Have You Ever Thought Of Going Solar with your Cooking?

It is a beautiful sunny day here in Seattle which turned my thoughts to how we can harness the power of the sun for our daily lives. I itch to experiment with solar cookers and am looking forward to experiments in this and other energy efficient ways of preparing my food. Would love to hear from those who have experimented already. Here are some great videos I found on this topic.

I loved this one on using a parabolic mirror for cooking a turkey burger. There are similar videos available on how to cook ceese sandwiches and in fact anything else that you might want to grill.

And this one on how to build a solar generator is both intriguing and appealing to me.

The one that most touched me and in fact brought tears to my eyes is this one. It is amazing to think that rape and violence against women could be reduced by solar cooking. Solar cooking can bring peace and dignity to women’s lives. What impact I wonder could our own creativity provide for people at the margins?

African Huts Glow With Renewable Power

This is a beautiful story.  Having worked in Africa I am very aware of how often those at the margins struggle to provide the basics of modern life that we so take for granted

As small-scale renewable energy becomes cheaper, more reliable and more efficient, it is providing the first drops of modern power to people who live far from slow-growing electricity grids and fuel pipelines in developing countries. Although dwarfed by the big renewable energy projects that many industrialized countries are embracing to rein in greenhouse gas emissions, these tiny systems are playing an epic, transformative role.

Since Ms. Ruto hooked up the system, her teenagers’ grades have improved because they have light for studying. The toddlers no longer risk burns from the smoky kerosene lamp. And each month, she saves $15 in kerosene and battery costs — and the $20 she used to spend on travel.

Read the entire article

 

Good news and bad news on solar energy

First the bad news
Solar-panel manufacturers dumping toxic waste in China Solar panels may look bright and shiny, but they have a dark underbelly: production of polysilicon for panels gives off a highly toxic byproduct called silicon tetrachloride. In China, where factories are rushing to alleviate a polysilicon shortage that’s cramping the global solar-panel industry, the bubbly white liquid is often just dumped in nearby villages. “The land where you dump or bury [silicon tetrachloride] will be infertile. No grass or trees will grow in the place,” says a material-sciences expert at Hebei Industrial University. “It is poisonous, it is polluting. Human beings can never touch it.” While silicon tetrachloride can be recycled — with significant investment cost, time, and energy consumption — many Chinese factories are cutting corners, and environmental agencies seem to largely be looking the other way.source: The Washington Post

Now the good news
Startup company makes thin-film solar cells via new process

Solar company Konarka has announced that it successfully developed a new process to manufacture solar cells that could lead to a range of new solar-powered products and applications. The solar cells are made without silicon and are manufactured into a thin, light film via an inkjet printer, which means they don’t need to be born in a clean room like traditional silicon cells. One drawback to the new cells is their efficiency: while regular silicon solar cells achieve efficiencies of up to 20 percent, the new cells are only 5 percent efficient, but Konarka says they’re likely to be less expensive and much more dynamic. They can be incorporated into plastics and come in a range of different colors, including transparent.
Source: Wired,