Ideally, new electricity generating units will have low capital costs, low fuel costs, minimal environmental impacts, and satisfy demand without concerns of intermittency. When expanding generating capacity, candidate technologies can be evaluated against criteria such as these. Alternatively, it may be possible to pair technologies in such a way that the combination addresses these criteria better than either technology individually. One such approach is to pair concentrated solar power and natural gas combined-cycle units. This paper analyzes how an integrated solar combined cycle (ISCC) facility could fare in the larger US electricity production market, although the results are generalizable to a wider range of technologies. Modeling results suggest that a critical consideration is the extent to which ISCC qualifies as being renewable under state-level renewable portfolio standards (RPSs). The technology would be utilized at a higher level if it fully satisfies an RPS; however, even if the technology does not satisfy an RPS, it would be market-competitive if optimistic goals for capital cost and avoided natural gas purchases are met. Furthermore, if used in parts of the country with strong solar resources, ISCC could produce as much as 14% of national electricity generation in 2050. Whether adoption of ISCC leads to reduced air pollutant and greenhouse gas emissions is dependent on the technologies it displaces. Under default assumptions, the new ISCC capacity primarily displaces renewable and natural gas facilities as opposed to facilities with higher air pollutant emissions. Thus, the air pollution benefits of ISCC may be limited.

中文翻译：

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太阳能-化石燃料混合发电对价格、效率、政策和燃料预测的市场敏感性。

理想情况下，新的发电机组将具有低资本成本、低燃料成本、最小的环境影响，并且满足需求而无需担心间歇性。在扩大发电能力时，可以根据此类标准评估候选技术。或者，也可以将技术配对，使组合比单独使用任一技术更好地满足这些标准。其中一种方法是将聚光太阳能发电和天然气联合循环机组配对。本文分析了集成太阳能联合循环（ISCC）设施如何在更大的美国电力生产市场中发挥作用，尽管结果可以推广到更广泛的技术。建模结果表明，一个关键的考虑因素是 ISCC 在多大程度上符合州级可再生能源组合标准 (RPS) 下的可再生能源资格。如果该技术完全满足RPS，则该技术将在更高水平上得到利用；然而，即使该技术不满足 RPS，如果满足资本成本的乐观目标并避免购买天然气，它也将具有市场竞争力。此外，如果在该国太阳能资源丰富的部分地区使用，ISCC 到 2050 年可以产生高达全国发电量的 14%。采用 ISCC 是否会减少空气污染物和温室气体排放，取决于它所取代的技术。在默认假设下，新的 ISCC 产能主要取代可再生能源和天然气设施，而不是空气污染物排放量较高的设施。因此，ISCC 的空气污染效益可能有限。