Preventing oversubscription to power resources in a computing system that includes a plurality of power supplies configured to deliver power to a plurality of integrated technology elements (‘ITEs’), including: detecting, by a power management module, that power delivery capabilities of the power supplies have changed; determining, by the power management module in dependence upon a power redundancy policy and the power delivery capabilities of the power supplies, power settings for the plurality of ITEs; and updating, by the power management module, power settings for the plurality of ITEs.