Domestically, Davey focused on increasing competition in the energy market by removing barriers to entry for smaller companies, and streamlining the customer switching process, declaring in 2013 that “competition works.” He also approved the construction of Hinkley Point C nuclear power station. Abroad, Davey promoted investment in the British energy sector by foreign companies including from Japan, South Korea, and China, making significant diplomatic trips to the latter two countries in order to highlight investment opportunities. In October 2013 during an BBC Newsnight segment on energy bills, in a controversy that was termed by some media as "Jumpergate", Davey was asked by presenter Jeremy Paxman on whether or not he wore a jumper (to stay warm) at home, to which Davey replied that he did but stressed that competition and energy efficiency were the solutions to lowering energy bills. The following day, various media outlets reported that Davey had advised for people to wear jumpers at home to save on energy bills, although he had not. The controversy then spread when Prime Minister David Cameron's official spokesman told a reporter that people may wish to "consider" advice by charities to wrap up warmly, leading to media outlets reporting that Number 10 was also suggesting wearing jumpers to cut energy bills, with the supposed suggestion being seized upon by the opposition Labour Party. Number 10 later issued a statement rebutting the media reports. In April 2014, Davey called for the G7 to begin reduction of dependency on Russian energy following the 2014 Ukrainian revolution and commencement of the War in Donbass. Davey argued the benefits of investment in onshore wind energy from companies such as Siemens was a key part of the push to reduce dependence on Russian energy, while “more diversified supplies of gas” including from the U.S. and domestic shale gas would also help. In May 2014 at a meeting in Rome, G7 energy ministers including Davey agreed formally to a process for reducing dependency on Russian energy, “Putin has crossed a line” Davey declared. Throughout and after the Cameron–Clegg coalition, Davey's ministerial career came under scrutiny from political figures and the media. On the Right, Conservatives Nigel Lawson and Peter Lilley were critical of Davey's environmental stances, while journalist and climate change denier Christopher Booker questioned his policy on wind turbines, and he was lampooned by "The Telegraph" sketch-writer Michael Deacon. He was also criticised by Left-wing figures such as Green MP Caroline Lucas over for his support of fracking, and by Labour Leader Ed Miliband for Davey's warning that Labour's price control policy would cause blackouts.