Dr Amy O’Mahoney, Ofgem, United Kingdom Mr Kristian Marr, Ofgem,United Kingdom Shashi van de Graaff, Ofgem, United Kingdom Mr David Hall, Ofgem, United Kingdom In recent years, the generation mix in most electricity markets has been in transition, resulting in larger proportions of variable generation. In GB, wind and solar accounted for 13% and 5% of installed capacity respectively in 2015 , and 11.5% of generation over the same period. This intermittent generation is not always capable of delivering in periods of tightness, and thus contributes considerably less to peak demand. This development in the electricity market has led to changes to how the system is operated. As a result, more flexible thermal plant is now required to run differently than originally intended; wind generation has been shown increase the cycling of existing units (Troy et al., 2010). This relates to additional start-ups, ramping and operation at part load (Denny and O’Malley, 2009; Troy et al., 2010). Analysis of availabilities in other markets has indicated that the availability of CCGTs in GB is below those in comparable markets. Forced breakdown rates are Read more…
Categories: Academic Papers, Electricity and nuclear, Energy economics, Energy security
Tags: energy economics, Power system operation
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