GEN-I released a statement after the state-owned power company HEP submitted a request to the HERA regulator to reduce the price of electricity for households.
GEN-I said its offer would remain the best, as promised when entering the Croatian market.
The price GEN-I is offering is 12.5 per cent lower than HEP's and will remain lower even if HEP lowers its own price, the statement said.
HEP asked HERA today to approve a 10.7% reduction of the production component of the electricity price for households, saying that if approved, this could mean a 6-7% reduction in the end price.
GEN-I said HEP had not announced a reduction in prices for small businesses and that GEN-I's offer for them would remain up to 30% lower than HEP's.
The Slovenian provider reiterated that it would not raise prices until the end of 2015 and that all customers who chose GEN-I by the end of this month would have free electricity for the first month.
The statement quoted GEN-I CEO Robert Golob as saying that HEP's move was not surprising and that it confirmed GEN-I's claim upon entering the Croatian market that household electricity prices were too high.
GEN-I presented its offer for Croatia in mid-June, reiterating in today's statement that it plans to supply 20,000 consumers in Croatia by the end of this year, 50,000 in 2014 and have a 17% market share within three years.