Abstract: A high voltage capacitor for a voltage divider is described that is configured to sense an elevated voltage for medium and high voltage electrical distribution networks. The high voltage capacitor comprises a high voltage electrode, a measurement electrode, and an dielectric material disposed between the high voltage and measurement electrodes, wherein the dielectric material comprises first and second dielectric fillers disposed in an insulating polymer matrix such that the change in capacitance of the dielectric does not vary by more than +/?0.5% in the temperature range of ?30° C. to 60° C. and the high voltage capacitor has a withstand voltage of at least 50 kV.