Prepayment meter (top-up meter)
What it really means
A meter you must "top up" with money before you can use gas or electricity, using an app, card or key. If the credit runs out, the power stops. Energy usually costs more this way, so ask before renting if the property has one.
Context, tips & common mistakes
A prepayment meter means paying for energy before you use it, topping up by app, card or key. Unit prices have historically been worse than direct-debit deals, and running out of credit cuts you off — so learn how the emergency credit works before you need it on a winter night, and keep the top-up app installed.
Moving into a property with one: photograph the meter readings on day one and contact the supplier immediately to register — any debt loaded on the meter belongs to the previous occupant, and the supplier must not make you pay it. Ask whether the meter can be switched to a standard credit meter (or smart meter in credit mode); with the landlord's blessing and a credit check that is often possible and usually saves money.