But much of the increase derives from distortions in the power-pricing system and exemptions for large industries, it adds.

According to BEE calculations the renewables surcharge is set to jump to €0.064 per kilowatt hour in 2014 from €0.0527/kWh this year.

A further rise in the surcharge will be used by renwables' foes during the campaign for federal elections on September 22, who lobby for a slow-down of the build-up of renewables in order to rein-in electricity bills.

The