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<p>The responsiveness of Open Cycle Gas Turbines (OCGTs) and Combined Cycle Gas Turbines
(CCGTs) is such that they can be utilised to provide system balancing services at
national or local level, including responding to fluctuations in wind generation.</p><p>The
Department published a study in June 2014 which contains information on the life expectancy
of combined cycle gas turbines1.</p><p>In addition, the Department has also commissioned
two further studies2. The first considers the cost and performance of near-term and
future CCGT plant when operating under different duty cycles to facilitate the increased
level of intermittent renewable generation on the system. The second study considers
the flexibility of gas plant and identifies typical start up times for both open cycle
and combined cycle gas turbines.</p><p><em><strong>[1]</strong></em><em> Coal and
Gas Assumptions, Parsons Brinckerhoff <a href="https://www.gov.uk/government/publications/coal-and-gas-assumptions"
target="_blank">https://www.gov.uk/government/publications/coal-and-gas-assumptions</a>
</em></p><p><em>2</em><em> Currently unpublished – the Department intends to publish
both reports by the end of the year.</em></p><p> </p>
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