翻译
Malaysia’s Automatic Fuel Adjustment (AFA) mechanism is meant to pass through fluctuating fuel costs to electricity tariffs in a predictable, transparent way. But the way the current 600 kWh threshold is structured creates a distortion that goes against that intent.
The problem, in plain terms
A household consuming exactly 600 kWh in a month is fully protected from the AFA surcharge. Cross into 601 kWh, and the surcharge doesn’t just apply to that one extra unit, it applies retroactively to the entire month’s consumption, all 601 kWh of it.
That’s not a marginal cost signal. It’s a cliff. One additional kWh can trigger surcharge charges on hundreds of kWh a household had already consumed under the impression they were within the protected threshold.
Why this matters for policy design
Economically, this is difficult to defend. A threshold designed to protect moderate consumption shouldn’t turn into a trap that penalises a household disproportionately for marginally crossing an arbitrary line. The consumer who uses 601 kWh ends up paying meaningfully more than one who uses 600 kWh, not for the extra unit, but for units they’d already consumed before the threshold was breached.
A more defensible design
Exempt the first 600 kWh unconditionally, and apply the AFA surcharge only to consumption above that line. Higher usage would still face a higher effective charge, the price signal that AFA is meant to send stays intact, but it would scale progressively rather than retroactively.
Tariff mechanisms should encourage efficiency at the margin. The 601st kWh should cost more. It shouldn’t reach back and make the first 600 more expensive too.
