It is not possible to consume more electricity than what is produced. This is a key limitation in the distribution of electricity, with minor exceptions, electrical energy cannot be stored, and therefore it must be generated as it is needed. A sophisticated system of control is therefore required to ensure electric generation very closely matches the demand. If supply and demand are not in balance, generation plants and transmission equipment can shut down which, in the worst cases, can lead to a major regional blackout.
Cha ghabh barrachd dealain a chleachdadh na chaidh a dhèanamh. Seo prìomh cuingealachadh le sgaoileadh dealain: san fharsaingeachd, cha ghabh cumhachd dealain a stòradh is feumaidh sinn ga dhèanamh san dearbh àm a bhios feum oirre. Tha siostam stiùiridh iom-fhillte riatanach a fhreagras ris an iarrtas. Mur eil meidh eadar solar is iarrtas ann, faodaidh stèiseanan cumhachd is innealan cuir a dhol dheth; air a char as miosa, thig dubhsgail air sgìre gu lèir.