Green Energy at the Grass Roots, Living Off-the-Grid of Big Electric Utilities

By the Monitor's Board | The Christian Science Monitor, August 9, 2010 | Go to article overview
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Green Energy at the Grass Roots, Living Off-the-Grid of Big Electric Utilities


the Monitor's Board, The Christian Science Monitor


Public electric utilities will need thousands of miles of new transmission lines to bring solar and wind power to cities. One alternative could be microgrids, or local production of power from clean energy

An estimated 750,000 American households have chosen to live "off the grid," generating their own electricity through renewable sources. These are the greenest of energy pioneers in the campaign against global warming (for a related story, click here). But their choices also point to a larger issue in the drive to tap noncarbon energy sources: how can electricity from solar and wind best be delivered to consumers who decide to stay on the public utility grid?

Even with progress in renewable energies, the big electric utilities will be around for quite some time. And they will still need to rely on coal, oil, or gas, although perhaps in forms that emit fewer greenhouse gases. But the push for clean energy in many states and in Congress is also running into the need to build some 5,000 miles of transmission lines to carry electricity from the wind- rich Midwest and solar-intense Southwest to heavily populated areas.

This is no easy task. The obstacles could prove to be a bottleneck for the growth of renewables. The taking of land for new lines by governments, for example, could be as big an effort as the construction of the Interstate highway system. Another issue is the cost burden: should consumers pay for new electric lines or the companies that generate power from renewables?

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