The Energy Challenge – Wind Energy Bumps Into Power Grid’s Limits – Series – NYTimes.com
Wind advocates say that just two of the windiest states, North Dakota and South Dakota, could in principle generate half the nation’s electricity from turbines. But the way the national grid is configured, half the country would have to move to the Dakotas in order to use the power.
Video of a more-efficient Vertical Turbine Propeller that claims to be safer for birds.
Energy Department leaders say that, however understandable the local concerns, they are getting in the way. “Modernizing the electric infrastructure is an urgent national problem, and one we all share,” said Kevin M. Kolevar, assistant secretary for electricity delivery and energy reliability, in a speech last year.
Unlike answers to many of the nation’s energy problems, improvements to the grid would require no new technology. An Energy Department plan to source 20 percent of the nation’s electricity from wind calls for a high-voltage backbone spanning the country that would be similar to 2,100 miles of lines already operated by a company called American Electric Power.
The cost would be high, $60 billion or more, but in theory could be spread across many years and tens of millions of electrical customers. However, in most states, rules used by public service commissions to evaluate transmission investments discourage multistate projects of this sort. In some states with low electric rates, elected officials fear that new lines will simply export their cheap power and drive rates up.
Without a clear way of recovering the costs and earning a profit, and with little leadership on the issue from the federal government, no company or organization has offered to fight the political battles necessary to get such a transmission backbone built.
Texas and California have recently made some progress in building transmission lines for wind power, but nationally, the problem seems likely to get worse. Today, New York State has about 1,500 megawatts of wind capacity. A megawatt is an instantaneous measure of power. A large Wal-Mart draws about one megawatt. The state is planning for an additional 8,000 megawatts of capacity.
But those turbines will need to go in remote, windy areas that are far off the beaten path, electrically speaking, and it is not clear enough transmission capacity will be developed. Save for two underwater connections to Long Island, New York State has not built a major new power line in 20 years.
A handful of states like California that have set aggressive goals for renewable energy are being forced to deal with the issue, since the goals cannot be met without additional power lines.
But Bill Richardson, the governor of New Mexico and a former energy secretary under President Bill Clinton, contends that these piecemeal efforts are not enough to tap the nation’s potential for renewable energy.