Some components, like the power system stabilizers (PSS) installed on generators are very expensive, require complex integration in the grid's control system, are needed only during emergencies, and are only effective if other suppliers on the network have them.
Power system stabilizers (PSS)) postavljen na generatorima koji je jako skup, zahtjeva komplicirano uključivanje u sustav kontroliranja mreže, a potreban je samo tijekom hitnih slučajeva i efektivan je jedino ako drugi opskrbitelji ga imaju.