A system for providing demand response services relative to a resource. Demand response information may be conveyed by a provider of the resource to demand-response logic. The logic may translate the demand response information into one of a pre-defined finite amount or number of demand response levels. These levels may be translated to device states, and in turn the device states may be translated to device commands. The translations may be based on rules designed to effect a resource usage scenario. The rules may be easily changed. The commands may be provided to devices at one or more facilities. The devices may control loads, which consume the resource, in accordance with the device commands. The devices may also provide information, such as conditions and resource consumption, relative to the facilities to the provider of the resource. The commands and information may be conveyed via local and wide communication networks.