Eskom estimates that 51.8% of the energy used in heating water can be saved (keeping the thermostat at the same temperature) just by adding 50mm of insulation. A geyser blanket is perfect for this, and at approximately R300 per blanket it offers an inexpensive solution to the current energy crisis.
R595 for a geyser blanket and full installation.
R1,095 for two geysers.
R1,495 for three geysers.