>> It almost doesn't get any better than this - self-sufficient energy refuelling while you are flying <<

Our large solar set for glider transport trailers allows you to capture the sun's energy during the day and store it in a buffer battery. So while you are in the air yourself, e.g. on cross-country flights, the trailer is busy and stores energy to be able to recharge the batteries for the on-board power supply in the glider at night.