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Environment

Congress, Think Small: We Don't Need a National Supergrid, We Need Microgrids

By Kurt Yeager, AlterNet. Posted June 25, 2009.


Congress is fast-tracking legislation for a national grid that does little to improve energy efficiency or reliability.
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The agenda for Congress summer session is aggressive overloaded with health care, energy and spending legislation. The House of Representatives has promised it will pass both health care and energy bills this summer, putting California Congressman Henry Waxman in a bind. He plays a critical role in both debates, but time is short to develop the comprehensive energy bill necessary to accomplish myriad goals.

The House version of the American Clean Energy and Security Act is burdened with language that suggests the national backbone electricity transmission grid network, made popular thanks to Al Gore s and T. Boone Pickens robust publicity campaigns, is the tool that will deliver clean energy jobs, reduce global warning and establish energy independence for the U.S.

In reality, a backbone grid smart, dumb or otherwise will do little to address the troubles facing our ailing energy system. National grid advocates suggest that new transmission projects are the only way to move renewable energy like wind from the Great Plains and solar power from the sunny Southwest to locales with less access to renewable sources. But as electricity travels long distances, the system inherently becomes less efficient. The existing grid, which will serve as the foundation for a backbone grid, currently operates in the red: More than two-thirds of energy is lost before it ever reaches the customer.

Rather than fast-track legislation that is built on buzz and does little to improve energy efficiency or reliability, Congressman Waxman would be well-served to take a step back and consider some smaller ideas. He only has to look as far as his own backyard for examples of the innovation necessary to transform the energy system.

California utility companies, including Southern California Edison, San Diego Gas & Electric and the Sacramento Municipal Utility District, recently told the California Energy Commission that contrary to popular belief, smart meters are just part of California s smart grid projects. These major utilities are building smart microgrids, local distribution systems that work in concert with the larger bulk power grid, but are smart enough to rely on their own power sources during blackouts or when local power is more affordable. These community-scale (or smaller) systems generate power closer to the end-user and thus reduce waste. At the same time, these systems are built on smart technologies that allow communities to integrate renewable sources of energy that make sense for each location. This means solar in sunny areas and wind in windy areas, as well as energy storage systems that help every microgrid maintain affordability and reliability.

Waxman s counterparts in the Senate are taking a little more time to consider their version of the clean energy act. Some have wisely given more thought to the role of local distribution in creating an electricity system that will reduce greenhouse gas emissions, protect the environment and give energy consumers what they need: a reliable, affordable, efficient power supply. For example, Senator Debbie Stabenow of Michigan has expressed support for a Distributed Generation Carve-Out that would require utilities to include small-scale renewable resources such as solar in their energy portfolios an approach necessary for the U.S. to truly establish energy independence.

I expect that if Congressman Waxman and his colleagues take the time to consider a local approach to electricity distribution, they will find the means necessary to accomplish the Administration s lofty climate change and energy goals. The microgrid alternative to grid renewal will effectively rebuild our obsolete power system from the bottom up, investing in infrastructure projects that will maximize the benefit to consumers instead of bankrolling a broken system.

With Congressmen Waxman and Ed Markey s leadership, the House should slow down and legislate an energy plan that transforms the system. We need legislation that incentivizes innovation and entrepreneurship in ways that can create new clean energy jobs, protect the environment and provide American homes and businesses with reliable, clean energy. By paving the way for development of smart, green microgrids, we will succeed in building more than a smart grid; we will build a stronger economy and a healthier environment.

 


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See more stories tagged with: energy, supergrid, grid, smart grid, micogrid

Kurt Yeager is the executive director of the Galvin Electricity Initiative and the co-author of Perfect Power: How the Microgrid Revolution Will Unleash Cleaner, Greener, and More Abundant Energy. He lives in Palo Alto.

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I disagree, and several points
Posted by: rickiey on Jun 25, 2009 12:21 PM   
Current rating: 5    [1 = poor; 5 = excellent]
1. Two-thirds of electricity is lost before it makes it to the consumer? I don't know where you are getting your figures on that, but as an electrical expert, I'd like to see the basis for that number.

2. Yes, we need local power sources everywhere. Any home that can fit solar panels, SHOULD have solar panels. A national distribution system doesn't preclude that, in fact there are many homes that have a "negative electricity bill" every month, because they sell their excess to the power company (who is required to buy it).

3. We need a national grid for reliability. Local (smaller) generation systems, just like larger systems, must have some allotable downtime for both safety and maintainability reasons. The national grid can take up the slack to allow that downtime.

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needs more math
Posted by: x20090521@gmail.com on Jun 26, 2009 12:09 AM   
Current rating: Not yet rated    [1 = poor; 5 = excellent]
"The existing grid, which will serve as the foundation for a backbone grid, currently operates in the red: More than two-thirds of energy is lost before it ever reaches the customer."

That isn't what "in the red" means! "In the red" is an accounting term for negative numbers, when you lose more than you gain. But that factoid doesn't involve the electricity the grid is gaining. It just says the grid is trying to deliver some power, and managing to deliver less than half. You could say that

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» RE: needs more math Posted by: x20090521@gmail.com
Small is better
Posted by: MotherLodeBeth on Jun 26, 2009 12:08 PM   
Current rating: Not yet rated    [1 = poor; 5 = excellent]
One thing I love about solar is unlike the massive electrical power lines one sees stretching across communities that some believe cause health problems, solar on a home segregates the electrical power to the power storage section in the home.

And a small house society style community could have a separate building where excess power is stored that everyone in the small community can tap into. And with good planning a home can be designed so that natural light reduces the need for lights during the day, even during the day in southern areas of the country.

Floors can have heating coils that in winter can provide heat, and heat rises, which heats the whole room. And having insulated window coverings can hold heat in during the winter, and coolness in the summer.

Would like to hear more about how making these changes reduces the need for power plants and fewer power plants means less pollution.

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Distributed vs. Supergrid is a Political not a Scientific Matter
Posted by: mikesfb on Jun 28, 2009 2:42 PM   
Current rating: Not yet rated    [1 = poor; 5 = excellent]
The electric grid loses only about 7% of the electricity generated from power plants as currently configured. A nation wide supergrid with HVDC might lose about 15-20% if electricity is transported across country.

The 2/3rds number refers to the efficiency of the entire electrical system that starts from the theoretical total energy released from coal/natural gas/uranium and is mostly lost as heat at the power plant itself. If this same number were used for PV Solar panels on a roof, we would be looking at something like 80-90% loss of the potential energy of the sun. Solar thermal panels come out much better with only 10%-20% losses of the sun's energy.

I think it is harmful for advocates of distributed energy or detractors for that matter to misrepresent its benefits and its drawbacks. Central station renewable energy power plants are going to be key if we want to get out of the fossil fuel bind...we need a supergrid to use them to their full capacity. This doesn't downgrade the value of distributed renewable energy.

I think that distributed energy advocates are using the invention of PV panels (essentially they are mostly advocate PV) as an occasion to make a utopian "Small is Beautiful" view of the economy appear to be optimal. I am not so sold on the benefits of abandoning economies of scale and professional management of the electrical grid, especially if we are going to act quickly to address climate change.

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