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Prospects for Wave Power on Navigable Waterways: The St Lawrence River

By Harry Valentine, Commentator/Energy Researcher, , September, 08, 2011 - The economies of many nations depend on marine traffic along such navigable rivers as the Mississippi in the USA, the Danube in Europe, the Yangtze of China, the Panama Canal and the St Lawrence River that serves both the USA and Canada. Ships traveling on water invariably generate bow waves that usually disperse over a wide area from the middle of a lake, the ocean or a very wide river. The situation changes when the river channel is relatively narrow and the ships that sail through are comparatively large. more...
Article Viewed 2897 Times | 4 Comments

Re-evaluating Prospects for Tidal Power from the Gulf of California

By Harry Valentine, Commentator/Energy Researcher, , October, 19, 2010 - Changing weather patterns have reduced rainfall over the watershed area of the Colorado River and raised the specter of drastic reductions in power output from the Hoover Dam. The increasing demand for electric power from Southern California and Northwestern Mexico raises the prospect of increased co-operation between the USA and Mexico in regard to electric power production. The evolving situation also invites discussion into a variety of ideas and concepts as to how to reliably generate electric power in the region. more...
Article Viewed 1273 Times | 1 Comments

A Future Scenario of Energy and Navigation on the Great Lakes and St Lawrence River

By Harry Valentine, Commentator/Energy Researcher, , August, 26, 2010 - A lack of precipitation during late 2009 and 2010 resulted in lower than usual water levels in the Great Lakes and along the St Lawrence River, where new islands appeared. Ships had to sail at reduced load due to reduced navigation depth. Measured water levels at Montreal are over 2-metres or 6-feet lower in 2009 than in 1909. Until recently, the phenomena of long-term cyclical weather patterns were unknown. The discovery of such weather patterns explains the reduced precipitation in the watershed region of the Colorado River greatly reduced water levels in the Hoover Dam. more...
Article Viewed 1156 Times | 1 Comments

Ocean Power May Be Able To Turn The Tide When It Comes To Renewable Energy Technologies

By Marcus Reyes, , , July, 14, 2010 - The month of June marks World Environment Day and World Ocean Day, two environmentally conscious days whose main purpose is to spread awareness of environmental issues taking place in today's world. However, a black cloud hangs over this year's events as 42,000 gallons of oil a day ¹ gushes into the Gulf of Mexico after the Deep Horizon oilrig exploded and sank on April 20, 2010. This oil spill is one of, if not the biggest natural disaster that America has had to deal with and it shows that the time is now to invest, innovate, and utilize specific renewable energy technologies that can reduce our dependency on oil consumption and preserve our environment. more...
Article Viewed 1387 Times | 23 Comments

Diversified Renewables -- Florida Looks to Mine Ocean Energy

By Howard Hanson, Ph.D, Professor of Geosciences, Florida Atlantic University, August, 26, 2009 - Because energy use in the United States is so dominated by fossil fuel combustion -- the Department of Energy estimates that dominance at about 85 percent -- it is not an overstatement to suggest that the country has nearly all of its energy eggs in a single basket. The fact that a significant portion of that basket, the half or so holding the petroleum, is woven together with a fragile political alliance involving the volatile Middle Eastern oil producers makes the metaphor all the more compelling. more...
Article Viewed 1065 Times | 4 Comments

Study Says Geothermal Energy Most Efficient and Improving Fastest

By Bill Opalka, Editor-in-Chief, Topic Centers, Energy Central, August, 12, 2009 - A new study says geothermal energy is the most efficient source among renewable energy resources and could become cheaper than fossil fuel-generated energy with a concerted government research effort. more...
Article Viewed 1391 Times | 16 Comments

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Looking for 200 Gigawatts

By John Kemp, Director, Offshore Wave Energy Ltd., July, 22, 2009 - The excellent summary of the ocean power scene by Peter Asmus in Issue 6 of the Energy Central Renewables Topic Center highlighted a number of matters that are of increasing importance as ocean power technology matures. At one point, he suggests that up to 200 GW of marine renewables might be developed by 2015 if U.S. and European targets are to be met, with over half being provided by wave energy. more...
Article Viewed 891 Times | 2 Comments

Canada's Geothermal Potential: Learning from the U.S.

By Craig Aspinall, Public Policy Manager, Western GeoPower Corp., July, 08, 2009 - Canada has literally been a `powerhouse' of energy resources for decades with hydroelectricity, natural gas and oil playing a major role in the nation's economy, but only recently has begun paying serious attention to the potential for electrical production from geothermal energy to help meet the demand for "green, renewable" power in the western provinces and western U.S. more...
Article Viewed 987 Times | 1 Comments

New Kinds of Hydropower Spark Buzz

By Peter Asmus, Analyst, Pike Research, June, 24, 2009 - While the total installed capacity of emerging "second generation" marine hydrokinetic resources -- a category that includes wave, tidal stream, ocean current, ocean thermal and river hydrokinetic resources -- was less than 10 MW at the end of 2008, a recent surge in interest in these new renewable options has generated a buzz, particularly in the United Kingdom, Ireland, the United States, Portugal, South Korea, Australia, New Zealand and Japan, among other countries. It is expected that within the next five to eight years, these emerging technologies will become commercialized to the point that they can begin competing for a share of the burgeoning market for carbon-free and non-polluting renewable resources. more...
Article Viewed 1145 Times | 5 Comments

The Business of Geothermal - A Competitive Resource

By Lisa Cohn, Writer, Real Energy Writers, June, 10, 2009 - For Michael Yackira, president and chief executive officer of Reno-based NV Energy, deciding whether to purchase geothermal energy to meet the state's renewable portfolio standard is a no-brainer. more...
Article Viewed 918 Times | 2 Comments

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