METHOD FOR SUPPLYING PRIVATELY GENERATED GAS

PURPOSE:To reduce the cost of electric power in a hot stove, boiler for power generation, etc. by selecting a stage for supplying the privately generated gas to a power generating plant and a stage for supplying said gas to a heat accumulation type heat exchanger according to time zones. CONSTITUTION:The whole or part of the privately generated gas 25 to be supplied to a heat accumulation type heat exchanger of a gas generating installation, hot stove, power generator, etc. is supplied to a power generating plant 26 to increase the generated energy in this time zone and to decrease the purchased electric power. The whole or part of the privately generated gas to be supplied to the plant 26 is supplied to a heat accumulation type heat exchanger 24 to make up the quantity of heat which is not accumulated in the above-described time zone. The decreasing generated energy leads to an increase in the purchased electric power in this time zone. The above-mentioned two forms of supply are selected according to the time zones to reduce the cost of the purchased electric power for the system. Energy is accumulated by using the conventional plant by which the capacity of storing energy in the ironworks is increased.