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Energy (303) Renewable Energy (51) Carbon Emissions (38) Oregon (11) CARBON MONOXIDE ADDITIVES (4)
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Being the developer of a low profile, high efficiency wind turbine and generator it pains me to have to dispel the myth that centralized renewable energy such as wind and wave reduces carbon emissions. Power produced in one location then transmitted via high voltage lines many miles then stepped down to the lower voltage distribution lines before delivery to the end user is centralized generation. Centralized generation relies upon the vast interconnection of transmission and distribution lines that crisscross the country known simply as the grid and herein lays the problem. "Consequently, operating fossil capacity in this mode generates more CO2 per kWh generated than if operating normally.” Six wave park applications have recently been made to the Federal Energy Regulatory Commission proposed along the Oregon coast. Each wave park is listed at 20 to 180MW output with ties to the mainland via 25kV transmission lines. Wave energy may be more predictable than wind energy but some wave buoy generators have a minimum and maximum swell they can operate in. Consequently, centralized wave energy will require fossil fuel powered generators to idle on standby and then cycle up rapidly to maintain grid integrity. Sadly, electricity cannot reasonably be stored on an industrial scale. So how do we reap the benefits of carbon neutral power generation sources without relying upon a fossil fuel powered grid? The answer may lie in decentralized or distributed energy. Distributed energy is power produced at or near the point of consumption. It is called distributed energy because this power is generated at the lower voltages carried by the distribution lines we see lining our roadways. Distributed generators can be gas powered or renewable like PV and small wind. All the synchronization problems associated with centralized power are significantly reduced or eliminated at the lower voltage distribution level. Power generation at the neighborhood or district scale or just supplying individual homes and businesses is much easier to manage and surprisingly, is less expensive to the rate payer. Studies on wide scale deployment of distributed generation indicate as much as 44% reduction in capital costs versus centralized power and a 15% savings to the consumer in retail costs. The transition from centralized to decentralized will not be easy despite a growing global movement toward wide scale distributed energy. One motivating factor toward decentralizing is the aging and deteriorating grid itself. While it is hard to find reliable estimates on the eventual cost of replacing and modernizing the grid, at a million dollars a mile and climbing, the number could be in the trillions. Our electrical infrastructure has been ignored and the exorbitant cost of replacing the grid to maintain a costly centralized system makes transitioning to distributed energy almost inevitable. It is the cost to the planet in carbon emissions however, that makes it mandatory.
http://mgx.com/blogs/ Mary Geddry lives and writes in Coquille, Oregon. Her oldest son is a Marine grunt and served two tours in Iraq. Mary is an anti-war activist.'
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