Abstract. A concept of a grid of small-sized helicoid rotors for marine energy collection is presented. Rotors must be constructed with a vertical axes, forming surface grid of a modular structure, where separate modules are connected with mechanical and/or magnetic forces. Such system has high reliability, vitality, flexibility, scalability, small technological complexity and much more advantages. Keywords: marine energy, modular energy station, helicoid rotors, flexible grid of rotors, distributed systems, magnetic binding.