Tag Archives | clean energy

Natural Gas: It’s Not Easy Being Green

Tapping natural gas in Texas. The green bona fides of the energy source are coming under increased scrutiny. Natural gas has long enjoyed a clean-and-green reputation — at least in comparison with coal, its brethren fossil fuel and most immediate substitute in the electricity-generation game. And of course, T. Boone Pickens and others would like […]

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The Top Cleantech Countries

Just a handful of nations are leading the way in the development of green energy and environmental technologies. Where are advances being made in clean energy technology? Judging by patent awards, only in a very small number of countries.

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Standard Bank head office gets R2,3m solar hybrid water-heating system

Banking group Standard Bank has invested R2,3-million in a hybrid solar water heating and heat pump system at the company’s head office in Johannesburg, as it moves to increase energy efficiency and reduce its carbon footprint. The new R2,3-million system, installed by Kayema Energy Solutions, was expected to save nearly R1-million a year in energy […]

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World’s First Human-powered Ornithopter

The Snowbird Human-Powered Ornithopter was designed and constructed by a team of students from the University of Toronto. On August 2nd 2010 it sustained both altitude and airspeed for 19.3 seconds, becoming the world’s first successful human-powered ornithopter. These human-powered technologies are sure to improve; perhaps one day human-powered flying contraptions will be as common […]

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South Africa’s first hydrogen bike rolled out

South Africa’s rural communities may soon have access to a new, greener form of transport, following the recent launch of the country’s first hydrogen-powered bicycle. Minister of Science and Technology Naledi Pandor unveiled the vehicle at a technology conference earlier in August 2010 at the Kwa-Maritane Bush Lodge in the North West province.

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Eskom signs IEA clean coal agreement on behalf of SA

Power utility Eskom would now represent South Africa on the International Energy Agency’s (IEA’s) Clean Coal Centre, which is a subsidiary of the Organisation for Economic Cooperation and Development (OECD). Eskom signed a contracting partnership with the IEA, which upgraded Eskom’s existing sponsor membership to the organisation, to that of national contracting party status. In […]

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Countdown to “Free” Renewable Energy from Sewage Begins

They prefer to call it wastewater, but the bottom line is that researchers at the University of Nevada are close to commercializing a process for generating renewable energy from sewage sludge.  The energy could be used to run equipment at the plants, which is a big deal because sewage treatment plants (okay, so wastewater treatment […]

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Airborne Wind Turbines!

Yes, the day is not far off when reaching for sky is the new motto for generating cost-effective renewable energy. Initially it was considered to be technically non-viable to tap high-altitude winds. But today, technically-advanced materials and innovative computer know-how are giving new life to this scheme with innovative autonomous aerial structures using wind energy […]

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Greenwashing Hydropower

Big dams have a serious record of social and environmental destruction, and there are many alternatives. So why are they still being built? Big dams have frequently imposed high social and environmental costs and long term economic trade offs, such as lost fisheries and tourism potential and flooded agricultural and forest land. According to the […]

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