Nicholas Hylton of Imperial College London in the UK says: ‘What they have demonstrated is a new method of converting light into electrical energy. It has the potential to find a wide range of applications in a new class of opto-electronic devices, particularly if a technique can be developed to extract the energy as an electrical current.’ Sep 19, 2019 · Total electrical generation capacity (gigawatts) 2010 2012 2014 2016 25 0 50 75 100 Onshore wind power Utility-scale solar panels Cost of energy ($/megawatt hour) 0 2010 2012 2014 2016 100 200 300 ...