LONDON–(BUSINESS WIRE)–British solar heat tech disrupter Naked Energy announces its expansion to Spain and Portugal with a new office in Madrid. Naked Energy’s solar heat technology converts solar energy into hot water, as opposed to conventional solar photovoltaic (PV) panels used to solely generate electricity. The Virtu collectors can be up to ten times more efficient than traditional solar PV. Its VirtuHOT collectors generate clean heat up to 120 °C , while its VirtuPVT collectors combine