Recent news that the Prince of Wales had been granted permission to install 32 solar photovoltaic panels on the south-east roof of Clarence House, his central London residence, and which has been a royal home for 170 years, gives another tremendous confidence boost to the UK's embrace of renewable technology.Despite of recession and austerity budget cuts, increasing numbers of men and women are entering the trade skills industry to train to become an electrician, and this now must take on board the use and installation of green energy appliances. Today's trainee electrician is to be involved in the UK's rolling out of replacement energy sources, the most important being Solar PV and Heat Pumps, in order to help meet the government's commitment to lowering the country's carbon emissions by 2020 and beyond.The installation of solar PV panels is the latest in a line of renewable energy projects enacted by the Prince of Wales household, which not only aims to cut carbon emissions, but also raise the profile of green technology. Clarence House has previously installed energy efficient boilers and lights, while other royal properties possess wood chip boilers.Approval of the planning application by Westminster Council, means the solar panels, which will be hidden from view by the high parapet balustrade on the Grade I listed building, are expected to produce around 4,000 kilowatt hours of 'green' electricity a year - equivalent to the household average in the capital.Coincidentally, approval of the Prince's solar PV scheme was announced alongside energy regulator, Ofgem, revealing that a record number of homeowners had installed solar panels during the past month. As a result of the introduction of the Government's "feed-in tariff" scheme, which pays PV system owners for the green energy they generate, 2,257 solar panels were fitted, up from?