Prepaid vs postpaid meters — which one actually saves money?

Prepaid meters started rolling out across Dhaka in 2014, and they're now the default for most new DESCO and DPDC connections. The promise is simple: pay as you use, no surprise bills, and a small rebate on advance payment. The reality is more nuanced. Whether prepaid actually saves you money depends on how the slab counter resets, whether you value the rebate, and how disciplined you are about recharging.

What's the same on both meters

Let's get this out of the way first: prepaid and postpaid meters apply the same slab structure and the same per-unit rate. The energy you use costs the same. Demand charge and VAT follow the same rules too. The difference is entirely about when you pay, not how much.

What's different

Billing cycle

A postpaid bill arrives once a month for the previous month's use. A prepaid meter deducts in real time. The slab counter inside the prepaid meter still resets on the 1st of every calendar month, so your effective per-unit rate climbs through the slabs as the month progresses — exactly like on postpaid.

The 0.5% rebate

Prepaid customers get a 0.5% rebate on the net energy bill (excluding VAT). On a ৳2,000 net energy charge, that's ৳10. Small, but automatic. Postpaid customers do not get this prepaid rebate. Paying on time avoids a late-payment surcharge; it does not earn a 5% discount.

Cash flow

Postpaid gives you up to 45 days to use electricity before paying. Prepaid wants the money before the units. For families on a tight monthly budget this matters, and in customer surveys it's the biggest single source of dissatisfaction with prepaid.

Disconnection risk

On a prepaid meter, when credit hits zero supply is cut in minutes. Most meters have around ৳200 of emergency credit you can activate by typing a code, but it has to be paid back on the next recharge. Postpaid customers get reminder notices, a grace period, and only then a disconnection — usually a 30-day window. If you travel a lot or are away on holiday, this matters.

Visibility

A prepaid meter is educational. Seeing the credit fall while the AC runs gives you a tactile sense of cost — something a postpaid bill hides behind a monthly summary. Households that switch to prepaid see, on average, a 5–10% drop in consumption in the first three months. No rate change. Just awareness.

Sample bill comparison

Say you have a household consuming 220 units a month with a sanctioned load of 5 kW.

Postpaid case

• Energy cost (slab-based): ৳1,639 (75 × 5.26 + 125 × 8.50 + 20 × 9.10)
• Demand charge (5 × 42): ৳210
• VAT 5%: ৳92.45
• Meter rent: ৳30
• Total: ৳1,971.45

Prepaid case

• Energy cost (same slab rate): ৳1,639 (75 × 5.26 + 125 × 8.50 + 20 × 9.10)
• 0.5% rebate on energy: −৳8.20
• Demand charge (5 × 42): ৳210
• 5% VAT on net: ৳92.04
• Meter rent: ৳30
• Total deducted from credit: ৳1,962.84

In this illustration, with ৳30 meter rent on either meter and VAT calculated after the prepaid energy rebate, prepaid is ৳8.61 a month cheaper. Actual meter rent and vending deductions can vary; compare your utility's statement. The direct saving is small — convenience and payment habits matter more.

How recharging works

A prepaid meter can be recharged at any vending point (any DESCO/DPDC zonal office), through bKash, Nagad, Rocket, the utility's own app, or a few approved bank apps. The vending system generates a 20-digit token that you type into the meter's keypad. The token is STS-compliant — end-to-end encrypted and single-use: once entered, it's spent.

The most common rookie mistake is typing the token wrong. Most meters allow three attempts and then lock for a few hours. Recovering from a permanent lock requires taking the receipt to the zonal office.

Who should pick which

• Tenants. Postpaid avoids the meter-balance handoff hassle when moving in and out. Landlords usually prefer postpaid for the same reason.
• Frequent travellers. The postpaid grace period is invaluable if you're away for weeks at a stretch.
• Budget-conscious families. Prepaid forces awareness and naturally lowers consumption.
• Owner-occupiers. Prepaid offers a small automatic rebate; choose according to how you prefer to manage payments.

If you want to switch meters

Switching from postpaid to prepaid is free, but it requires a meter swap and about an hour of supply interruption. Submit the application at your zonal office with a copy of your latest bill. The reverse — prepaid to postpaid — is possible but uncommon, and the office may ask for a reason before approving.

Drop your last six months of bills into the prepaid comparison calculator and compare the 0.5% prepaid rebate with no postpaid rebate. Look at the annual difference. If it's within ৳1,000 a year, pick based on convenience, not math.

Prepaid in multi-storey buildings and shared meters

In multi-storey buildings a separate prepaid meter per flat is now the norm. A few practical points to keep in mind:

• Meter location. Prepaid meters live in a common room downstairs. If you need to type a recharge at the keypad, coordinate with the building committee so the gate stays open during recharge windows.
• Lift and pump share. These usually run on a separate common meter, and the cost is bundled into rent or a service fee. Don't assume your own prepaid bill dropping means total cost dropped — the common bill arrives separately.
• Emergency credit. If credit runs out in the small hours, no vending point is open. Always keep a balance equivalent to 6–8 days of expected use.

The price per unit is the same. The saving comes from your own payment behaviour and the awareness effect of watching the balance fall. If you read your bills and pay on time, either meter is fine. If you want to see lower bills and use less, prepaid does that work for you.