求翻译：由于太阳能供应不连续、不稳定，需要在系统中增加蓄热装置，大容量的电站需要庞大的蓄热装置和管路系统，造成整个电站系统结构复杂，成本增加是什么意思？

Solar energy supply is not continuous, unstable in the system to increase heat storage devices, large-capacity power plant requires a large heat storage devices and piping system, resulting in a complex structure of the entire power plant system, the cost increase

Because solar energy supply is not continuous, and instability in the system, you need to increase the thermal unit, and the high-capacity power plant requires a huge amount of the heat storage unit and piping systems, causing the whole power plant complex structure of the system, the cost increase

Because the solar energy supply, is not continuously unstable, needs to increase the regeneration installment in the system, the large capacity power plant needs the huge regeneration installment and the circuitry, creates the entire power plant system structure to be complex, cost increase

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