<p>Ofgem publish annual summary information on the number of levy exemption certificates issued by country of generation and by renewable technology type. Information for the period April 2009 to March 2015 is set out in two reports available on the Ofgem website at:</p><p><a href="https://www.ofgem.gov.uk/publications-and-updates/summary-renewable-levy-exemption-certificates-lecs-april-2009-march-2014" target="_blank">https://www.ofgem.gov.uk/publications-and-updates/summary-renewable-levy-exemption-certificates-lecs-april-2009-march-2014</a>;</p><p><a href="https://www.ofgem.gov.uk/publications-and-updates/summary-renewable-levy-exemption-certificates-lecs-april-2014-march-2015" target="_blank">https://www.ofgem.gov.uk/publications-and-updates/summary-renewable-levy-exemption-certificates-lecs-april-2014-march-2015</a>.</p>