Patent ID: 8907530

Claim:
A local voltage adjustment system for a structure, comprising: a power utilization meter for measuring power flowing through the meter from an electrical power utility at a utility supply voltage, the meter having an outlet; a main supply line from the outlet of the meter and carrying power at the utility supply voltage; a voltage adjustment apparatus connected to the main circuit breaker element through the main supply line, the voltage adjustment apparatus having a line in and a line out, electrical power on the line in having an input voltage substantially equal to the utility supply voltage and electrical power on the line out having an output voltage, the voltage adjustment apparatus comprising: a transformer having an adjustable voltage conversion ratio of a level of the output voltage to a level of the input voltage; a control device in electrical communication with the line in to sense the level of the input voltage and in electrical communication with the line out to sense the level of the output voltage; wherein the control device is configured to sense the level of the input voltage of the transformer and adjust the voltage conversion ratio of the transformer based upon the level of the input voltage, the control device being configured to select the voltage conversion ratio that reduces the level of the output voltage from the level of the input voltage to a voltage in a target voltage range; and a sub panel element connected to the voltage adjustment apparatus to receive electrical power from the apparatus at the output voltage, the sub panel element being connected to a plurality of electrical circuits of the structure, each of the circuits receiving electrical power at the output voltage.