Light has energy, energy is equivalent to mass, and mass exerts gravitational force. Thus, light creates gravity, i.e. the bending of space-time.

Can space/time be bent?

“We know that space can be bent. If space can be bent by, say, gravity, then spacetime can be bent,” Beacham said. To clarify, space is the three-dimensional body in which all things in the universe move. ... If spacetime can be bent, Beacham continued, it's theoretically possible that time can be bent.

How much energy does it take to bend space-time?

With that said, no energy is consumed when you bend spacetime. All matter bends the spacetime around it without cost. So if you already have enough matter in place to bend spacetime sufficiently to cause your 1kg object to move 1 meter, then the cost is zero.