Saturday, 9 January 2016

Solar PV progress

The Journal of Renewable and Sustainable Energy has published a report on the problems of merging large scale PV (photovoltaic) solar energy generation with existing AC (alternating current) distribution systems (like to your home and businesses). Dependence on PV to a large extent causes problems associated with daylight being limited, which is easy to manage (other sources of energy are timed to coped), and sudden changes in the weather - which is more of a problem. Passing cloud can diminish the output from PV cells by more than 50% in a matter of seconds.  http://jrse.aip.org

Solar plant in Lancaster, California

solar PV California
The problem of islanding - PV cells keep generating power even if the grid they supply is turned off - has been solved according to Professor Kempton of the College of Earth, Ocean, and Environment at the University of Delaware. It is a serious problem because generating power that isn't used is dangerous to workers on-site. Kempton is very optimistic about the future of renewable energy, including solar power. In a study published in the Journal of Power Sources, he and his team predicted that a combination of wind power, solar power, and improved batteries and fuel cells could fully power a large electrical grid 99.9 percent of the time by 2030 at costs comparable to today’s electricity expenses. Personally, I think the solution for future energy is the same as most problems. Individuals have to take responsibility for as much as they can: cutting waste and consumerism, generating power where they can, supporting those companies and corporations that act responsibly. Renewable Energy

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