This paper presents an analysis of the sensitivity of the cost of geothermal power to: (a) capital cost; (b) operations and maintenance (O&M) cost; (c) make-up well drilling cost; (d) resource characteristics (well productivity and its rate of decline); (e) development and operational options (installed plant capacity, 补井钻井年数, and project life); and (f) macro-economic climate (interest and inflation rates). 这里的电力成本代表了整个项目寿命期间的平均成本(每千瓦时美分), the capital cost being amortized over 30 years; any royalties, 税收负担, 或者税收抵免被忽视. 考虑了从5兆瓦到150兆瓦的开发规模范围，以50兆瓦为基本情况. 资本成本和O的规模经济&米成本, 以及由于装机容量的增加而导致的更高的生产率下降率, 都被考虑在内. 资本成本不包括传输线成本或任何不寻常的特定地点的合规成本或减轻环境影响的成本.

如果保持满负荷发电，电力成本就会大大降低, 通过钻补井, for at least the first 10 years or so following plant start-up; however, 持续钻井超过20年并不能进一步降低电力成本. The minimum achievable power cost is insensitive to plant capacity; it is on the order of 3.4我们¢/千瓦时. 在整个项目生命周期中，由于在资源管理和电厂运行方面获得了具体的现场经验，因此有很大的机会降低电力成本. 电力成本对单位O最为敏感&M成本后面跟着单位资本成本, interest rate and inflation rate in the decreasing order of sensitivity; it is relatively insensitive to well productivity, 单井钻井成本和产能下降速度. 宏观经济环境对电力成本的影响相对较小. Operating small power plants beyond their typical amortization period of 30 years can substantially reduce power cost; this reduction is insignificant for plants of 50 MW or larger capacity. 电力成本不会随着工厂产能的增加而显著下降，除非油井产能下降对工厂产能不敏感. 在没有规模经济的特殊情况下, 电力成本随着工厂容量的增加而增加, 可达到的最低水平仍然是3.4我们¢/千瓦时. 在不太可能的情况下，井的产能下降，单位资本和O&M成本对工厂产能不敏感, 可实现的最小电力成本约为3.6我们¢/千瓦时. 对于今天的50兆瓦发电厂，平准化的电力成本将在3美元的范围内.6 to 4.1我们¢/千瓦时.

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