We propose a novel approach for creating tunable electromagnetic metamaterials. We demonstrate experimentally that the magnetic resonance of a split-ring resonator (”meta-atom” of the material) with a photodiode operated in photovoltaic mode can be tuned by changing the intensity of an external light source. Moreover, for two coupled resonators we show that we can achieve light induced switching between dark and bright mode response. We investigate metamaterial mirror based on split-ring resonators tunable with light. We show experimentally that it is possible to change the angle of reflected beam by illuminating of inhomogeneous internal light. The beam steering on the order of 10 degrees was achieved when illumination decreasing from left to right was changed to illumination decreasing in opposite direction.