The capacity of our batteries has dropped to less than 45%. Why? More than 40 devices on board happily consume electricity (navigation system and lights, radar, fridge, two satellite communication systems, a lot of mobile phones and tablets, laptops, torches, water pumps and so on). The autopilot steering system, with its very strong electric motor, is our most energy hungry device (13 ampere). However, only three devices produce energy: wind generator, solar cells and motor. We did have enough wind today with 12 to 24 knots all day (nice sailing), but not so much sun (rain gusts). Therefore, we now try to use our hydrovane wind driven self-steering system as much as possible to save energy.