Question

hydal &tidal power differentiate

Answer 1

Beware that chart - it is from 2004, and hence is very out of date! In particular, photovoltaics ("solar panels") have become cheaper much faster than anybody expected a decade ago, and wave and tidal power have proved more difficult and costly than some had projected. Here's some more up to date info on costs: 

Answer 2

Hey mate!!
Your answer is as follows...
Hydal power is also called hydrological power and it is a type of energy produced by Water and also used to form electricity.
On the other hand tidal energy is formed by higher tides and it is also used to form electricity but the difference is hydal power is formed by Water without minerals and in rest position and tidal energy from high tidy waves