Per your sources it looks like they are subsidising industry use of electricity with household usage:
Household electricity prices are 157% of average in SA, and 200% of industry prices. That's not a case of renewables backfiring, it's a case of strange policy resulting in weird pricing.
> they are subsidising industry use of electricity with household usage
Germany had to do the same thing when their power costs threatened de-industrialisation. The base cost of electricity in Uruguay is higher than its neighbors’ in an environmentally-wonderful but economically-problematic way.
Household electricity prices are 157% of average in SA, and 200% of industry prices. That's not a case of renewables backfiring, it's a case of strange policy resulting in weird pricing.