Falling prices for European carbon emissions permits could stunt investment in the renewable energy sector both within and outside Europe, but the credit crunch continues to have a greater impact. ...A falling carbon price could worsen the economics of renewable energy further, as falling demand for carbon emissions permits in a deepening recession pulls down carbon prices, benefiting fossil fuels.

To find out what effects, if any, large scale wind farms might have on wind patterns, Daniel Barrie and Daniel Kirk-Davidoff of the University of Maryland concocted an experiment. ...On average, the mammoth installation lowered wind speeds by 2-3 meters per second (5.5-6.7 miles per hour) immediately downwind. But the turbines also disrupted air currents on a large scale that rippled out like waves across the northern hemisphere.

The rush to build "green energy" is dividing environmental groups, many of whom believe such projects will irreparably harm ecologically sensitive habitat. ...If millions of acres are razed for solar plants, swaths of wildlife habitat will be eliminated, putting the desert tortoise, the Mojave ground squirrel and the American badger at even greater risk, conservationists say.

Wind development in New York has hit a bit of turbulence. The nationwide financial crisis has put the brakes on a wind farm under construction in northern New York and another developer has aborted possible projects in eastern and central New York after trouble securing land. And wind energy companies are now being asked to abide by a code of ethics by Attorney General Andrew Cuomo.

General Electric Co., the world's biggest maker of power-generation equipment, may delay delivery of new wind turbines as some customers are finding it harder to finance energy projects. "We haven't seen any cancellations but we have had discussions with some customers on the financial situation ...Some are looking for delays in delivery because there may be some uncertainty about renewable energy incentives or questions about how they will get financing for projects.''

That summer in Delaware, Bluewater Wind finalized its contract to build a wind farm of 70, 130-meter-tall turbines 13 miles off the coast of Delaware. After a 59 percent rate hike in state energy prices, state legislators passed House Bill 6. This consumer retail act mandated the creation of a new power plant within the state of Delaware. ...According to the [Bluewater] Web site, "There were no significant negative impacts found on fish, flora and fauna." Delaware Audubon Society Conservation Group is showcased in supporting the project, saying it's safe for birds. ...[Thomas Kunz] says there is evidence suggesting that the offshore wind turbines Bluewater proposed to build would attract bats, causing them to die.

Theolia SA, the French wind-power company part-owned by General Electric Co., dropped the most in more than five years in Paris trading after abandoning financial and operational targets. ..."Theolia is getting short of cash,'' Exane BNP Paribas analyst Yohann Terry, who has an "underperform'' rating on the shares, said today in a report. "We believe it will be difficult for the company to create significant value'' from its pipeline of wind-power projects.

Tontine Associates, the once gilt-edged hedge fund that collapsed rapidly over the past two months in the wake of the market's carnage, was renowned for its massive and highly contrarian bets in industries like home-building and steel manufacturing. ...Last week, however, the combination of big bets gone south and prime brokers demanding repayment for loans forced Gendell to announce to investors that he was shutting two of his main portfolios ...But at the center of the Tontine maelstrom is a less well-known series of trades in alternative energy stocks, especially those related to wind turbines, that played a key role in the both the fund's recent success and its collapse.

Canada is the biggest exporter of oil to the United States, and one might expect environmentalists to cheer the prospect of exchanging a little of our dependence on foreign oil for dependence on foreign wind. But some fear that a flood of clean power from Canada will undercut New England's efforts to become a national leader in green energy and technology. Jobs could be lost, they caution, and local utilities may have less incentive to reduce their use of coal and other fossil fuels that contribute to global warming. Concerns also exist that the construction of expensive transmission lines to bring renewable energy from Canada could drive up the region's electricity rates, already among the highest in the country.

Renewable energy groups hailed the Oct. 1 passage of tax credit legislation as a big step forward toward U.S. energy independence. Less than two months later, they are lobbying Congress for emergency aid to make those credits more generous. The problem, they say, is that the financial crisis has blown a hole in their reservoir of investment capital. Projects that weeks ago seemed on track to provide new clean power sources for hundreds of thousands of consumers are now starved for credit, as U.S. banks struggle to recover and begin lending again.

