and wind power, however, cannot be predicted or easily adjust output and the electricity they generate cannot be stored economically.
Additionally, the output of a solar or wind power plant is incredibly unreliable and generally doesn’t coincide with the times when power is most needed as peak electricity demand occurs in the evenings, when solar power is going offline. Adding power plants which only provide power at intermittent and unpredictable times makes the power grid more fragile and risks blackouts.