Articles About Renewable Energy

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Renewable Energy from Space

By: David Saharkhiz

Space-Based Renewable Energy: Solar energy directly from the source? Clean, non-polluting, nearly limitless, and renewable energy - sound too good to be true? In the coming decades, this pipedream may just become a reality. Solar panels on Earth are a clean and moderately efficient means of collecting solar power. But atmospheric turbulence, combined with localized weather and climatic factors, make earth-based solar powers only efficent to a degree. A space-based solar station would function at optimal capacity nearly all of the time, and would simply have to beam the energy to earth via radio waves to harvest clean, renewable energy at efficiency ratings previously unheard of. Several challenges must first be addressed, however. First, it's appearant that the cost of launching and assembling the materials in space is going to be an issue for the profitability for the company that undertakes this momentous task. Advances in launch technology combined with the impending privitization of the space-faring industry should reduce launch costs per kilogram by as much as a factor of 5 in the coming century, and a large-scale solar power plant in space could become a reality. The second major consideration is the cost of assembling such a structure in space, but this can be addressed by advancements in robotics and teleoperation, which could make a the large-scale construction of a kilometer-sized object in space a much more economically feasible undertaking. Time will tell if such a project ever gets off the ground, but we can only hope that as our oil resources dwindle and technology advances, this option will become more affordable and the world can benefit from a clean, steady stream of energy directly from the sun.

FACT FILE: Carbon capture and storage Norway was the first country to operate an industrial-scale carbon capture and storage storage project at the Sleipner oilfield, dating from 1996. and operated by Statoil. Carbon dioxide is stripped from natural gas with amine solvents is deposited in a saline formation. The carbon dioxide is a waste product of the field's natural gas production and the gas contains more (9% CO2) than is allowed into the natural gas distribution network. Storing it underground avoids this problem and saves Statoil hundreds of millions of euro in carbon taxes. Sleipner stores about one million tonnes CO2 a year.

David Saharkhiz is a contributor to various website publications related to solar panels.