People are packing their backpacks to head off to school, and so it’s a good time to talk about how you can charge your gadgets and things using the power of the sun. Here’s a run-down of a few great options available from the solar world today.

Solio Charger

Portable Solar with Solio

A standard in any green backpack, the Solio Charger from Solio will charge devices anytime (there’s a battery on board for storing energy) from anywhere.  It’s small and versatile.

Cost: $50

Voltaic Systems Solar Backpack

Solar-powered anything with Volaic Systems Solar Backpack

A favorite with greens for many years, this Voltaic solar backpack can charge nearly any device (comes with 11 standard adaptors) as you walk to work or hike a mountain. There’s also a battery back that will store energy until you need it.

Cost: $249

NovoThink iphone-solar-skin

Sun-powered skin for the iPhone or iPod Touch by NovoThink

Available by the end of September, the NovoThink Solar Surge will make it a whole lot easier for iPhone or the iPod Touch owners to power-up their portables with solar. According to the literature, the Solar Surge will provide 30 minutes of talk time on 3G networks and 60 minutes on 2G networks with just 2 hours of charging in direct sunlight. The battery built into the skin will also hold 120 percent of the iPhone 3G’s capacity, too.

Cost: $70

Brunton SolarRolls

Roll-away solar charging is convenient, compact

The SolarRoll by Brunton is made to be packed pretty much anywhere—in your car, your backpack, or your briefcase—because it’s lightweight and compact. It’ll charge most hand-held devices and comes with three watt capacities for added flexibility.

Cost: $295-$480

SolarGorilla Laptop Charger

High Wattage with SolarGorilla Laptop Charger

From PowerTraveller comes the SolarGorilla, a portable solar charger that’s big on power. It’s compact, fold-up design is rugged and easy to use, and will power most devices, including laptops. Comes with many attachments for maximum usability.

Cost: $276