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Tag:

energy demand

Concentrated Solar Power Could Compete With Natural Gas, Study Says

Concentrated Solar Power Could Compete With Natural Gas, Study Says

written by Yale Environment 360

Concentrated solar power (CSP) could meet a substantial percentage of current energy demand in some parts of the world, according to research published in the journal Nature Climate Change.

In the Mediterranean region, for example, the study shows that a grid-connected CSP network could provide 70 to 80 percent of current electricity demand, at no extra cost compared to natural gas-fired power plants.  CSP could also feasibly meet energy demands in parts of southern Africa, according to researchers.

CSP systems use mirrors or lenses to concentrate solar rays into a small area. The concentrated energy heats a liquid that produces steam to drive turbines, which means that the collected energy can be stored as heat and converted to electricity when needed — a major advantage over traditional solar panels, which store energy much less efficiently.

But even CSP systems can have difficulty meeting energy demands if the sun doesn’t shine for long periods of time. The new study shows that building large, connected networks of CSP systems could overcome that challenge, making CSP economically competitive with gas-fired power plants in at least two regions.



June 25, 2014 2 comments
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The Natural Gas Revolution – Good or Bad for Energy Efficiency?

written by Walter Wang

If there were an equivalent in the energy industry to Time Magazine’s Person of the Year, natural gas would be this year’s winner.

The dramatic rise in natural gas supply, and fall in price, has reconfigured the energy scene in the United States, suddenly creating a bounty of domestic energy, driving down wholesale power prices and speeding retirement of polluting coal-fired plants.

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September 20, 2012 0 comment
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Charging Your Gadgets with Solar Power

written by Walter Wang

As our lives are completely dominated by gadgets that guzzle electricity, we should look for ways to mitigate their energy demands. Using solar electricity to power them is one of the options.

Granted, not many solar-powered chargers are efficient enough, but there are some models out there

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July 5, 2012 0 comment
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Apple Defends Cloud Computing’s Green Cred

written by Walter Wang

Apple disclosed sensitive information about energy demand at the data center housing its iCloud service for the first time on Tuesday, defending its green credentials in the face of a campaign by Greenpeace.

In a report rating 14 companies leading the migration

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April 18, 2012 0 comment
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China Most Likely Country to Fund Renewables

written by Walter Wang

A recent Bloomberg survey of key energy decision-makers concluded that China shows more government support than any other country for funding renewable energy. It also shows equally high support for transformational clean technologies, like smart grids and electric cars. With the right government backing, China could address its own energy security

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December 21, 2011 1 comment
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ExxonMobil Forecasts Major Shift to Greener Vehicles

written by Yale Environment 360

A new report from ExxonMobil predicts that nearly half of the world’s cars will either be hybrids or powered by alternative fuels by 2040.

While hybrids now account for just about 1 percent of all vehicles worldwide, the oil giant forecasts that hybrids and alternative energy vehicles will move to

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December 12, 2011 4 comments
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Hooah For Hybrids: 9 Ways the Military Is Curbing Energy Use

written by Walter Wang

The mission: defeat the enemy while preserving Uncle Sam’s pocketbook. Saving the Earth is a worthy, but secondary, objective.

The Department of Defense last week rolled out its plan to consume less, and find new ways to source, energy. The need has become particularly pressing as operations in Afghanistan and Iraq last year led

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June 21, 2011 1 comment
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BP Says Renewable Power to Leap Ahead by 2030

written by Solar Calfinder

Yes, you read that correctly.

