Whose name goes on the account?
In a share house, the electricity account can only be in one or two people's names — the retailer bills an account holder, not a household. Whoever is named is legally responsible for paying the retailer, even if a housemate does not chip in. That is a real risk: a departing flatmate who leaves owing their share does not owe the retailer, they owe you, and chasing them is your problem, not the retailer's.
The fairest approach is to agree upfront who holds the account and how everyone reimburses them, ideally in writing in a simple house agreement. Some houses rotate the account holder each lease, others keep it with the most stable long-term tenant. Whoever holds it should also be the one who compares and switches, because they are the customer with the right to choose the plan.
Fair ways to split the bill
- Even split
- Divide the total equally per person. Simple and low-drama, and fair when everyone is home similar amounts and rooms are similar sizes.
- Per-room or per-income weighting
- Charge more to the larger room or ensuite. Useful when bedrooms differ a lot in size or comfort.
- Usage-weighted
- Adjust for obvious heavy users — someone running a bar fridge, gaming rig or electric heater all winter. Hard to measure precisely, so keep it rough and agreed.
- Occupancy-adjusted
- Pro-rata for people who are away a lot or move in mid-quarter, so nobody pays for weeks they were not there.
Tools that keep the peace
The friction in share-house bills is rarely the maths — it is the chasing. A shared expense app (there are several free ones) lets the account holder log the bill and split it automatically, sends reminders, and keeps a running tally so nobody argues about who paid last quarter. Setting up a recurring split the day each bill lands turns a monthly negotiation into a two-tap task.
A shared house bank account or a standing agreement where everyone transfers a fixed amount each fortnight (trued-up when the real bill arrives) smooths out the lumpiness of quarterly billing. The goal is to make paying the boring default, so energy never becomes the thing the house fights about.
The saving everyone shares: a cheaper plan
The single biggest lever in a share house is not how you split the bill — it is how big the bill is in the first place. Share houses often run high usage (more people, more devices, older shared appliances) yet nobody takes ownership of switching, so the house sits on a default plan for years. Whoever holds the account can fix that in a few minutes, and the saving is split across everyone.
Because a share house usually has a solid amount of usage across the day, comparing on your real bill rather than a headline rate is worth doing properly. EnergySorted compares the whole market on your actual usage for a flat annual fee and takes no retailer commissions — so the account holder gets an honest cheapest-plan answer, and the whole house benefits from the lower bill.