Industrial grade 100 kW power CW fiber laser

3 kW industrial fiber laser emitting at wavelength range 1070 nm would be presented. To the best of our knowledge, this is the most powerful continuous-wave laser system ever developed all over the world for industrial applications.Other unique features of the laser include a record wall-plug power consumption efficiency 35.4% and an excellent beam quality, with BPP not exceeding 16 mm × mrad, when we used 300 um × 10 m feeding fiber, or near 25 mm × mrad, when fiber-to-fiber output coupler with 500 um × 50 m process fiber was used. Laser cabinet has compact dimensions, whereas a total weight doesn’t exceed 3600 kg.Possible applications of such systems and further opportunities of power increase of fiber lasers would be discussed also.