Tawanai

As reported by Stanford News, a new solar energy conversion process discovered by Stanford engineers could revamp solar power production. This
process simultaneously combines the light and heat of solar radiation to generate electricity could offer more than double the efficiency of existing solar cell technology, say the Stanford engineers who discovered it and proved that it works. The process, called “photon enhanced thermionic emission,” or PETE, could reduce the costs of solar energy production enough for it to compete with oil as an energy source.

Clean Technology, Energy, Renewable Energy, Solar, Technology, research

Via Technology Review

Biomass can be converted to fuels via a process called gasification, which uses high temperatures to break feedstock down into carbon monoxide and hydrogen, which can then be made into various fuels, including hydrocarbons. But there’s a major drawback–about half of the carbon in the biomass gets converted to carbon dioxide rather than into carbon monoxide, a precursor for fuels. Now researchers in University of Minnesota and the University of Massachusetts, Amherst, have developed a method for gasifying biomass that converts all of the carbon into carbon monoxide.

In the new approach, the researchers gasify biomass in the presence of precisely controlled amounts of carbon dioxide and methane, the main component of natural gas, in a special catalytic reactor that the researchers developed. When they did this, all of the carbon in both the biomass and the methane was converted to carbon monoxide. “In the chemical industry, even a few percent improvement makes a big impact. The increase from 50 percent to 100 percent is profound,” says Dionisios Vlachos, the director of the Catalysis Center for Energy Innovation at the University of Delaware.

To increase the yields from gasification, researchers at the University of Minnesota and UMass Amherst added carbon dioxide, which promotes a well-known reaction: the carbon dioxide combines with hydrogen to produce water and carbon monoxide. But adding carbon dioxide isn’t enough to convert all of the carbon in biomass into carbon monoxide instead of carbon dioxide. It’s also necessary to add hydrogen, which helps in part by providing the energy needed to drive the reactions. It’s long been possible to do each of these steps in separate chemical reactors. The researchers’ innovation was to find a way to combine all of these reactions in a single reactor, the key to making the process affordable.

Clean Technology, Consumers, Energy

FFC Energy Limited (FFCEL) has finalised contracts of Engineering, Procurement and Construction (EPC) and Operation and Maintenance (O&M) with Nordex of Germany for development of 50 Megawatt Wind Power Project at Jhimpir, Sindh.

FFCEL is a fully owned subsidiary of Fauji Fertiliser Company Limited (FFC), while Nordex AG is a leading manufacturer of Wind Turbines in the world. Founder and Chief Sales Officer of Nordex Carsten Pedersen and Lieutenant General Malik Arif Hayat (Retd) CE & MD, FFC & FFCEL exchanged the contract documents, a press release issued here said.

Arif Alauddin, CEO Alternative Energy Development Board (AEDB) Pakistan was also present at the ceremony. FFCEL shall soon be filing Tariff Petition with NEPRA for the project. The construction of the project, shall begin after Tariff approval from National Electric Power Regulatory Authority (Nepra) and signing of Energy Purchase Agreement between FFCEL and Central Power Purchase Agency. The project, once operational, shall address electricity shortage in the country and will also help the economy by providing cleaner, sustainable and economical electricity to the nation.

FFC has further planned to develop and establish more renewable energy projects in Pakistan to contribute towards fulfilling Pakistan’s electricity needs through captive renewable resources. To that end, FFC has already obtained Letter of Intent (LOI) of additional 100 MW Wind Power Projects from (AEDB)

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Clean Technology, Energy, Green, Infrastructure, Investment, Pakistan, Renewable Energy, Wind

The conflict between proponents of wind energy and those who oppose it is heating up in Texas. The growth of wind power has attracted powerful critics: the owners of natural-gas power plants.

The gas and wind factions have been clashing over the state’s operating rules for the past several months. The gas people say the playing field is tilted in wind’s favor; wind accuses gas of trying to snuff out the nascent wind energy sector.

The success of wind power in Texas has come at the expense of natural gas. If the wind build-out continues, by 2013 the amount of gas consumed to make electricity could fall by 18.5%, as gas plants sit idle for longer, according to Tudor Pickering & Holt, a Houston-based energy investment bank.

At the heart of the battle is a fight over the vicissitudes of wind itself. The wind industry argues that since it can’t control when the wind blows, it shouldn’t be held to the same rules that require everyone else to make payments when they fail to deliver promised power. The natural-gas generators say everyone should operate under the same rules, and lament that wind’s success is merely coming at the expense of another relatively clean energy source.

Similar fights are shaping up elsewhere. In the Midwest and Wyoming, fossil-fuel companies are questioning whether wind is getting too many advantages from government.

