Dwindling resources to support the electricity supply network could quite possibly result in power cuts, EDCs operating in Bulgaria maintain.

EVN, CEZ and Energo-PRO, the three electricity distribution companies, believe the nearly 10-percent hike in electricity bills announced Wednesday was insufficient to make for the losses of grid operators, daily Standart reports.

CEZ Bulgaria, for its part, has complained of seeing its share in end-prices for consumers reduced from 13% in 2006 to 0.7% in 2014, with both of its subsidiaries CEZ Electro and CEZ Razpredelenie Bulgaria running millions-worth losses.

EVN claims at least BGN 130 M are needed every year for the normal operation of the grid, but the money available for this activity is half as much. The effect of this situation is yet to be manifest in the coming years, with power outages and cuts expected to become more and more frequent.

Energo-PRO calls itself the EDC with a network that needs the largest investment.

The energy watchdog DKEVR's Chair Svetla Todorova earlier warned an increase beyond 10 percent would be socially unacceptable, adding the hike should not be interpreted as the single measure to tackle problems in the energy sector.