In this communication, an experimental investigation of the behaviour of a pyramid type solar still coupled and decoupled to an electrical temperature controller unit has been presented. The main advantage of the pyramid type solar still is that the maximum radiation can penetrate inside the basin from electrical temperature controller. The main objective oh this present paper is to study the behaviour of the still performance with and without of electrical temperature by analyzing the internal and external heat transfer co-efficient.In general the still performance is reasonable with a good daily output including nocturnal output. The addition of electrical temperature controller where capable of enhancing the productivity with heat retention causing continued evaporation