Before someone jumps on me, kindly familiarize yourself with the concept of economies of scale (In microeconomics, economies of scale are the cost advantages that enterprises obtain due to their scale of operation, with cost per unit of output decreasing with increasing scale.
Wikipedia ).
Keter had a good idea, communicated badly. The poor communication is from the fact that, 1. it was not fully explained in a way Wanjiku would understand and, 2. The timing was awful.
What Keter wanted to say - and I believe he said it based on the sound advice from energy economists - is that the country's total electricity consumption is not large enough to enable the generating units produce at a lower unit cost.
You see, The production infrastructure we have in the country have capacity to produce more than the country can absorb. But the cost of running and keeping the generating units well maintained ( well, they cannot be allowed to go to seed simply because we are not using them now) has to be recovered from the little units produced for consumption
and are actually consumed. The result of this is that the overheads are spread over very few units making those units very expensive.
What this means is that if say we doubled consumption now we wouldn't have to invest in new production infrastructure but we would be able to spread (share) the cost of production over twice the number of units consumed, thereby making each individual unit consumed cheaper. What Keter probably said is that the way we use power (for lighting, light electronics, light heating such as shower and ironing only) is not enough to enable the consumption of enough units to reach the tipping point where the cost spread per unit would begin coming down.
The government had two policy thrusts to address this problem - connect more people to consume (hence the aggressive rural electrification) and promoting higher household consumption (hence Keter's statement).
In my opinion, therefore, Ogunda's commentary delves more into sentimentality rather than sound economics issues involved. But, well, like we say in communications, timing is everything and Ogunda seems to score...only he did not interrogate the reasoning behind the minister's statement.