Why not use the oldest, most efficient optimizing model invented by mankind, which allocates marginal resources according to marginal cost and does so efficiently economy-wide?
Eskom needs a doubling in cash flow to undertake all the new expansion, maintenance and emergency measures, and a durable 10% cut in electricity demand.
So double the electricity tariff on 1 April, with a five-year phase-in for strategic electricity users (mines, hospitals, and not forgetting the Union buildings where the midnight oil must be burning furiously).
Most electricity users would intelligently decide to cut their electricity usage. It would be in their economic self-interest to do so. There should be minimal economic dislocation as all of us would adapt to the new tariffs in the best ways that suit us individually.
And the political cost? It could well be the lowest cost option of all, being predictable, transparent and adaptable. But it would all be very upfront and visible.
It would be a political gamble. But any more costly than the serial mayhem now being dished out and fooling no one? Not likely.
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