To GreenTech Media : ” SunPower just announced their newest solar panels with total area efficiencies of more than 20 percent. The 96-cell solar panels use SunPower’s 22.4 percent efficient cells .”
To Ecogeek : ” Researchers at Empa (the Swiss national research laboratory) have achieved a new record in thin-film solar cell efficiency. (…) these cells have achieved an energy conversion efficiency of 18.7 percent.”
Meanwhile, prices decreased by 17 percent in the five past months alone as the Financial Times noted. All these news are great and I believe this is only the beginning, so stay tuned !