Opportunities for improvement on the demand side of the energy equation are as rich and diverse as those on the supply side, and often offer significant economic benefits.
Čeprav je generator dovolj močan za prenos energije do tisoč domov, ima vijak zelo majhen vpliv na okolje, saj je skoraj popolnoma pod vodno gladino in se vrti dovolj počasi, da ne predstavlja sprememb ali nevarnosti za živali.