What will that flat cost to heat and power?
Floor area, EPC rating, how many of you there are and how warm you like it. Those four things set most of an energy bill, and you can check three of them before you sign a tenancy. The answer comes as a range, because pretending to pounds of precision here would be a lie.
Estimated monthly energy cost
£98 to £133
Roughly £1,180 to £1,596 a year, gas and electricity combined, averaged across seasons. Winter months will sit well above this, summer well below.
What drives the number
A planning estimate, not a quote
Unit rates and standing charges move with the Ofgem price cap, which is reviewed every three months, and your actual tariff will differ from the average. Treat this as a budgeting figure for comparing flats, then check a real quote against your chosen supplier once you have an address.
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Common questions
What does an EPC rating actually mean for my bills?
An Energy Performance Certificate grades a property from A (most efficient) to G (least) based on its fabric: insulation, glazing, heating system and so on. It is the best single predictor of heating costs you can check before signing. The practical gap is large: a D-rated flat typically costs noticeably more to heat than a C, and an F or G flat can cost more than double, because heat simply leaves the building faster.
How do I find a property's EPC?
Search the government's EPC register at gov.uk (search for "find an energy certificate"). It is free and covers England and Wales; you just need the postcode. The certificate shows the rating, the estimated energy costs, the total floor area, and a list of recommended improvements. Listings are legally required to show the rating, but the full certificate has far more useful detail.
Does my landlord have to improve a bad EPC rating?
In England and Wales, privately rented homes must currently meet a minimum of EPC E, with limited exemptions; letting an F or G property is generally unlawful. Government policy has been moving towards requiring EPC C on rentals, with dates shifting over the years, so check the current position on gov.uk. Either way, a tenant cannot usually force upgrades beyond the legal minimum, which is why the rating is worth checking before you sign rather than after.
Why do two identical flats have different bills?
Behaviour, mostly. Thermostat setting is the big one: each extra degree adds several percent to heating costs. Hours at home, shower length, appliance habits and how many rooms you actually heat all compound. Position in the building matters too: a middle-floor flat borrows heat from neighbours above and below, while a top-floor or end-of-terrace flat with the same floor plan loses more through the roof and walls.
What are standing charges?
A standing charge is a fixed daily fee for being connected to gas and electricity, payable even if you use nothing. With both fuels it commonly adds up to £20 to £30 a month depending on region and tariff. It is why a small efficient flat never gets a bill anywhere near zero, and why comparing tariffs on unit rate alone can mislead.