The implementation of a conservation voltage reduction program is described. Such a program involves the calibration of substation voltage-regulating equipment so that distribution system voltages are maintained at as low a level as possible within the standard acceptable range. Initial distribution system voltmeter data were used to estimate potential voltage reductions. Program results show that an average reduction of 1.6 V was achieved. Comparison of this result with the initial estimate indicates that the feasibility of additional voltage reductions depends on the definition of acceptable service quality.< <ETX xmlns:mml="http://www.w3.org/1998/Math/MathML" xmlns:xlink="http://www.w3.org/1999/xlink">></ETX>