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Ever volatile fuel prices, security of supply, renewable energy cost reductions and environmental-climate concerns are dramatically accelerating the demand for greener alternatives.

It has become a global imperative that we break our addiction to fossil fuels. Providing for the ever increasing energy and transportation needs of the planet is going to take a wide range of alternative energy sources, cleaner fuels, the smart grid and advanced storage solutions.

These technologies are finally establishing themselves in the energy mix and becoming mainstream .....an emerging multi trillion dollar market rapidly becoming one of the most significant industrial sectors this century. The future is bright for renewable energy sources and a greener sustainable world.

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New rays of hope for solar power's future

25 08 08 - 02:58 New rays of hope for solar power's future




By Mark Clayton




Boulder City, Nev. - From five miles away, the Nevada Solar One power plant seems a mirage, a silver lake amid waves of 110 degree F. desert heat. Driving nearer, the rippling image morphs into a sea of mirrors angled to the sun.




Nevada Solar One Video




As the first commercial "concentrating solar power" or CSP plant built in 17 years, Nevada Solar One marks the reemergence and updating of a decades-old technology that could play a large new role in US power production, many observers say.

“Concentrating solar is pretty hot right now," says Mark Mehos, program manager for CSP at the National Renewable Energy Laboratory in Golden, Co. "Costs look pretty good compared to natural gas [power]. Public policy, climate concern, and new technology are driving it, too." Spread in military rows across 300 acres of sun-baked earth, Nevada Solar One's trough-shaped parabolic mirrors are the core of this CSP plant - also called a "solar thermal" plant. The mirrors focus sunlight onto receiver tubes, heating a fluid that, at 735 degrees F., flows through a heat exchanger to a steam generator that supplies 64 megawatts of electricity to 14,000 Las Vegas homes.

Today the United States has 420 megawatts of solar-thermal capacity across three installations - including Nevada Solar One. That's just a tiny fraction (less than 1 percent) of US grid capacity. But Nevada Solar One could signal the start of a CSP building boom.

Efforts to generate another 4,500 megawatts of solar thermal power are now in development across California, Nevada, Arizona, and New Mexico - all of which have the flat, near-cloudless skies most desirable for solar thermal, the Solar Electric Industries Association reports.

Photovoltaic panels that produce electricity directly from the sun's rays work well on rooftops, but are still too costly for utility-scale power generation. Solar thermal, however, is nearing the cost of a natural gas-fired turbine power plant - making it a winner with several power companies that have signed long-term contracts to purchase solar-thermal power.

Desert land lures developers
In fact, there's a land rush at the federal Bureau of Land Management. As of July, the BLM reported more than 125 applications to build solar power on about 1 million acres of desert, up from just a handful of proposals a few years ago.

"We think there's a good market there," says Travis Bradford, an expert at the Prometheus Institute, a Boston-based solar-energy market research firm. His firm sees 12,000 megawatts (12 gigawatts) of solar thermal installed by 2020 and maybe 20 times that in coming decades.

Dr. Mehos says perhaps 100,000 megawatts (100 gigawatts) could be built across the US Southwest over the next 30 years.

"You could supply the entire US with the sun power here in a little piece of the Southwest," says Dan Kabel as he strolls beneath a row of trough-shaped mirrors. Mr. Kabel is chief executive of Acciona Solar Power, which owns the $266 million Nevada Solar One project. "As fossil fuel costs rise, this plant is unaffected. "If America doesn't do this, if we don't install many more of these clean solar-power systems, we'll just end up seeing a lot more fossil-fuel plants instead."

Still, the cost of power remains critical. Commercial CSP systems emerged in the late 1990s, only to be squashed by falling natural gas prices.

Today, as natural gas prices rise along with concerns about carbon emissions and global warming, the stable, predictable costs of carbon-free solar thermal is increasingly comforting to utilities.

"What's different now from the '80s and '90s is that we have much higher natural gas prices than back then," Mehos says. "I don't think people foresee a serious drop in natural gas prices now. Even if they fell 30 percent, CSP would look attractive."

The importance of tax credits
Concentrating solar technology produces electricity for about 17 cents per kilowatt hour (kWh), Mehos estimates. But subsidies remain critical to solar thermal development in both the US and Spain, two global hotbeds of CSP development. With the federal investment tax credit, or ITC, costs drop to about 15 cents per kWh - low enough to compete with natural gas.

