Although I have a dynohub, I decided to go with just a battery-powered taillight for the rare (I hope) case of riding on roads near dusk or during a dark storm while I look for somewhere to shelter. Similarly, I have a removable, USB-rechargeable headlight for lighting off-road trails and camp sites (allowing me to leave my small headlamp at home). The plan is to use the dynohub to charge one or two power banks, which in turn can recharge my headlight, Edge 25, iPad Mini (offline maps and wifi phone calls), and Nook (reading).

I have been contemplating purchasing a solar panel to use when I set up base camps in southern Utah, and perhaps farther south if I decide to keep going next winter. So far, I haven't been very impressed by reviews of different portable solar panels; most seem to suffer from one or more of the following faults: expensive, heavy, low efficiency, problems charging with intermittent clouds, weatherproofing, reliability, etc.

Of course, I am extremely interested in others experiences with different solar panels in the field.