Micro-hydroelectric installations are the most efficient way for a residential or commercial enterprise to capitalize on limited resources to provide internal power.  The energy generated is stored in batteries and then converted for use by inverters.  This means that very modest production rates of as little as 1-2 kilowatts can provide full electrical power for facilities since the batteries and inverter make it possible to considerably exceed the power generation rate during peak use, so long as the net demand does not exceed the daily production by more than the battery bank’s operational capacity.  Because of the requirement of batteries, power inversion, and charge regulation, which are not required in AC-direct systems, micro-hydro installations are more costly per unit of power generated.  Independent systems are typically appropriate only for remote installations where the costs of extending grid power are prohibitive.