A key feature of solar thermal is its potential to use heat-storage technology to generate power after the sun sets. Nevada Solar One is considering adding a molten-salt or similar system to allow it to supply power for several hours after sundown.

With such storage systems, solar thermal becomes even more attractive to utilities, experts say. Arizona Public Service is contracting with Abengoa to build a 280-megawatt solar thermal plant near Phoenix that will cost more than $1 billion and have molten-salt heat storage. "Arizona Public Service really does want to put this [solar thermal] plant in because in the future this really could replace natural gas,” says Reese Tisdale, an analyst at Emerging Energy Research, a market-research firm in Boston. "They're the first to say that once this plant is installed, the fuel is free."

So far, US development of solar thermal is dominated by a handful of big overseas companies, including Abengoa and Acciona (Spain), as well as Solel Solar Systems (Israel), Solar Millenium (Germany), and Ausra (Australia), now headquartered in Palo Alto, Calif.

To stimulate development, Spain has deployed hefty, long-term feed-in tariffs. But in the US market, solar thermal is hanging by a thread. The investment tax credit, which covers 30 percent of a CSP facility's cost, will expire at year's end unless renewed by Congress. But bills to renew the ITC have been blocked eight times this year by Senate Republicans.

"What we're seeing with all these companies lining up for solar thermal is hugely promising," says Monique Hanis, spokeswoman for the SEIA. "But without the ITC, all of these solar thermal plants will be put on hold."

That would pour cold water on a raft of potential breakthrough solar-thermal technologies promoted by US companies. So far this year, five US-based start-up CSP companies have gotten $419 million in private funding for their technologies, Emerging Energy Research reports.

BrightSource Energy, Stirling Energy Systems, eSolar, Skyfuel, and Infinia Corp. are start-up US companies pursuing refinements of existing technologies - and major new ones - and the funding to prove them. One of the key goals is to make mirrors and receivers more efficient in order to achieve higher temperatures - which tend to make for greater efficiency and lower cost.

BrightSource Energy, funded by Google and others, received $100 million in May to proceed with its advanced "central receiver" approach. It has refined 1990s technology to develop simpler, cheaper to manufacture mirrors that focus the sun's rays on a tower receiver, heating water to nearly 1,000 degrees F.

By contrast, Stirling Energy Systems in April received $100 million to further develop its "SunCatcher" approach - a relatively small system in which a 38-foot dish supporting 82 curved glass mirrors automatically tracks the sun. The solar heat is focused onto a high-efficiency four-cylinder reciprocating Stirling engine. The Stirling engine uses solar heat to expand (not burn) hydrogen gas to move its pistons, which spin an electric motor with no fuel cost or pollution.

Each SunCatcher dish generates about 25,000 watts, turning about 30 percent of the sun power that strikes it into electricity, compared with about 20 percent for parabolic-mirror systems.

Although the technology has yet to be proven on a commercial scale, Stirling Energy Systems announced in June that it had applied for permits to build a 750-megawatt "Solar Two" facility on 6,500 acres of desert in California's Imperial Valley about 100 miles east of San Diego. When complete, the plant could supply power for about 500,000 homes.

Another technology called "linear fresnel" is being pursued by Ausra, which has opened a factory in Las Vegas to build inexpensive mirrors mounted on rolling platforms. Though operating at lower temperatures, the technology could operate at costs well below current levels, some observers say.

Back at Nevada Solar One, Mr. Kabel looks out across the desert to a hulking building on the horizon - a natural gas fired turbine power plant - an arch rival power producer. But maybe not for too much longer.

"The way things are going, with our costs coming down, this valley is going to see a lot more of these," he says, gesturing to the rows of mirrors. "Fossil fuel generation is headed one way - like the dinosaurs." Used tags: , , , , , , ,

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Raging wildfires: Climate changes to blame for record season?

Saturday 16 July 2011 at 06:07 am Raging wildfires: Climate changes to blame for record season?


By Pete Spotts


The images are stark: soot-grimed firefighters steering bulldozers or wielding shovels to clear underbrush; curtains of orange flame tracing the contours of summits; aircraft dumping chemicals to slow a fire's progress.

Between Jan. 1 and early July of 2011, slightly more than 38,000 wildfires charred the landscape in the United States at a record pace. So far this year, wildfires have consumed just under 4.9 million acres of forest and grassland, a cumulative expanse the size of New Jersey.

That's 1 million more acres than fires consumed during the same period in 2006, which saw a record 9.9 million acres burned for the entire year.

