WHY MODERN ENERGY FOR ALL IS SO IMPORTANT

Energy is a critical enabler. Every advanced economy has required secure access to modern sources of energy to underpin its development and growing prosperity. In developing countries, access to affordable and reliable energy services is fundamental to reducing poverty and improving health, increasing productivity, enhancing competitiveness and promoting economic growth. This is because it is essential for the provision of clean water, sanitation and healthcare, and provides great benefits to development through the provision of reliable and efficient lighting, heating, cooking, mechanical power, transport and telecommunication services.

cooking

Modern energy services enhance the life of the poor in countless ways. Electricity provides the best and most efficient form of lighting, extending the day and providing extra hours to study or work. Household appliances also require it, opening up new possibilities for communication, entertainment, heating etc. It enables water to be pumped for crops, and foods and medicines to be refrigerated. Modern cooking facilities have the potential to significantly reduce the daily exposure of households (particularly women and children) to noxious cooking fumes – helping to avoid premature deaths caused by indoor air pollution. They can also help remove the burden of spending hours every day travelling long distances to gather fuelwood. And modern energy can directly reduce poverty by raising a poor country’s productivity and extending the quality and range of its products – thereby putting more wages into the pockets of the deprived. For instance, mechanical power can benefit agriculture (ploughing, irrigation) and food processing (otherwise, a laborious and time consuming job), textiles and other manufacturing.

Each year, 4.3 million premature deaths can be attributed to household air pollution resulting from the traditional use of solid fuels, such as fuelwood and charcoal. This figure is much higher than previous estimates, primarily due to the inclusion of new diseases, such as cardiovascular disease and lung cancer.

The international community has long been aware of the close correlation between income levels and access to modern energy: not surprisingly, countries with a large proportion of the population living on an income of less than $2 per day tend to have low electrification rates and a high proportion of the population relying on the traditional use of biomass for cooking. Despite the importance of these matters, billions of people continue to be without basic modern energy services, lacking reliable access to either electricity or clean cooking facilities. This situation is expected to change only a little by 2030 unless more vigorous action is taken.

[source:  http://bit.ly/24YMXmt]

LET THE SUN SHINE ON YOUR ENERGY USE, GREENPEACE URGES RETAILERS

Greenpeace has challenged South Africa’s top five retailers to up their game when it comes to renewable energy. In a report to launch its “Renewable Energy Champions” campaign‚ the environmental activist group says between them, the retailers use enough energy to power 178‚400 homes.

“This campaign provides an opportunity for Pick n Pay‚ Shoprite‚ Spar‚ Woolworths and Massmart to take the lead and show the millions of South Africans who support them that they really care about the future of this country‚” said Greenpeace Africa climate and energy campaigner Penny-Jane Cooke. The report outlines renewable energy investments and commitments from each retailer and ranks them against one another on four key criteria – energy transparency‚ commitment to renewable energy‚ greenhouse gas mitigation and lobbying for clean‚ renewable energy.

Woolworths ranks highest with a score of four out of 10. Woolworths and Pick n Pay have solar installations that contribute a small percentage of renewable energy to their overall operations. Shoprite received the lowest ranking because of its lack of transparency about energy information.

“Ranking the five retailers against one another makes it clear that none of them are doing particularly well when it comes to a commitment to a 100% renewable energy vision‚” said Cooke. “Also‚ none of the retailers are engaged in active lobbying for the barriers to renewable energy to be removed‚ which is an essential step if a 100% vision is to be achieved‚ and this has heavily impacted on their scores.”

The report says Pick and Pay uses the same amount of energy as 65‚000 households‚ Woolworths 55,000 homes and Massmart 53 000.

Cookes said if the retailers committed themselves to renewable energy it would set a good example for the country to follow. “They also need to articulate how they will achieve this vision in the short and long term‚ make the required investments and take the next step by lobbying government to remove the barriers to renewable energy for the benefit of their loyal consumers and the country.” – TMG Digital

ONE HUNDRED BILLION TIMES MORE POWER THAN HUMANITY NEEDS IS POSSIBLE

One hundred billion times more power than humanity currently needs is available right now, out in space. It comes through solar wind, a stream of energized, charged particles flowing outward from the sun. Brooks Harrop, a physicist at Washington State University and Dirk Schulze-Makuch of Washington State’s School of Earth and Environmental Science, think they can capture these particles with a satellite that orbits the sun the same distance Earth does.  Their so-called Dyson-Harrop satellite would have a long copper wire charged by onboard batteries in order to produce a magnetic field perfect for snagging the electrons in the solar wind. The energy from the electrons would be beamed from the satellite via a infrared laser to Earth, since the infrared spectrum would not be affected by the planet’s atmosphere. This Dyson-Harrop satellite holds a few technical problems that researchers are currently trying to fix. It has no protection from space debris, and some of the power could be lost as it’s beamed through Earth’s atmosphere. Plus, finding a way to aim the laser beam across millions of miles of space is no small task. What seems more realistic is to use this satellite in order to power nearby space missions.

[Source: http://bit.ly/1T3bE5r]

COULD WE TURN COAL INTO ELECTRONICS?

MIT scientists have recently described how various types of coal could be used to create thin films with adjustable electrical properties. Eventually, according to the scientists, coal could be used to fashion solar panels, batteries, or various types of electronic devices.

“When you look at coal as a material, and not just as something to burn, the chemistry is extremely rich,” Jeffrey Grossman, an MIT professor in materials science and engineering, advised.  The chemical, electrical, and optical properties of thin films of four different kinds of coal: anthracite, lignite, and two bituminous types.

 

Some naturally occurring coal varieties have a range of electrical conductivity that spans seven orders of magnitude, making them suitable for a wide range of electronic uses — and without the extensive purification and refining that silica, a standard raw material in electronics manufacturing, requires.  For that reason, coal might provide a cheaper alternative!

The researchers demonstrated coal’s potential by using it to make a simple electrical heating device, which could be utilized for jobs such as defrosting car windows or airplane wings.

[Source: http://bit.ly/1T3bE5r]