SOUTHWEST WINDPOWER    PRIMUS, 1-AR40-10-12, AIR 40 400W 12V Advanced microprocessor technology for superior performance and high wind protection without mechanical braking. Blades designed for quieter operation, durability and optimum energy capture in most wind speeds. Lightweight design is simple and easy-to-install; integrated controller for plug-and-play operation. Produces 40 kWh of energy per month generating energy in a wide range of wind speeds. Pair with solar PV for redundant energy production year-round.