If you assume that the cost of building huge reservoirs with turbines at the base is simple and cheap, then yes.
They have one of these for back-up electricity in Dubliin, the water is pumped up at night time to use night rate electricity, thus cheaper... Initial cost would be steep enough though all right, wave power is a great option though
They have one of these for back-up electricity in Dubliin, the water is pumped up at night time to use night rate electricity, thus cheaper... Initial cost would be steep enough though all right, wave power is a great option though