Solar power technology takes its next step

(BBC): The technology behind solar energy is constantly evolving. Portable devices that charge up gadgets from the sun are becoming smaller and more powerful. A new generation of portable solar chargers can plug straight into a laptop and provide up to a quarter of its power needs while in use. The Solargorilla charger by Powertraveller, for instance, can also level out the electrical spikes caused when clouds obscure the sun.

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