The lure of harnessing the wind has attracted big players. Wind-farm developers include NextEra Resources, a division of FPL Group Inc., the giant Florida-based power company, and E.On AG, the huge German power company. General Electric Co. is a major manufacturer of 400-foot-tall wind turbines and United Technologies Corp. recently entered the field.

Via: WSJ

Clean Technology, Natural Gas, Wind

This video explains how Cisco Building Technology works.

Buildings, Clean Technology, Energy

Via TelecomPk.net

In 2008 I wrote about VNL and its efforts to create low power base stations. Here’s an update about their work which appeared at Technology Review.

An Indian telecom company is deploying simple cell phone base stations that need as little as 50 watts of solar-provided power. It will soon announce plans to sell the equipment in Africa, expanding cell phone access to new ranks of rural villagers who live far from electricity supplies.

Over the past year, VNL, based in Haryana, India, has reengineered the traditional technology of the dominant cellular standard, called GSM, in order to create base stations that only require between 50 and 150 watts of power, supplied by a solar-charged battery. The components can be assembled and booted up by two people and mounted on a rooftop in six hours.

One such station–dubbed a “village station”–can handle hundreds of users. Groups of such village stations feed signals to a required larger VNL base station within five kilometers. In turn that larger station, which is also solar-powered, relays signals to the main network. The village station can turn a profit even if customers spend on average only $2 a month on the service, instead of the $6 required to make traditional systems cost-effective, the company says.

“We’ve scaled down the cost, the energy, and the equipment so that almost anybody can deploy it,” says Rajiv Mehrotra, VNL’s CEO. “It lends itself to many business models that can serve the bottom of the pyramid,” a reference to the roughly 1.5 billion rural people who do not have access to electricity grids around the world.

To date, some 50 VNL base stations have been installed in the Indian state of Rajasthan, introducing thousands of people to cell phone service for the first time. An African rollout is imminent, the company says, without elaborating. The initial batch of 50 stations support voice and data transmission–but not initially text-messaging, a decision mainly based on the fact that many new users may not be able to read or write.

Besides enabling basic communication, cell phones can provide enormous financial opportunities for rural people, especially if those people adopt services that provide banking and lending via cell phone. More than half of India’s 1.1 billion people lack any access to basic financial services, and instead pay usurious rates to local loan sharks. Furthermore, while microlending can lift people from poverty, only about 150 million people worldwide use such services. Expanded cell networks, together with banking programs geared to the rural poor, could change all of that.

Clean Technology, Consumers, Innovation

Associate Press of Pakistan reports that the Japanese government has agreed to provide a grant of Yen 480,000,000 (US $5.4 million) to Pakistan for “Introduction of Clean Energy by Solar Electricity Generation System” programme. An agreement to this effect was signed here on Thursday by Secretary, Economic Affairs Division, Sibtain Fazal Halim and Ambassador of Japan in Pakistan, Chihiro Atsumi on behalf of their respective governments.

Among others, Head of Japan International Co-operation Agency (JICA), also witnessed the signing ceremony. Under the Clean Energy Initiative, two on-grid solar power generation systems (100 KW each) will be installed under grant-aid through JICA, one at Pakistan Engineering Council (PEC) and other at roof of Planning Commission’s building.

The project will promote clean energy utilisation and will help achieve emission reduction by installing the new system that would be connected to the national grid. The system is expected to reduce the gas emission, by replacing the part of electric power generated by fossil fuel and contribute to the climate change policy of Pakistan.

This project is first of its kind in the country, which would set precedent as a role model of defining procedures and strategy at the level for on-grid solar power generation. It is expected to become an effective measure to overcome the energy shortage and a motive for utilising solar power, for which there is big scope with relatively less investment.

On the occasion Chihiro Atsumi said that Japan was concerned about the challenges caused by the climate change in Pakistan which has been resulting in receding glaciers and lack of rain fall. During the Copenhagen conference held last month, Japan has committed to reduce the carbon emission, and Pakistan and Japan would try to utilise the solar energy to achieve this goal.

On the occasion, Secretary EAD said that Government of Japan has deep and diversified relations with Pakistan adding that Japan was the biggest donor partner of Pakistan and continued its support in education, health, energy, environment and disaster management.

Japan has also helped in capacity building and institution building in Pakistan, the Secretary added. Speaking on the occasion, Pakistan Engineering Council, Chairperson Rukhsana Zuberi expressed the hope that the launch of this project and the awareness created through media could lead to the solutions of energy problems. This system is economically viable and will also help in income generation, she added.

Clean Technology, Consumers, Energy, Investment, Solar Japan, JICA, Pakistan Engineering Council

Since 2002, venture-capital investments in cleantech world-wide have soared from about $1 billion to an estimated $5 billion to $6 billion this year, according to the Cleantech Group, a San Francisco market-research firm. After experiencing one of its first back-to-back quarterly declines in March, venture funding for cleantech, much of it based in California’s Silicon Valley, has resumed its climb.

