http://nseej.com/رسائل/-141475/ It's also creating a gradual increase in solar efficiency, with expertise like skinny-movie panels from US outfit First Solar and ultra-environment friendly modules from Sharp (see the chart above). The economics may also improve when battery tech ramps up, so that solar power can be stored to be used at night time. Fri, 20 Jun 2014 13:14:40 UTC en