Archive for the ‘Non Fossil Energy’ Category

Kelptomaniacs to the Energy Rescue

Friday, January 20th, 2012

More interesting news about new forms of biofuels:

“Scientists in a cluttered Berkeley laboratory are working a bit of biochemical wizardry to transform ordinary seaweed into biofuels that promise a new source of energy for this oil-dependent nation.

The lab’s research has already fueled a startup company whose workers in southern Chile are farming nearly 200 acres of kelp offshore and building a pilot plant that aims to demonstrate it can scale up production rapidly to produce a major source of ethanol and essential chemicals in the very near future.

The raw material is the same waving kelp species that sea otters love in Monterey Bay, but its tough fronds have long proved impossible for common bacteria to digest…
SF Gate:

Solar Windows

Saturday, June 25th, 2011

Windows are, by their nature, solar devices, as the Romans discovered when glass was first used, and as cats and humans know who bask in their warmth. Driven by the world wide energy crisis, science is taking the contribution of window glass to whole new heat.

General Electric singled out Pythagoras Solar this week for a $100,000 award for its innovative embedded solar-cell window design

The idea is that the window lets in less light, while still being transparent, so buildings get needed shade during hot sunny hours, reducing their air conditioning use and making the building more energy-efficient. At the same time, the panels produce solar power, which the building can use for electricity. The company is currently targeting architects and commercial building owners. Reuters

This is not the only idea at work, however:

…the Norweigan solar power company EnSol has patented a thin film solar cell technology designed to be sprayed on to just such surfaces. Unlike traditional silicon-based solar cells, the film is composed of metal nanoparticles embedded in a transparent composite matrix, and operates on a different principle. EnSol is now developing the product with help from the University of Leicester’s Department of Physics and Astronomy.

“One of the key advantages is that it is a transparent thin film that can be coated onto window glass so that windows in buildings can also become power generators,” gizmag

In Queensland a dye infusion method is being developed, also to turn glass into electricity generators.

Treehugger reports on XsunX effort to develop a thin film application that could be used on windows as well as other surfaces. A quick slide show with some tech details is here.

MIT wants to use windows as solar concentrators, gathering the energy along the edges at the frames.

And for a quick discussion of some of the technologies as reflected in stocks, try this.

Some project that virtually the entire world could be powered from the sun in less than 20 years — if the good guys win. One of the brakes on this possibility is that attention is still being turned to “clean” coal. Bad idea, as most of you know. Here’s a recent Union of Concerned Scientists report on how bad.

A Risky Proposition: The Financial Hazards of New Investments in Coal Plants

So no single silver bullet, but lots of smaller ones with some promise. Down with stupidity! Up with innovation!

 

Wind Power News

Tuesday, February 8th, 2011

The government could issue leases for four new East Coast wind farms by year’s end as part of a streamlined approval process designed to quickly identify the nation’s most promising areas for offshore wind energy, theU.S. Department of the Interior said Monday.

The U.S. Department of Energy also said it intends to spend more than $50 million over the next five years to speed development of the farms and help meet President BarackObama’s goal of generating 80 percent of the nation’s electricity from clean energy sources by 2035.

SF Gate

Fossil Fuels – Defeated by War?

Wednesday, October 6th, 2010

Strange as it may sound, the urgency and capacity to rapidly reduce the dependency on fossil fuels, and thereby save future generations from permanent climate wars may be provided by the needs of present wars.

The NY Times is reporting a major push for non-fossil fuel energy sources for the wars going on in Afghanistan and Iraq.

Even as Congress has struggled unsuccessfully to pass an energy bill and many states have put renewable energy on hold because of the recession, the military this year has pushed rapidly forward. After a decade of waging wars in remote corners of the globe where fuel is not readily available, senior commanders have come to see overdependence on fossil fuel as a big liability, and renewable technologies — which have become more reliable and less expensive over the past few years — as providing a potential answer.

Fossil fuel accounts for 30 to 80 percent of the load in convoys into Afghanistan, bringing costs as well as risk. While the military buys gas for just over $1 a gallon, getting that gallon to some forward operating bases costs $400.

Last year, the Navy introduced its first hybrid vessel, a Wasp class amphibious assault ship called the U.S.S. Makin Island, which at speeds under 10 knots runs on electricity rather than on fossil fuel, a shift resulting in greater efficiency that saved 900,000 gallons of fuel on its maiden voyage from Mississippi to San Diego, compared with a conventional ship its size, the Navy said.

