Posts Tagged "renewables"

Wind power 11% of UK energy, and rising
by NICK ROSEN on MARCH 5, 2014 - 1 Comment in ENERGY

The UK’s wind power industry is breaking records EVERY MONTH after storms battered Britain this winter.

According to the latest figures, wind energy met 11 per cent of total electricity demand in February, breaking the previous 10 per cent record set in December 2013.

It is the relative supply security offered by renewable energy that the new figures underline, against the backdrop that Russia could respond to sanctions over the Ukraine by restricting gas supplies to Europe. (more…)

Mobile driving millions off the grid and on the cloud
by ALEXBENADY on MARCH 4, 2011 - 1 Comment in EVENTS

One in 138 million

In the developed world, folks tend to go off-grid for ideological reasons. But in the developing world the main reason people need off-grid electricity is to power their mobile phones, says a new report out this week.
The study by computer firm Cisco found that the explosion in mobile phone use is a prime factor driving tens of millions people in the developing world to set up off grid power, says the study. (more…)

Piggy power (aka Anaerobic digesters)
by VEG-HEAD on MAY 18, 2010 - 0 Comments in ENERGY

New fuel plant

Anaerobic Digestion could transform the economics of livestock production and save energy at the same time, according to a packed workshop at the 2010 British Pig & Poultry Fair.

Across Europe there are more than 4,000 anaerobic digester plants, but only 25 of those are in the UK.   The latest UK  plant to be given planning permission last year, in Higher Fraddon, Cornwall, has yet to be built.
Green Party attack central power
by ALEXBENADY on APRIL 17, 2010 - 2 Comments in EVENTS

Green Queen LucasThe UK Green Party manifesto for the upcoming general election explicitly attacks the idea of centralised power and  promises to take from the rich and give to the poor.

Speaking before the launch of the manifesto, Green Party leader Caroline Lucas (pictured) promised a “signifcant increase in decentralised energy.” Arguing against the inefficiencies of the grid she said, “many centralised power station waste as much of two thirds of their energy in heat through their cooling towers and in distribution losses.” (more…)

Tough Times Survival Guide vol 1 – book review
by WRETHAOFFGRID on OCTOBER 8, 2009 - 4 Comments in FOOD, PEOPLE, SELF-SUFFICIENCY, URBAN, WORK, WRETHA

1192_1459_largeReading, learning, it’s what I enjoy doing. Before the internet, I would go to the three local libraries in my hometown, I would check out as many books as each on would allow, take them all home, read-read-read until I had gotten through all of them, then I return the books to their respective homes and start all over again. I tended to read non-fiction, I preferred them over fiction most of the time. With the exception of a few notable authors such as Stephen King, Jean M. Auel, and such…

With the advent of the internet and ebooks, I mostly read what I can get in digital format, including audiobooks. So these last couple of books I’ve read, I have held in my hand, turned pages, it was quite old-school for me. J I love it. Now, on to the book review. (more…)

Makeshift Workshop Skills for Survival and Self-Reliance book review
by WRETHAOFFGRID on OCTOBER 3, 2009 - 6 Comments in OFF-GRID 101, SELF-SUFFICIENCY, WRETHA

I typically do reviews on eBooks, but a while back I was contacted by James Ballou to do a review of a hard copy, Makeshift Workshop Skills for Survival and Self-Reliance, published by Paladin Press. Of course I was thrilled to review his book; honestly I had seen it previously and had been interested in reading it, so I jumped at the chance. It turns out that my instincts were correct, this is a great and useful book! (more…)

Daryl Hannah arrested
by SPY_VONDEGA on JUNE 24, 2009 - 1 Comment in COMMUNITY, OFF-GRID 101

hannah-arrest
It beats plugging movies
Off-Grid actress Daryl Hannah has been arrested during an anti-coal protest in West Virginia.

The Splash star,who has off-grid homes in the Rockies and Malibu, was taken into custody after she and others blocked a road into a coal mine in Raleigh County, Tuesday.

Daryl, 48, was protesting against plans to use controversial method of mountaintop removal mining, which involves blasting the mountain summit off to expose coal seams. She was arrested on misdemeanour charges of obstruction and impeding traffic, and not for the first time.

(more…)

Smart Grid ploy to grab stimulus funds
by NICK ROSEN on JUNE 11, 2009 - 1 Comment in ENERGY, URBAN

dumb-grid
Hidden costs of the Grid
US utility companies are trying to cut the large amount of power wasted as it goes down the line to customers. They say they are acting because of looming limits on greenhouse-gas emissions in the US.

