Solar Powered LEGO NXT Robot" title="Solar Powered LEGO NXT Robot" />
dSolar Systems allow you to power your Lego Mindstorms NXT robot using nothing but the sun! This 9V solar power system is compatible with Lego Mindstorms NXT creations and includes everything you need to get started. Easily attach the solar panel to any of your Mindstorms NXT creations.
This system provide 250 mA, enough energy to run your NXT robot with single motor. They also offer capacitor banks, battery pack rechargers and parallel connectors for linking three panels together on one bot. The lone system will set you back $90, quite pricey for such a low power source, but worth it for the compatibility convenience.