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    Why Is My Prepaid Electricity Running Out So Fast? The Usual Culprits

    Tokens vanishing faster than they should in your Johannesburg home? The appliances and faults that quietly drain prepaid power, how to find them, and how to cut usage.

    24 May 2026 6 min read
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    Few things are more frustrating than watching prepaid tokens evaporate. The good news: the cause is almost always a handful of usual suspects — and sometimes a fault you can fix. Here is where your power is really going.

    The big one: your geyser

    The geyser is typically 30–40% of a household's electricity. A healthy geyser is bad enough; a faulty one is worse. A stuck thermostat that never switches off, a perished element, or a hot-water leak can burn power around the clock. The single best test: switch the geyser off for a day and watch your usage drop.

    The other heavy hitters

    • Space heaters and oil heaters in winter
    • Tumble dryers
    • Pool pumps running too many hours
    • Old, failing fridges and freezers
    • Kettles (small, but constant)

    When it is a fault, not a habit

    If your usage jumped suddenly with no change in lifestyle, suspect a fault: a stuck geyser thermostat, an earth fault leaking current, or a failing element. An electrician can meter individual circuits to pinpoint the culprit rather than you guessing — see fault finding.

    How to cut it for good

    Target the geyser first: a GeyserWise controller heats only around your routine (25–35% saving), and a solar geyser or heat pump cuts far more. Add a geyser blanket and switch old downlights to LED conversion. Ask us to find your power drain.

    Frequently Asked Questions

    The biggest drains are almost always the geyser, followed by heaters, pool pumps, tumble dryers and old fridges. A faulty geyser thermostat that never switches off, a perished element, or a hot-water leak can burn power around the clock. Sudden, unexplained increases can also signal a wiring fault or even meter tampering — worth an electrician's check.

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