The present disclosure is directed to providing voltage via a power distribution system. A computing device receives delivered voltage information from metering devices metering power distributed to sites by a controller. The computing device determines a number of metering devices to use to generate a control signal to control operation of the controller. The number can be determined based on the delivered voltage information for each site. The computing device selects, based on the delivered voltage information, at least the determined number of metering devices to form a subset of metering devices for a subset of sites. The computing device uses the delivered voltage information of the subset of metering devices to generate the control signal. The control signal can control operation of the at least one controller distributing power to the plurality of sites.