It almost certainly is, similar to Vodafone's solar charging umbrellas that they took to festivals[1]. Having seen the creator talking about it they're entirely

It almost certainly is, similar to Vodafone's solar charging umbrellas that they took to festivals[1]. Having seen the creator talking about it they're entirely unviable commercially, and were incredibly fragile. [1] http://www.engadget.com/2012/06/13/vodafone-booster-brolly/ http://www.engadget.com/2012/06/13/vodafone-booster-brolly/