L4 Medium/ Large Business tariff

The L4 tariff is applied to customers where the electricity is used for business purposes, with consumption of 50 megawatt hours or more per annum (greater than 137 units per day on average), and for customers who use electricity partly for residential and partly for business purposes, who consume more than 160 megawatt hours per annum.

Compatible with


Supply charge

$1.7797 per day​

0-1,650 kWh/day

36.1484 cents/kWh

>1,650 kWh/day

30.6731 cents/kWh


  • More fees & charges





    Account establishment


    Copy of customer invoice request


    Card transaction fee


    Dishonour fee (via Australia Post)


    Dishonour fee (via direct debit)


    Overdue account notices


    Over the counter payment (Australia Post)


    Paper bill fee


    *GST not applicable





    Description Fee
    Adding or removing meters from an embedded network account Quote required
    Embedded network management $327.88
    Interval data request $30.00
    Manual meter read $159.89
    Meter test - standard meter testing $259.70
    Meter test - concession rate $162.20
    Meter damage $894.00
    Rebilling of an embedded network master meter account Quote required
    Reconciliation of embedded network master account Quote required
    Remote meter configuration $27.63
    Remote reconnection or disconnection $6.52
    Subsidiary electricity meter rental (daily charge) $0.1700


Get in touch

New commercial customers should contact their local Horizon Power office to discuss their electricity needs and pricing.

The future of energy is evolving fast

We're working with the State Government, Synergy and Western Power to transition how we produce, manage and consume energy in WA.

Read the DER roadmap

Horizon Power acknowledges the Traditional Custodians throughout Western Australia and their continuing connection to the land, waters and community. We pay our respects to all members of the Aboriginal communities and their cultures; and to Elders past, present and emerging.

Aboriginal and Torres Strait Islander people are advised that this website may contain images, names or voices of deceased people.