Energy

Bacteria Batteries

- Adam Clare

Regular readers know that algae is a potential source of energy (and many other things), and in other small-life form news some researchers have found that bacteria can be used as a battery.

WorldChanging has all you want to know about bacteria batteries.

The system’s active ‘ingredients’ are a combination of tiny microbes and CO2. Placed under an electrical current – for example from an off-grid renewable power source such as wind or solar – the microbes convert the CO2 into methane. Professor Bruce Logan, head of the research team, explains that they work in a similar way to the natural process found in marshes.
He suggests that the initial carbon dioxide needed for the chemical reaction could even come from industrial sources: “CO2 is soluble in water, so the gas stream could be bubbled or transferred” in pipes from factories, for example. The ‘battery’ is designed to work as a closed loop, capturing and reusing the CO2 that’s released when the methane is burned.

Work Out Your Will Power for More Will Power

- Adam Clare

You read that odd title right! Researchers at McMaster University in Hamilton, Ontario have discovered that will power is just like any muscle – the more you use the stronger it gets!

You can read more about the research here.

Researchers also found that participants who had done the willpower-busting Stroop test were more likely to skip workouts they had previously scheduled.

Doing the dishes or avoiding biting your nails may require a lot of willpower, but that shouldn’t be an excuse not to work out, said Kathleen Martin Ginis, an associate professor of kinesiology at McMaster and lead author of the study.

She said if you plan a regular exercise routine and don’t have to think about details such as duration, you’re more likely to follow through.

You can also build up willpower by regularly challenging yourself to tasks that test your self-control.

Solar Tower Provides Plenty of Power

- Adam Clare 1 Comment

Solar power continues to prove to the world that the sustainable energy choice is a good and efficient source of electricity generation. Solar towers that rely on mirrors aimed at the tower to produce heat are a great way to spin a turbine to provide power for a lot of homes, I don’t understand why places with lots of sun and a lot of land don’t use more of these types of power plants. I’m looking at you Australia.

Read more about concentrated solar towers.

UBS Wealth Management, moreover, is predicting that the relatively small market for concentrated solar power tends to expand, with projected growth of almost 20 gigawatts in new capacity over the next decade. UBS analysts Gianrento Gamboni and Christoph Hugi, refers to the new projects in the United States and Spain as they say “After a long period of stagnation, the market is evolving more dynamically.”

What is a solar power tower?
One square kilometer of land holds the capacity – depending on the specifities of location – to generate as much as 100 gigawatt hours (GWh) of electricity per year through solar thermal technology. To make it clear, this amount is enough to run 50,000 residents.

One option to produce this energy is the solar power tower, which is a type of solar thermal plant that uses a tower to receive the sunlight, focused upon it via an array of flat, movable mirrors (ie. heliostats). These focused rays heats the water and the steam produced powers a turbine. As you see, no pollutants are emitted in producing the electricity.

Today liquid sodium is commonly used instead of water to store the energy during brief interruptions in sunlight or in night time.

Nanosolar Takes Solar Power to the Next Level

- Adam Clare 8 Comments

A relatively new startup called Nanosolar has announced that they have $4 billion in contracts to sell their solar panels that produce $1 per watt. That is a low enough price point to take on those awful fossil fuels.

The key to their success is how they propose electric utilities make use of their technology. You can read all about it in Wired.

Two big announcements marked its coming out party: The company has $4 billion in contracts and can make money selling its products for $1 per watt of a panel’s capacity. That’s cheap enough to compete with fossil fuels in markets across the world.

Specifically, the company’s management thinks it can help utilities avoid the difficulties of getting big coal and nuclear power plants built by offering the option to build small solar farms they can set up close to cities.

“Cost-efficient solar panels such as ours can be deployed in 2- to 20-megawatt municipal solar power plants that feed peak power directly into the local distribution without requiring the expense of transmission and with a plant deployment time as short as six months,” said Nanosolar CEO Martin Roscheisen in an e-mail to Wired.com. “Coal or nuclear can’t do that, can’t do it as cost efficient and can’t do it as rapidly deployable.”

Thin-film solar has been a major focus of U.S. alternative energy research and development efforts since the early 1980s because it was seen as a true “breakthrough” solar technology. Silicon cells are easy to manufacture, dependable and efficient, but some researchers viewed them as inherently limited. As they are currently produced, they require a lot more silicon than thin-film solar cells. They might reach efficiency levels of over 40 percent, but they’d never compete with fossil fuel energy sources, even with carbon taxes.

Thin-film solar was different. On the one hand, it was definitely harder to make efficient cells. However, it allowed researchers to dream of printing semiconducting chemicals onto a metal sheet and having it convert photons into electricity. Thin-film cells seemed like they’d be perfect for the applications researchers imagined like “solar shingles” for building-integrated solar installations.

Ontario Cuts Back on Coal

- Adam Clare

The CBC is reporting that Ontario will close four coal power plants. Previously, the government had to readjust its targeted closure of all coal plants to 2014, but it’s good to see that coal plants are closing down regardless.

OPG will close two of eight coal-burning units at its Nanticoke station near Simcoe and two of four units at its Lambton plant near Sarnia by October 2010, Smitherman said at a news conference in Toronto on Thursday.

The utility also closed Toronto’s Lakeview Generating Station in 2005. Once the next four units are taken off-line, Ontario will have reduced its coal-burning capacity by 40 per cent.

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