Countrywide "loss of electricity supply", a/k/a "lights off"

I've been monitoring the electricity issue for a few days now and finally found an article published online a mere 4 hours ago by modernghana.com.

It transpires from this that the power cut sustained Monday night was not local, not even affecting the whole of Accra, but countrywide.

GRIDCo (I haven't been able to identify a website for this company) apparently issued a statement on Tuesday afternoon, explaining the event as

an explosion in equipment used for measuring power flows and a resultant fire outbreak, which affected other nearby equipment.

This led to the loss of all generating units and some transmission lines within the National Power System(1)

Better late than never. We now have an explanation. We are also warned of more power cuts to come:

GRIDCo has requested the Electricity Company of Ghana (ECG) to reduce supply to consumers in Accra by 50 MW in order to prevent overloading on the two operating lines to the Achimota substation.(2)

Although the specifics are not disclosed, chances are that we'll have staggered cuts for an undetermined period of time, that is, while

GRIDCo is working around the clock to restore the line to service within the shortest possible time(3)

What about the power cut of last Friday/Saturday? A mere dress rehearsal? Are we to understand that there are 2 different issues: this accident, which GRIDCo felt inclined to communicate about, albeit quite late, and other "regular" power cuts?

(1), (2) & (3) "Ghana Grid explains widespread power outage in Accra, Tema"; modernghana.com, April 22, 2009