solar water heaters
November 11, 2010
This is the thermo-chemical approach, in which solar energy is captured in the configuration of certain molecules, which can then release the energy on demand to […]
November 9, 2010
23 year old Emily Cummins has invented a solar-powered fridge currently being used in Africa. It uses zero electricity to keep the contents at 43 degrees. […]
November 8, 2010
What you need to know about solar power, electric cars and robotics. Elections come and go, yet the economy is still struggling. Campaign promises and the […]
November 7, 2010
We’ve had an email from Su: I do like to tax the minds of all who read these sites, not intentionally, but in a ‘why don’t […]
November 6, 2010
Scientists have long known that large volcanic explosions can affect the weather by spewing particles that block solar energy and cool the air. Some suspect that […]
November 6, 2010
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 […]
November 4, 2010
…as It Did 20,000 Years Ago Universitat Autònoma de Barcelona scientists have researched how ocean currents in the Atlantic were affected by climate change in the […]
November 3, 2010
South African hydropower plant developer, owner and operator NuPlanet has been granted a generation licence to build a 5-MW greenfield hydropower plant at the Mutirikwi dam, […]
November 1, 2010
Simple steps to see the world while polluting less It’s a paradox of modern travel: The beauty of the natural world motivates many a globetrotter to […]
October 30, 2010
Yes, It’s the military again, this time blazing the trail for alternative energy. It’s rushing to deploy solar energy equip on the battlefields of Afghanistan. No […]
October 28, 2010
For thousands of years, nomadic herdsmen have roamed the harsh, semi-arid lowlands that stretch across 80 percent of Kenya and 60 percent of Ethiopia. Descendants of […]
October 26, 2010
South African power utility Eskom calculates that South Africa’s electricity shortfall could peak in 2012 at 9 TWh, the equivalent of 1 000 MW, having confirmed […]
October 25, 2010
Simply fencing off streams and drainage ditches so farm animals can’t deposit manure in and around them could cut levels of faecal pollution dramatically, according to […]
October 21, 2010
1. How do I make a rainwater harvesting system pay for itself (amortize its cost) and why should I not just harvest rainwater for irrigation. Simply […]
October 16, 2010
Solar power is arguably the cleanest energy source there is. But it’s also relatively inefficient—arguable from a technical standpoint, perhaps, but certainly not from a practical […]
October 13, 2010
The use of the “lesser-known” renewable energy, biomass gasification, could greatly assist the development of private power in South Africa, which is likely to face a […]
October 10, 2010
Here are 10 ways you can reduce your energy usage and costs without sacrificing comfort or building functionality. 1. Assess how your building consumes and wastes […]
October 8, 2010
The concept of sustainability has been sustaining the earth for as long as it’s been around – that’s why this planet is still here. Yet there […]