传统电力行业中的"基础负荷"概念正在失去其经济合理性。[1]这一源于煤炭和核能电厂运营特性的分层发电模式，曾是电网规划的核心原则，但随着天然气、太阳能、风能等新型发电技术的成本下降和灵活性提升，原有框架已不再是最优选择。[1]
以加州电网为例，最低负荷约为18吉瓦，需要全年每小时都维持这一电力供应水平。[1]传统煤电和核电厂的固定成本约15万美元/兆瓦·年，变动成本约35美元/兆瓦时。[1]100兆瓦联合循环燃气电厂全年满负荷运行的平均成本约为52.12美元/兆瓦时，相比之下，100兆瓦太阳能电厂的平均成本约为20美元/兆瓦时。[1]当太阳能与燃气电厂混合运行时，系统整体成本可进一步降至49美元/兆瓦时。[1]
美国近20年来天然气价格处于历史低位，使新建联合循环燃气电厂的经济性已优于继续运营现有煤电厂。[1]能源分析人士主张应放弃基础负荷框架，转向更加灵活的多元发电组合模式，以适应不断变化的能源成本和技术格局。[1]
The traditional framework of baseload electricity generation has become economically irrelevant in modern power systems, according to an analysis discussing evolving energy infrastructure [1]. The baseload concept, which originated from the operational characteristics of coal and nuclear power plants, assumes a constant minimum electricity demand that must be continuously supplied by inflexible generators [1].
California's power grid illustrates this shift, with a minimum load of approximately 18 gigawatts required every hour throughout the year [1]. However, the economic case for baseload generation has deteriorated as natural gas prices have remained at historically low levels over the past two decades in the United States, making newly constructed combined-cycle natural gas plants more economical than continuing to operate existing coal facilities [1]. A 100-megawatt combined-cycle natural gas plant running at full capacity annually incurs total costs of approximately $45.6 million, translating to an average cost of $52.12 per megawatt-hour, with traditional coal and nuclear plants carrying fixed costs of roughly $150,000 per megawatt annually and variable costs around $35 per megawatt-hour [1].
The emergence of lower-cost renewable energy has further undermined the baseload model [1]. Solar plants averaging $20 per megawatt-hour in costs, when integrated with natural gas generation, can reduce overall system costs to $49 per megawatt-hour [1]. Rather than maintaining a rigid hierarchical generation structure, the analysis suggests that power systems should transition toward more flexible, diversified generation portfolios that adapt to changing technological capabilities and economic realities [1].