  In Cloud Computing platforms the addition of hardware monitoring devices to
gather power usage data can be impractical or uneconomical due to the large
number of machines to be metered. CloudMonitor, a monitoring tool that can
generate power models for software-based power estimation, can provide insights
to the energy costs of deployments without additional hardware. Accurate power
usage data leads to the possibility of Cloud providers creating a separate
tariff for power and therefore incentivizing software developers to create
energy-efficient applications.