Beyond the numbers, this year's fires may provide the first large-scale tests of the effectiveness of projects undertaken over the past decade to help forests survive wildfires, several specialists say.

The West's forests are adapted to deal with certain types of wildfires, researchers note. But since the mid-1980s, they add, some of these forests have experienced an increasing number of fires to which they are not well adapted.

Many researchers trace this shift in part to climate change. more

Hybrid Moves Into Housing

Sunday 22 May 2011 at 01:14 am Hybrid Moves Into Housing


By Brenda Krueger Huffman

(Chicago) – Recycling - Check. Conserving energy - Check. Hybrid car - Next car, check. Hybrid home system - What? Yes, it’s here. Hybrid has seamlessly, successfully moved into housing.

Safety Power, Inc. was initially started to provide homes with back up power. The company quickly grew to include renewable energy options and advising commercial and industrial clients with electrical conservation. Recently the company has come full circle and began marketing a new more capable type of renewable energy system for homes.

The award winning firm was voted one of the “Top 5 Sustainable Product Companies in Illinois” and continues to grow its residential client base in Illinois, Indiana, and Wisconsin. Safety Power also serves larger firms on the national level.

Robert Brazzale, President of Safety Power, a master electrician turned entrepreneur, began Safety Power in 2007. An avid member of Local First Chicago, Rob believes in assisting sustaining local economies with green collar jobs and belongs to many green orientated groups in Chicago and around the country. more

Are electric car makers missing the trick?

Tuesday 29 March 2011 at 11:12 am Are electric car makers missing the trick?


by Martin Ott

I believe that electric car makers may be driving us all down the road that may result in the same sort of technology failures that we have seen in the past.
I'm not referring to the Sinclair scooter here but cast your mind back to the débâcle of Betamax v VHS home recording systems. The eventual winner was the technically inferior VHS but the battle was not resolved until innumerable consumers had paid out for worthless Betamax systems. Back in the 70's a similar conflict occurred over audio systems when America fell in love with the 8 track tape system that moved magnetic tape in a loop over the player head at a high speed resulting in a better sound. The world market finally dictated that the audio cassette was the way to go but not until millions of consumers had been lumbered with home and in-car systems that went down the technological cul de sac. more

Wind Turbine Manufacturer Acknowledges SGS´s Contribution towards Successful Project Completion

Tuesday 29 March 2011 at 10:57 am by Suresh Varma

The Theni Wind Farm project was developed by CLP India Pvt. Ltd., one of the major wind farm project developers in India. Located in the south western part of Tamilnadu, a southern state of the country, the facility consists of 60 Vestas V82 geared wind turbines. As recognition of its contribution towards the successful execution of this wind power project SGS received Vestas award.

Each turbine at the wind farm has a capacity of 1.65 MW IEC Class IIB machine with a blade diameter of 82 m. After a six-month long completion period, the Theni Wind Farm was officially opened in May, 2010.

Acting as contract engineer during project execution, SGS was responsible for ensuring that all activities were carried out at the site by the contractor in line with the final agreement. In doing so, SGS supervised the quality of construction works, the fulfillment of the technical parameters and kept the project within the scheduled time and contracted price. more

E.ON uses PPC's Broadband Powerline technology in smart grid project

Tuesday 29 March 2011 at 10:37 am E.ON uses PPC's Broadband Powerline technology in smart grid project

by Power Plus Communications

Mannheim - Power Plus Communications AG (PPC), the leading provider of Broadband Powerline Communication systems (BPL) for smart grids has taken on a key role within an E.ON smart grid project to facilitate an extension of Cisco's Connected Grid Solution.

E.ON Westfalen Weser AG is currently trialing smart grid technology within its network of 1.3 million inhabitants and PPC's proven medium voltage BPL solution has connected substations in the project using the existing power grid.

Using BPL technology, standard compliant and IP-based data transfer rates of 5-30 Mbit/s can easily be achieved via the medium voltage cable itself. Within E.ON’s smart grid project, PPC's medium voltage technology facilitated the extension of Cisco's Connected Grid Solution. The Cisco smart grid Router and Switches used in the project are highly compatible with BPL networks, providing a real cost advantage over fiber optic networks – which can be much more expensive where cables are not pre-existing.