Offshore wind farms picked up a good breeze recently, with the U.S. government launching steps to open up the continental shelf and two Northeastern states approving local projects. The Minerals Management Service, part of the U.S. Interior Department, is preparing to lease parts of the outer continental shelf to wind-energy developers. Rules for leasing are expected by the end of the year.

As workers scramble to build an $800 million coal-fired power plant on a patch of farmland here, a crisis that began on faraway Wall Street threatens to stretch the nation's power supplies to the brink - driving up prices and laying the stage for future shortages. ..."We have to have new (power generation) capacity at some point, or we'll have brownouts, blackouts," said Mary Novak, an economist with the consulting firm Global Insight. "The problem is, too many (utilities) are betting on delay."

Babcock & Brown Ltd.'s fight to avoid becoming Australia's next victim of the credit crisis may depend on convincing bankers that it can sell assets in a market where others have failed. Babcock slumped 51 percent in Sydney trading since Nov. 6, when ABN Amro Holdings NV analyst John Heagerty said the owner of wind farms and real estate may breach loan agreements next year. ...Babcock said June 16 it was "confident'' the wind assets would be sold this year -- an assumption Heagerty said may prove too optimistic. "The sale of Babcock's wind assets is likely to be postponed further given the difficulties for the acquirers in obtaining financing,'' he said.

Blue H USA this week gave Cape Codders their first serious taste of a proposed deep-water wind farm project. ...The so-called floating turbine is, in fact, a tension-legged platform similar to those already used by the oil industry for some offshore drilling rigs, and that platform may be installed in seas 30 to 300 meters deep. The bulk of the platform is below sea level and is anchored to the sea floor, which keeps the unit stable even in high seas.

The major problem with wind as a power source is that it doesn't blow all the time. To remedy that, Texas is spending $30 million a year to bolster its back-up power, in a change to the electricity grid that began on Nov. 1. ...

While the focus on renewable energy may be good for the environment and the local economy, the turbines themselves can be a traffic nightmare for those who must figure out how to move the massive parts across the country. Some also say they pose a safety risk. ...Lisa Linowes, executive director of the Industrial Wind Action Group, cited problems caused by large wind loads ..."Under the pressure to get construction done, corners get cut," Linowes said.

Although T. Boone Pickens has become somewhat of a celebrity as of late - giving speeches and appearing on national television in interviews and commercials - the Oklahoma native is finding falling energy prices are making it difficult for his eponymous Pickens Plan to gain traction. Furthermore, a host of other outside factors have cropped up to make the Texas oilman's push for renewable energy increasingly difficult ...Depressed fuel prices, while easier on consumers' wallets, hinder efforts to persuade companies and individuals to invest in renewable energy resources, especially when combined with a shortage of discretionary cash.

Adding electricity from the wind and the sun could increase the frequency of blackouts and reduce the reliability of the nation's electrical grid, an industry report says. The North American Electric Reliability Corporation says in a report scheduled for release Monday that unless appropriate measures are taken to improve transmission of electricity, rules reducing carbon dioxide emissions by utilities could impair the reliability of the power grid.

On the campaign trail, Mr. Obama argued that spending $150 billion over the next decade to boost energy efficiency would help create five million jobs. ...Critics say analyzing only new green jobs misses half the story. "It's not looking at the other side of the coin: You are spending more money for your energy," says Anne Smith, a vice president at CRA International. ...gains in green jobs would be "more than offset" by job losses elsewhere in the economy.

BP has dropped all plans to build wind farms and other renewable schemes in Britain and is instead concentrating the bulk of its $8bn (£5bn) renewables spending programme on the US, where government incentives for clean energy projects can provide a convenient tax shelter for oil and gas revenues. The decision is a major blow to the prime minister, Gordon Brown, who has promised to sweep away all impediments to ensure Britain is at the forefront of the green energy revolution. BP and Shell - which has also pulled out of renewables in Britain - are heavily influential among investors.