In an assessment eerily similar to one delivered by Mark Delucchi and Mark Jacobson (and broken down here) less than a week ago, BP – the energy company that we all love to hate – says that the diversification of energy resources by 2030 will see renewables leaping ahead of fossil

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January 25, 2011 0 comment
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Denmark’s Growing Sustainable Business Potential

written by Justmeans

In the United States, even the most basic programs for encouraging renewable energy and sustainable business have a hard time making it through Congress. On the other side of the Atlantic, however, western European countries are lining up to demonstrate that how industrialized nations can build up their economies with renewable power. Justmeans has already covered

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September 30, 2010 1 comment
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Green Business Blog Carnival – Week 5

written by Walter Wang

It’s Friday. It’s five o’clock somewhere. It’s also the 5th week of the Green Business Blog Carnival, a traveling series of green business news, commentary, and insight. Next Friday, check out the carnival at Green Marketing TV.

Grab yourself a margarita and enjoy the show…..

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July 9, 2010 2 comments
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Cold Snap Spurs Power Rationing in China

written by Walter Wang

BEIJING (Reuters) – Cities across eastern and central China are rationing power for industry and urging residents to limit gas use after a wave of icy weather sent energy demand soaring while straining supplies of coal that were already tight.

Much of China’s manufacturing and farming heartland shivered on Wednesday under snow, sleet and unusual cold that drove south after dumping big snowfalls on Beijing and much of the country’s north in past days.

Daytime temperatures in Shanghai and across the nearby coastal provinces of Jiangsu and Zhejiang skidded close to 0 degrees Celsius (32 F), and many areas inland were hit by snow or sleet, according to meteorological departments.

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January 7, 2010 0 comment
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Millennium Project Reports Dramatic CO2 Emissions & Energy Demand

written by Ceylan Thomson

Update: This article has been modified since its initial publication. Please note that the report mentioned in this article is not a United Nations publication. More information about the authors and the report can be found here.

A major report issued by the United Nations Millennium Project has just been released. It finds that half the world appears vulnerable to social instability and violence due to increasing and potentially prolonged unemployment from the recession as well as several longer-term issues: decreasing water, food, and energy supplies per person; the cumulative effects of climate change; and increasing migrations due to political, environmental, and economic conditions. It also finds some good in the global financial crisis, which may be helping humanity to move from its often selfish, self-centered adolescence to a more globally responsible adulthood.

After 13 years of the Millennium Project’s global futures research, it is increasingly clear that the world has the resources to address its challenges. Coherence and direction has been lacking. But recent meetings of the U.S. and China, as well as of NATO and Russia, and the birth of the G-20 plus the continued work of the G-8 promise to improve global strategic collaboration. It remains to be seen if this spirit of cooperation can continue and if decisions will be made on the scale necessary to really address the global challenges discussed in this report.

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August 4, 2009 2 comments
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Heat Wave Demonstrates Limitations to Wind Power

written by

The Pacific Northwest just finished four days of triple digit temperatures, which put the heat on renewable energy sources to keep up with demand. Just as records were being set for power consumption, wind power generation slowed due to the calm air from the locked-in high pressure system.

The extreme weather highlights the reality that wind — and to a lesser extent hydropower — may not be a panacea for power production.

Southern Washington and the Portland metro area had a record breaking streak of warmth that pushed energy demand to record highs, but the high pressure system also featured calm breezes. The local utility Bonneville Power Administration (BPA) had to quickly balance the reduction in wind power with increases in hydropower.

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August 1, 2009 3 comments
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Desertec Project – a sound alternative to Russian gas pipelines?

written by Levent Bas

Energy demand in Europe is not growing as fast as in other parts of the world but it still constitutes a significant portion of global energy demand.  Europe’s share of global primary energy demand is around 14%, although it is likely to decrease to 11-12% by 2030 according to IEA forecasts. While growth is slower than 50 years ago, energy for Europe continues to be a strategic issue.

On July 13 2009, the first international agreement on the Nabucco project was signed in Ankara to ensure gas supply for Europe from the Caspian Region to Austria through Turkey and Eastern Europe. Europeans are to almost 50% dependent on foreign resources for their primary energy demand.  Having experienced gas cuts in recent years, resulting in hard times for their industries and residents, Europe would like to become less dependent on Russia by securing its supply from different sources.

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July 17, 2009 1 comment
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