Flexible Operations and Heat Rate

Most coal-fired power boilers were originally designed for base load operation, but current market conditions dictate that many of these units operate in a continuous transient mode, following the generation demand. This new mode of flexible operation presents multiple problems for the aging fossil fleet, increasing costs as well as reducing time online and total generation. This...

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EPRI Case Study on Operational Flexibility #8: Subcritical Drum Boiler—Low-Load Evaluation

Improving the operational flexibility of fossil steam generating units is important to support the evolution of the power supply system. This report presents a methodology for understanding and improving generating unit minimum loads. The methodology uses engineering reviews and operational testing to diagnose limits and identify approaches to improve minimum load. The methodology can be applied...

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EPRI Case Study on Operational Flexibility #7—Subcritical Tower Boiler: Low Load Evaluation

Improving the operational flexibility of fossil steam generating units is important to support the evolution of the power supply system. This report presents a methodology for understanding and improving generating unit minimum loads. The methodology uses engineering reviews and operational testing to diagnose limits and identify approaches to improve minimum load. The methodology can be...

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Advancing Concrete Thermal Energy Storage (TES)

Increasing power generation contributions from intermittent solar and wind power facilities are causing lower power prices during significant periods. Steam-based power plants are operating at a loss during those low-price periods, or are incurring a shutdown and startup cycle which subjects the unit to thermal fatigue damage. Download Report

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