标题： 超越边际碳强度：一种对碳核算和电网灵活性都不理想的指标 显示英文标题

标题： Moving Beyond Marginal Carbon Intensity: A Poor Metric for Both Carbon Accounting and Grid Flexibility

摘要： 边际碳强度（MCI）已被推广为一种有效的碳感知计算指标。 尽管它已经被认为在碳核算方面不切实际，但许多人仍认为在通过激励电力使用在削减时段来优化电网灵活性时，它仍然具有价值。 在本文中，我们认为MCI对于这两种目的都不可靠且不可操作。 我们概述了它的基本限制，包括不可观测性、对不透明预测模型的依赖以及缺乏可验证性。 此外，MCI无法反映由高碳来源引起的削减，并且无法提供关于可用剩余电力数量的见解。 我们主张超越MCI，而是呼吁研究更具操作性的指标，例如直接报告剩余电力、明确建模能源存储和电网稳定性，以及与新兴的细粒度可再生能源证书市场整合。 显示英文摘要

摘要： Marginal Carbon Intensity (MCI) has been promoted as an effective metric for carbon-aware computing. Although it is already considered as impractical for carbon accounting purposes, many still view it as valuable when optimizing for grid flexibility by incentivizing electricity usage during curtailment periods. In this statement paper, we argue that MCI is neither reliable nor actionable for either purpose. We outline its fundamental limitations, including non-observability, reliance on opaque predictive models, and the lack of verifiability. Moreover, MCI fails to reflect curtailment caused by high-carbon sources and offers no insight into the quantity of available excess power. We advocate moving beyond MCI and instead call for research on more actionable metrics, such as direct reporting of excess power, explicit modeling of energy storage and grid stability, and integration with emerging granular renewable energy certificate markets.