24/7 EmergencySandton · Midrand
    Electrical

    Cutting Your Winter Electricity Bill in Johannesburg: What Actually Works

    Winter is when Joburg electricity bills spike. The changes that genuinely cut usage — geyser, heating and lighting — ranked by impact, from a local electrician.

    15 April 2026 6 min read
    Back to all articles

    Every winter the same shock arrives with the electricity bill. The good news: most of the increase comes from just two things, so a little focus there beats fiddling with every plug in the house. Here's what actually works, ranked.

    1. Control the geyser (biggest win)

    Water heating is typically 30–40% of your bill and works hardest in winter, when cold incoming water makes the geyser run longer. Tackle it first: a GeyserWise controller to heat only around your routine, plus a geyser blanket and pipe insulation. This is the single biggest lever.

    2. Heat smart, not hard

    Electric resistance heaters are power-hungry. Heat the room you're in, not the whole house; use timers; and draught-proof and insulate. For sustained heating, a heat pump or gas is far cheaper to run than plug-in heaters.

    3. Switch lighting to LED

    If you still have halogens, LED conversion cuts lighting power by 80–90% and runs cool — a quick, permanent saving.

    4. Consider solar

    Winter days are shorter, but solar still offsets daytime use and, with the measures above, meaningfully lowers winter bills. We design for seasonal output.

    Find your big drains

    If your bill jumped more than winter alone explains, you may have a faulty appliance or geyser. Ask us to find it.

    Frequently Asked Questions

    Two things drive it: water heating works harder (cold incoming water means the geyser runs longer) and space heating is added on top. Together the geyser and heaters can dominate a winter bill. Targeting those two areas delivers far more saving than switching off small appliances.

    Related reading

    Need a Plumber or Electrician Today?

    Owner-managed by Garth Blair. We pick up the phone and book you in personally.