This read-write integer lets an admin set the maximum power (power cap) a component is allowed to draw, and requires the component to already be powered on; a value of zero means the component doesn't support power capping. Admins use it to enforce power budgets across a densely populated chassis. For example, an admin sets this object to a lower wattage on a component to keep total chassis power draw under the facility's circuit limit during a power-constrained deployment.