According to analysts we are waiting for the market growth of accessories with solar panels. Until recently, these devices were not popular because of the high prices, inconvenient form factor and limited functionality. Besides, it takes a long time for charging from solar energy.
Today the situation has changed. "Sunny" of chargers produced more and more, the cost will not exceed $ 100, and they can be purchased at any major retailer in the United States. Demand is growing. For example, the company Goal Zero on the results of 2013 is waiting for revenue growth in the 2-fold to $ 60 million.