In the U.S., the lack of a strong Copenhagen deal may set back some of these investments, already hurt by falling oil prices. But the Obama administration still plans to use the Environmental Protection Agency to clamp down on the nation’s greenhouse-gas emissions, and the Energy Department remains committed to spending billions in public funds to jump-start alternative-energy technology. In the European Union, companies still have to comply with laws that require member nations to reduce emissions collectively to 20% below their 1990 levels by 2020, despite the summit’s lack of binding targets.

More from WSJ:

On a smaller scale, California is pursuing a program to garner a third of its electricity from renewable sources by 2020, more than double current levels. Most Northeastern states are expected to cut carbon-dioxide emissions, based on regional targets.

The adoption of renewable-energy standards, completed or under way in many states, should boost demand for technologies that make electrical grids more efficient, says Dan Adler, president of the nonprofit California Clean Energy Fund, set up by the state to help spur cleantech investment. Such efforts have fueled the growth of Silver Spring Networks Inc., a Redwood City, Calif., grid-technology provider, which has tripled its work force since 2008 to about 450.

“From our standpoint, we have been cheerleading Copenhagen,” says Eric Dresselhuys, the company’s executive vice president, “but it’s not a direct impact on this business.”

Many U.S. states will continue to shift toward lower-carbon fuels, says Michael Peevey, president of the California Public Utilities Commission, which regulates investor-owned electric, gas and water utilities in the state. California is “not going to turn back,” he says.

Officials at Iberdrola, the Spanish power company and the world’s biggest renewable-energy company say they are evaluating investments based on local policies, such as renewable-energy standards in states like Texas.

Some businesses, worried about a patchwork of federal and state regulation, are still pushing for Congress to enact a nationwide system for cutting carbon-dioxide emissions. But the prospects for congressional action in the 2010 election year look dim.

China, spurred in part by its desire to reduce dependence on foreign oil, remains committed to a sweeping energy efficiency program that calls for cutting carbon intensity, a measure of emissions relative to the size of the economy, by 40% to 45% from 2005 levels by 2020. That means government support for alternative energies, and for Chinese companies in that field, is likely to continue to grow.

Gao Jifan, chief executive of Trina Solar Ltd., a Chinese maker of solar panels, says the continuous cost reductions being achieved by solar-panel producers are making the technology more affordable. “So the outlook for its development is unstoppable,” he said in a statement.

Clean Technology, Energy, Innovation, Renewable Energy

The energy crisis in Pakistan is changing the way telecom industry consumes and manages power. In a welcome move, Universal Service Fund has made it mandatory for the telecom operators in rural areas, where USF is providing subsidy, to power their infrastructure through renewable energy sources. This not only makes sense financially but also from an environmental perspective. Telenor and Warid had already taken some initiatives along these lines. Here’s the statement from USF.

It has been observed that commercial power has not reached most of the areas where USF is running rural telecom projects, which proves to be a barrier to provide smooth uninterrupted telecom service. Even where commercial power infrastructure is available, the availability of power is extremely limited. As a result, the telecom operators have to rely on diesel generators. But not only there is the cost of diesel, the re-fueling at these sites is also a big and expensive hassle. At the same time, there is also a great need for cross-cutting operational expenses for maintenance of remote and hard-to-reach remote sites. Therefore, it was decided in the meeting that operators will bid for all future infrastructure in unserved areas with renewable energy solutions.

This decision will play an important role in reducing the energy costs and is also a small contribution towards dealing with the energy crisis in Pakistan. Moreover, this initiative will also help reduce carbon content in the atmosphere.

Wind, solar and other forms of non-fossil fuel energy, such as hydro and geothermal can contribute in this effort. Thus hundreds of renewable energy solutions will get deployed which will not only reduce Green House Gasses (mainly CO2) emissions in the atmosphere, it will also help bring down prices of solar and wind power solutions in the country.

Clean Technology, Energy, Green, IT, Solar, Wind

For decades researchers have investigated a theoretical means to double the power output of solar cells–by making use of so-called “hot electrons.” Now researchers at Boston College have provided new experimental evidence that the theory will work. They built solar cells that get a power boost from high-energy photons. This boost, the researchers say, is the result of extracting hot electrons.

The results are a step toward solar cells that break conventional efficiency limits. Because of the way ordinary solar cells work, they can, in theory, convert at most about 35 percent of the energy in sunlight into electricity, wasting the rest as heat. Making use of hot electrons could result in efficiencies as high as 67 percent, says Matthew Beard, a senior scientist at the National Renewable Energy Laboratory in Golden, CO, who was not involved in the current work. Doubling the efficiency of solar cells could cut the cost of solar power in half.

Via: Technology Review

Clean Technology, Electronics, Solar