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Showing posts from February, 2017

Challenges of implementing wind energy into the grid

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Wind energy has been a remarkable success story in terms of establishing itself as a mainstream energy resource. Its growth seems certain to continue and that it will be an increasingly valuable source of electricity generation in the future. This should not close our eyes to its deficiencies. There has been a great deal of debate in recent years about various technical aspects of wind energy. New information about the power delivery and environmental parameters of wind power is constantly becoming available and it raises a number of important questions. Demands for power vary greatly during the day and night, and they vary considerably from season to season. In many countries the highest peaks are usually found during cold periods in the winter, but in other countries during summer daylight hours when air conditioners are running. Energy demand also varies by time of day, with peaks typically at the start and end of the working day. At night time the load is lowest, m...

Is wind energy 100% carbon free?

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Wind energy is one of the cleanest sources of electricity generation . However, it’s not entirely carbon-free. Of course, when it comes to electricity generation, wind by all accounts is far less polluting than coal, gas, or oil based plants. However, due to the nature of wind energy and the fact that it is not always available, we still rely on these types of polluting plants to make up for any shortages that may occur when the wind suddenly stops blowing. We call this spinning reserve. To ensure that there is sufficient capacity available to respond rapidly to a sudden increase in electricity demand, or an interruption to supply, some thermal power stations are kept in a condition known as 'spinning reserve'. These plants are burning fuel and are generating electricity but are not running at full load. For example, one of the two 1,000 MW cross channel links importing electricity into the UK from France could fail, a steam turbine could trip out, or a super grid ...