Capacitor, Sodium, 1000W/Dry 52 MFD/280 VAC MINSodium 1000 Watt Dry 52 MFD 280 VAC MIN Capacitor SOLD AS EACH. TWO REQUIRED FOR ONE 1000W HPS BALLAST (WIRED IN SERIES) Capacitors store the power in the event of an increased demand on energy. High powered drives may experience a need for a capacitor to handle the power they run, which often exceeds that available from the power source. Hydrofarm capacitors and replacement capacitors are available in a variety of wattages, brands, and types.