The greedy and slothful  companies are in fact motivated by billions of economic stimulus dollars being handed out. The stimulus money could be used more effectively installing renewable power and microgrids in local communities.

Harvesting extra efficiency from the national grid could postpone the next power plant, but so could introducing widespread household-level renewables.  Installing micro-grids everywhere  would cut down on the losses made in transmission.

“It  could be a bigger factor in reducing emissions than retraining customers on how to use their electricity,” said Thomas Jobes, the director of distribution reliability for American Electric Power Company Inc. (AEP), a Columbus, Ohio, electric utility.  Well he would say that wouldn’t he? It depends how badly you retrain the customers.  Mr Jobes did not explain why the mooted efficiencies have not already been implemented.

Power loss

Transmission and distribution lines are imperfect conductors, with over 10% of power lost as heat. If these so-called line losses were reduced by a tenth on the distribution system alone, the power saved would equal all the wind generation installed in the U.S. in 2006, according to the industry’s Electric Power Research Institute, or EPRI. That’s 2,454 megawatts, or approximately the equivalent of three typical coal-fired power plants.

However the biggest losses are made in the generating stations where a vast amount of heat energy is wasted.

The lazy energy companies have known for decades that they are losing (our) money this way, but in their near-monopoly position there was no incentive to do anything about it.  Now they are siezing on President Obama’s stimulus money to do the things they ought to be paying for out of their profits.

Balancing Act

AEP has demonstration projects under way that use sensors placed on distribution lines to help the utility manage the power system more effectively. Line losses grow as voltage on a line increases, but utilities can cut grid inefficiency by balancing voltage across the system so one line doesn’t carry a much larger electrical load than a nearby line does.

AEP told Dow Jones news service it plans to seek federal funding for the demonstration projects under the economic-stimulus legislation passed in February. The American Recovery and Reinvestment Act set aside $11 billion for the creation of a smart grid, which utilizes digital communications to increase efficiency. Of the $11 billion, $615 million has been set aside for demonstration projects like AEP’s.

“Smart-grid technology can help regulate the voltage of the distribution system,” said Omar Siddiqui, who spent a decade working for power companies before joining the EPRI, based in Palo Alto, Calif.

Utilities are also exploring ways to make the power lines themselves more conductive. In 2007, New York’s Consolidated Edison Inc. (ED) signed an agreement with American Superconductor Corp. (AMSC) to test a line using wires cooled by liquid nitrogen, which eliminates the electric resistance on the line and allows it to carry up to 10 times more power than standard copper cables.

Smart Grid or Dumb Grid?

Smart-grid and superconductor technologies are at an early developmental phase, with further research required (again, to be funded by our stimulus money). Most utilities are sticking to traditional methods of reducing grid inefficiencies, such as replacing older equipment, including the power lines themselves, with newer models.

“Most of what we can do right now is with the equipment,” said George Bartlett, the director of transmission operation for Entergy Corp. (ETR). “Conceivably, when the smart grid is implemented, you could better balance power flows over the lines to reduce losses.”

Greener Circuits

Still, efforts to lower line losses with smart-grid technology are gathering steam. Public Service Enterprise Group Inc. (PEG) and FirstEnergy Corp. (FE) are among the utilities participating in EPRI’s “green circuits” initiative, an 18-month research-and-development project launched last year that aims to improve distribution-system efficiency. The project involves field tests of smart-grid technology.

Standard electric-grid equipment is designed to ensure that the system stays within required voltage levels at times of peak demand, such as on hot summer days when many customers run their air conditioners. But the grid is less efficient during off-peak periods.

Although projects like EPRI’s and AEP’s haven’t yet been deployed on a commercial scale, they could help utilities maintain the optimal voltage levels across the grid at different times of the year, decreasing line losses and allowing utilities to defer the construction of power plants that run on fossil fuels, said Paul Dorvel, a project manager with R.W. Beck, a Seattle-based technical consulting firm that has a dependency relationship on the Utility companies.

“Depending on what generation source would be selected, the reduction in losses and improvement in efficiency could defer that amount of CO2 emissions from a [natural gas] or coal facility,” Dorvel said.

Energy plan
by JUICED on JANUARY 21, 2009 - 1 Comment in ENERGY


He can, but will he?
“The world has changed; America must change with it,” says the new President. But will the new administration change its existing environmental  pledges, or stick to their promised policies?

The stated policy is as follows.

? Help create 5 million new jobs by investing $150 billion over 10 years in clean energy initiatives

? Increase the nation’s use of electricity from renewable sources to 10 percent of our total use by 2012, and 25 percent by 2025

? Institute a national cap-and-trade program to reduce greenhouse gas emissions 80 percent by 2050. (more…)


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