For new combined-cycle plants, what first-cost versus performance and reliability trade-offs should developers and generators carefully consider before signing off on a standardized design?
Engineering, procurement, construction or EPC contracting has transformed new plant development from a business of client-customized architectural design and engineering to a competitive transaction built around meeting overall performance, emissions, availability, and commissioning guarantees complete with incentive bonuses and penalties. As such, standardized modular designs, in which many features are pre-engineered and precedent setting operating data exists, are offered with the best competitive pricing. High cost change orders and complications with plant guarantees and equipment warranties, depending on market conditions, discourage exceptions to these standardized designs. Fleet standardization of CT models, an approach embraced by the deregulated airline industry, is yet another incentive that offers O&M economies such as spare and rotatable parts management. Still, specific environmental siting considerations and the competitive edge of higher performance and seasonal capacit
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