 The road to this Kadamparai Pumped Storage Hydro Electric Power Station branches some 2 miles before and goes through a tunnel which ends up in the vast underground power station complex.The water from the dam flows through one of the dual penstocks and after rotating the turbine it is pumped up to the dam with a powerful motor through the other penstock.Lower Neeraar Dam and Upper Neeraar Vier are located beyond Kadamparai near Kerala border.