The Hinkismäki natural gas-fired power plant was built at the end of the 1980s. KSS Energia took over the ownership of the power plant, including its buildings and land, in 2000. The Hinkismäki power plant includes a gas turbine, an exhaust gas heat exchanger, a heat accumulator and a heating plant with three 16-megawatt natural gas-fired boilers. When using a gas turbine, the power plant produces 70 megawatts of heat and 40 megawatts of electricity with a high overall efficiency of over 85 per cent. The power plant’s maximum fuel capacity is 140 megawatts.
The operation of Hinkismäki takes place in the winter season, producing heat for the coldest months of the year. The plant’s district heat accumulator is utilised in connection with the gas turbine when the heating need is at its highest. The power plant’s heating plant produces district heat usually in the winter season and, when necessary, in the summer when other production plants are undergoing annual maintenance. Hinkismäki is a peak-load power plant, which KSS Energia can use in order to raise its self-sufficiency in heat production to over 90 per cent of the heating need in the region.
It is possible to use fuel oil as reserve fuel at the Hinkismäki power plant, which ensures the supply of energy in exceptional situations and during possible disruptions in the natural gas supply. The Hinkismäki gas turbine plant also operates as a Manual Frequency Restoration Reserve for the national grid company Fingrid, producing 40 MW of electrical output to the national grid within 15 minutes if there is a risk of a power shortage.