GO
Loading...

Report Says Sun and Wind Power Could Threaten Nation’s Electrical Grid

null|By Matthew L. Wald, The New York Times
Monday, 10 Nov 2008 | 12:47 PM ET

Adding electricity from the wind and the sun could increase the frequency of blackouts and reduce the reliability of the nation’s electrical grid, an industry report says.

Winemaker Greg Allen walks between floating solar panels on a pond behind the Far Niente winery in Oakville, Calif. The winery is trying out a new approach in the volts-for-vines tradeoff, saving vineyard space by floating solar panels on a pond that recycles water left over from the winemaking process. (AP Photo/Eric Risberg)
Eric Risberg
Winemaker Greg Allen walks between floating solar panels on a pond behind the Far Niente winery in Oakville, Calif. The winery is trying out a new approach in the volts-for-vines tradeoff, saving vineyard space by floating solar panels on a pond that recycles water left over from the winemaking process. (AP Photo/Eric Risberg)

The North American Electric Reliability Corporation says in a report scheduled for release Monday that unless appropriate measures are taken to improve transmission of electricity, rules reducing carbon dioxide emissions by utilities could impair the reliability of the power grid. The corporation is the industry body authorized by the federal government to enforce reliability rules for the interlocking system of electrical power generation and transmission.

Such carbon-reduction rules are already in place in 27 states and four Canadian provinces, and new ones could be mandated nationally in both countries. They may force changes in the utility industry, the group said, including the shutting down of coal plants that are located near load centers, and substituting power from wind turbines or solar plants in remote areas.

These actions would impose new demands on a transmission system that was never designed for large power transfers over extremely long distances.

The group also said that the carbon emission rules could increase reliance on natural gas, making power generation vulnerable to supply interruptions.

Carbon emission initiatives are the “No. 1 emerging issue” for the grid, according to Rick Sergel, president and chief executive of the group, which is based in Princeton, N.J. Renewable energy can form a larger portion of electricity supplies without reducing reliability, Mr. Sergel said, but not without investments in transmission.

The overhauled electric system that has emerged in the last two decades already has inadequate transmission capacity, he said. Independent power producers have built generating stations that compete in a geographically vast marketplace to serve distant consumers. “The transmission system is being used closer to its limits more of the time than at any time in the past,” Mr. Sergel said.

The report was based on information from 50 utilities, power generators and other electric system participants. It quotes Kenneth W. Farmer, executive director of the Beauregard Electric Cooperative, of DeRidder, La., saying, “It appears that greenhouse gas issues and electric utility reliability are on a collision course.”

The report calls for construction of new power lines, which has become more difficult in some regions because of the diminished clout of utilities and the growing strength of preservationists trying to protect rural areas. Building new lines to reach distant areas with great potential for power generation will take a new approach to planning, the report said.

One solution, it said, might be greater use of “demand-side resources,” or deals with customers to cut consumption in periods of high energy use. In these arrangements, some retail customers agree to have equipment like central air-conditioners or swimming pool pumps controlled by utilities, which can limit their use at peak times. Some big customers, like factories, may voluntarily shut down on peak use days. Both groups get a discount or a regular payment in exchange for becoming “interruptible.”

Such measures can relieve pressure on generating stations and transmission lines, but require reliable integration with the transmission system, the report said.

Some experts say they think that imposing hard limits on carbon dioxide emissions could threaten the reliability of the power supply.

Peter Carney, an environmental engineer at the New York Independent System Operator, which runs the bulk power transmission system in New York, said that such problems could result from the Regional Greenhouse Gas Initiative, of which New York is a member. Under that agreement, utilities get allowances for carbon emissions. But under some conditions — a spike in demand because of severe weather, or the lengthy shutdown of a nuclear plant — the only way to obtain more power could be to burn more coal, increasing carbon emissions. It is not clear how such conflicts would be resolved.

Featured

  • Pump jacks and wells are seen in an oil field on the Monterey Shale formation where gas and oil extraction using hydraulic fracturing, or fracking, is on the verge of a boom, March 23, 2014 near McKittrick, California.

    Brent crude futures turned lower after Russia said top diplomats have agreed to take immediate steps toward calming tensions in Ukraine.

  • An employee wipes a TV screen in a shop in Moscow, on April 17, 2014, during the broadcast of President Vladimir Putin's televised question and answer session with the nation.

    Russian President Vladimir Putin warned of possible disruption to Europe's gas supply on Thursday, as the U.S. confirmed it would send additional military support to Ukraine.

  • A former BP employee will pay to settle allegations of insider-trading during the 2010 Deepwater Horizon oil spill.

  • Pro-Russian activists seized the main administration building in the eastern Ukrainian city of Donetsk.

    Deadly clashes in eastern Ukraine have spiked fears of all-out war in the region. So who are the armed, flag-waving rebels who appear to be behind it all?

Contact Energy

  • CNBC NEWSLETTERS

    Get the best of CNBC in your inbox

    › Learn More