The Air Force will have its entire fleet certified to fly on biofuels by 2011 and has already flown test flights using a 50-50 mix of plant-based biofuel and jet fuel; the Navy took its first delivery of fuel made from algae this summer. Biofuels can in theory be produced wherever the raw materials, like plants, are available, and could ultimately be made near battlefields.

Concerns about the military’s dependence on fossil fuels in far-flung battlefields began in 2006 in Iraq, where Richard Zilmer, then a major general and the top American commander in western Iraq, sent an urgent cable to Washington suggesting that renewable technology could prevent loss of life. That request catalyzed new research, but the pressure for immediate results magnified as the military shifted its focus to Afghanistan, a country with little available native fossil fuel and scarce electricity outside cities.

NY Times

Oh how Senator McCain’s military stamped soul must be at war with his climate change denying mouth….

Sahara Solar Power?

Tuesday, September 21st, 2010

We’ve been hearing more and more about desert solar arrays as one, of the many, essential technologies to back off of CO2 production and end our dependence on Middle-East oil.  California, Arizona, China, Australia all have projects going, or in the works.  How about the biggest desert in the world, the Sahara?  Is it feasible to generate enough solar power there, and transmit it to population centers to make it a viable hope?  Some big investors think so.

“The Sahara gets twice as much sunshine annually as most of Europe. The European Union wants to get 20 percent of its electricity from renewable sources within a decade. So why not build solar power plants across North Africa and ship the electricity north via power lines under the Mediterranean?

Over the past year, more than 30 European companies have joined the Desertec Industrial Initiative, a consortium that seeks a $560 billion investment in North African solar and wind installations over the next 40 years. The group is completing a feasibility study and hopes to be building its first power plant by 2013.

A separate group of companies called Transgreen, formed in July, is working on plans for the thousands of miles of high-voltage lines needed. The challenge is immense: Winning agreement from very different countries on two continents to carry out one of the biggest infrastructure projects in history.

Read more at SF Gate:

It’s true there is a lot sunshine in the Sahara.  Is it enough, after transmission loss, the threat of disruption of a few “backbone” transmission lines, the still sticky Euro-Afro relationships to be better than solar panels on every available horizontal surface large cities have to offer?  It is there, after all, the energy has to be, before it is consumed.  Would a million small solar panels be more resistant to disruption — weather, earthquake, switch failure, terror attack– than several large, industrial size plants in the deserts of Libya, Egypt, Algeria?

Do we have a choice, given the speed of approach of climate change and the inability of governing bodies to make decisions?  We may be throwing mud in a fast moving river and anything to hand will be important.

Fresh Squeeze Solar

Wednesday, June 9th, 2010

We usually have to plow deep for good news these days; here’s some just off the vine.

…[a solar power] invention that uses dye squeezed from berries. The dye acts as the chlorophyll in green leaves that allows the “Graetzel cell,” a layer of titanium dioxide nanoparticles, to absorb sunlight.

The invention is cheaper than the standard silicon photovoltaics in conventional solar power cells, making it a cheaper solution to the world’s energy problems, according to the Technology Academy of Finland.

The Graetzel cell can be used to power street lamps.

Read more:

Wind Assisted Ferry Boats

Tuesday, February 16th, 2010

In the pretty cool idea category this week we have a Napa, CA based outfit with an idea for carbon-fiber sails on ferry boats to help cut fuel costs / CO2 release.


“They wouldn’t eliminate the need for an engine.

They could, however, cut each ferry’s fuel use by at least 40 percent, said Gardner, with Wind+Wing Technologies.”

Read more:

But beyond the cool factor is the actuality of companies beginning to take seriously sun, wind, conservation and costs.

In San Francisco, Hornblower Cruises & Events started shuttling tourists to Alcatraz last year aboard its Hornblower Hybrid, which uses solar panels and two small, vertical wind turbines to generate electricity.

Hornblower considered using sails but decided the solar panels and wind turbines would be more useful. Unlike a sail, they provide power even when the ferry isn’t moving, said Cameron Clark, the company’s director of environmental affairs.

“With a ferryboat, you spend the majority of your time sitting at the dock,” he said. “You sit for 30 minutes and sail for 15.”

Together, the panels and wind turbines generate about 5 kilowatts of electricity, enough to run the ship’s electrical systems. When tied up at dock, the engines shut off, saving fuel. Before Hornblower retrofitted the ferry, burned 20 to 26 gallons of diesel per hour, Clark said. Now it burns six.

Read more: