There are more than 4 billion mobile connections worldwide. Over the coming years, many more millions of people at the “base of the economic pyramid” are expected to acquire mobile phones, greatly benefiting their lives, business activities and access to information. However, most of these new subscribers will not have direct access to electricity. This makes it more challenging and expensive for them to charge their mobile phone, not to mention to power the myriad of other daily functions for which electricity is important such as lighting, cooking and refrigeration.