By combining their technology at Westfalen Weser, PPC and Cisco have ensured the evolution of fast and efficient smart grids which are controlled on an IP basis. This increases the reliability of the power grid, fulfills regulations and drives down costs. At the same time this modern smart grids communications technology makes it possible to effectively integrate renewable energy into the grid. more

MIT Infrastructure "Life Cycle" Study is Progress Both Left & Right Can Embrace - Part 2, Fiscal Responsibility

Saturday 19 February 2011 at 09:02 am By Brenda Krueger Huffman


Chicago – Perhaps moving to the center is where we all need to be politically on the environment and effective spending compatibility. Not all green technology is crazy, and not all business profit or government expenditure is evil.

Even if you do not believe in man caused climate change, we can all agree leaving a cleaner planet and a more fiscally responsible government for the next generation is preferable to not doing so.

Perhaps green technology can be cost effective, and government fiscal responsibility may realistically include affordable green initiatives. Honest “life cycle analysis” and “life cycle cost analysis” study considerations should be a political compromise starting point both the left and the right can embrace. more

Global warming: Impact of receding snow and ice surprises scientists

Thursday 27 January 2011 at 11:05 am Global warming: Impact of receding snow and ice surprises scientists

By Pete Spotts


Washington - A long-term retreat in snow and ice cover in the Northern Hemisphere is weakening the ability of these seasonal cloaks of white to reflect sunlight back into space and cool global climate, according to a study published this week.

Indeed, over the past 30 years, the cooling effect from this so-called cryosphere – essentially areas covered by snow and ice at least part of the year – appears to have weakened at more than twice the pace projected by global climate models, the research team conducting the work estimates.

The study, which appeared online Sunday in the journal Nature Geoscience, represents a first cut at trying to calculate from direct measurements the impact of climate change on the Northern Hemisphere's cryosphere. The study was conducted by a team of federal and university scientists who examined data gathered between 1979 and 2008. more

EPA presents plan on greenhouse gases

Wednesday 05 January 2011 at 10:38 pm By Mark Clayton


Washington - Setting the stage for a New Year battle royal between Congress and the White House over greenhouse gas emissions, the US Environmental Protection Agency Thursday laid out a timetable for the nation's largest carbon emitters – power plants and refineries – to begin curbing those pollutants.

Republicans have said all year that they plan to pull out all the stops to keep the EPA from phasing in greenhouse gas (GHG) regulations beginning in 2011, saying they would damage the energy industry, raise prices, and cost jobs.

Rep. Fred Upton (R) of Michigan, the incoming chairman of the House Energy and Commerce Committee, has said he opposes the regulations on greenhouse gases and indicated he would lead efforts to revoke EPA regulations in the next Congress. The new regulations, he says, will likely lead to the shut down of coal-fired power plants.

"To protect jobs and fortify our energy security, we should be working to bring more power online, not shutting plants down," Mr. Upton said in a statement. "We are woefully unprepared to meet our nation's growing energy demands, yet this administration's 'none of the above' energy policy will do nothing but cost jobs, make energy more expensive, and increase our dependence on foreign sources of energy."

Environmentalists lauded the EPA's move. more

Supreme Court takes global warming case that targets power companies

Monday 13 December 2010 at 03:21 am By Warren Richey,


Washington - The US Supreme Court on Monday agreed to examine a major environmental lawsuit that seeks to force six electric power companies to cap and reduce their carbon-dioxide emissions to fight global warming.

The lawsuit - filed in 2004 by eight states, the City of New York, and three land trusts - targets what it claims are the largest emitters of carbon dioxide in the United States and among the largest in the world.

It seeks a judicial order declaring that the fossil-fueled power plants are a "public nuisance." It also seeks a judicial order capping the plants' greenhouse gas emissions and requiring the plants to adopt a schedule of reduced emissions in future years. more

Outside Cancun climate conference, Caribbean Sea testifies to global warming

Monday 13 December 2010 at 03:09 am By Ezra Fieser,


Bayahibe, Dominican Republic - This summer's extreme heat may seem like a distant memory as winter approaches the United States.

But the summer that broke heat records across the Northern Hemisphere is still being felt below the surface of the Caribbean Sea: 2010 will likely be one of the most deadly years on record for coral reefs.

If diplomats attending the two-week global climate change talks that opened Monday in Cancun, Mexico, want more evidence of the negative and potentially devastating affects of warming temperatures, they need look no further than the blue sea outside their hotels. Researchers say that throughout the Caribbean coral reefs are "bleaching," a condition that occurs when they are under extreme stress due to warmer-than-normal sea temperatures. more