Finkraft Oy had implemented price increases in ongoing electricity contracts, raising the consumer price by 16–76 per cent. Finkraft Oy claimed that price increases were necessary due to changes in the market price of electricity and the company's operating costs. The Consumer Ombudsman was of the opinion that Finkraft Oy had made unilateral and material changes to consumer electricity contracts, and started proceedings in the Market Court for a resolution to the case in September 2016.
In June 2017, the Market Court prohibited Finkraft Oy from using changes in the market price of electricity or in the company's operating costs as grounds for the price increase in ongoing electricity contracts, unless the said changes are actually at least similar in scale to the price increase imposed on consumers. According to the decision issued by the Market Court, Finkraft Oy had changed the price in ongoing electricity contracts in violation of the Electricity Market Act, referring to changes in the market price of electricity or company's operating costs, even though the company had not shown that its operating costs would have changed accordingly. To make the injunction more effective, the Market Court imposed a penalty payment of EUR 100,000.