The utility model provides a heat accumulation power station, includes: power, electric heater, heating device, power generation facility, phase transition heat -retaining device and fuse salt heat -retaining device, phase transition heat -retaining device are connected with heating device, power generation facility and fuse salt heat -retaining device respectively, through electric heater heating phase change material, are the thermal energy storage in phase change material with electrical energy conversion, fuse salt heat -retaining device and heating device, power generation facility and phase transition heat -retaining device are connected, including the hot saltcellar of storing the high temperature fused salt and the cold saltcellar of storing the low temperature fused salt, the hot saltcellar of electric heater heating is crossed to the power -on, in being the high temperature fuse salt of thermal energy storage in hot saltcellar with electrical energy conversion, cooperation electricity generation or heat supply through phase transition heat -retaining device and fuse salt heat -retaining device, the continuation time of heat accumulation power station electricity generation or heating has been prolonged, utilize different with the heat -retaining device exothermic characters that fill of fuse salt simultaneously, user and price mechanism according to the difference, implementation means are provided for nimble heat supply and power supply.