If you’re living in a two-bedroom flat, you might be wondering what the average gas and electricity bill looks like in 2025.

Your energy use is shaped by the number of people living there, the energy efficiency of your home, your heating system, and the type of tariff you’re on.

In this guide, we’ll explain the current average gas and electricity bill for a two-bedroom flat in the UK, break down typical usage, explore what factors affect your bills, and share energy-saving tips to help you cut costs all year round.

Key Points

• The average gas and electricity bill for a two-bedroom flat depends on usage, occupancy, lifestyle, and tariff type.
• Energy prices in the UK are regulated by the Ofgem price cap, updated quarterly.
• Typical usage for a two-bed flat is around 2,800 kWh of electricity and 10,000 kWh of gas per year, according to Ofgem.
• Costs can vary significantly based on your heating system, whether you have insulation, and whether you work from home.

What Affects Energy Bills in a Two-Bedroom Flat?

The cost of running a two-bedroom flat isn’t decided solely by the size of the property. There are several other factors play a significant role in how high or low your energy bills turn out to be each month. Here’s a closer look at the biggest contributors:

Number of residents

The more people living in the property, the more energy is typically used – particularly for lighting, hot water and cooking. For example, a flat shared by two adults and a child is likely to use significantly more energy than one occupied by a single person. Additional residents mean more showers, more washing cycles, more devices being charged and more meals being cooked.

Home working

Remote work has become more common, and with that comes increased daytime energy use. If you’re home throughout the day, the heating may be left on for longer in winter, and appliances like kettles, laptops and lighting will be used more often too. Over the course of a year, this can add hundreds of pounds to your bill compared to a household that’s empty throughout the day. You can be conscious about how much energy you use when you work from home, though.

Heating system

The type of heating system your flat uses has a big impact on your energy bills. Gas central heating is usually cheaper than electric systems, since electricity costs more per unit than gas. Flats with storage heaters or electric radiators, common in buildings without gas connections, often see higher winter bills, especially if they rely on outdated systems. Newer electric heat pumps and panel heaters may offer better efficiency but still depend heavily on tariff costs.

Appliances and habits

The types of appliances you have in your home (and how you use them) can also make a big difference. Applicances like tumble dryers, dishwashers, electric ovens and power showers use a lot of energy. If you leave devices on standby, run half-full washing loads, or boil a full kettle for just one cup of tea, then you’re likely inflating your energy bills. Smarter usage, like running full washing loads or air-drying laundry, can offer big savings.

Energy efficiency

A well-insulated flat retains heat more effectively, meaning you don’t need to use as much gas or electricity to stay warm. Features like double glazing, proper loft and wall insulation, modern boilers and smart heating controls can all reduce energy demand. Energy Performance Certificate (EPC) ratings give an overview of how efficient your home is, and higher-rated homes typically cost less to run.

Tariff type

The type of energy tariff you’re on can have a direct impact on your rates. Fixed tariffs lock in a rate for a set period, helping you avoid price increases. On the other hand, variable tariffs move with the market and may rise unexpectedly. If you’re on an Economy 7 or other time-of-use tariff, your energy costs will vary depending on when you use power. Using energy during peak hours can be a lot more expensive than off-peak, so it’s always a good idea to review your tariff and compare suppliers.

UK Energy Prices in 2025 (Ofgem Price Cap – Current Rates)

The Ofgem price cap limits how much suppliers can charge for energy on default tariffs. As of the latest update in July 2025, here are the standard rates:

Energy Type	Unit Rate (p/kWh)	Daily Standing Charge
Electricity	25.73p	51.37p
Gas	6.33p	29.82p

Source: Ofgem

Note: These are averages across the UK and include VAT.

Average Electricity Usage in a Two-Bedroom Flat

Most two-bedroom flats use between 2,500 and 3,000 kWh of electricity per year. This covers:

• Lighting
• Cooking
• Charging devices
• Laundry and appliances
• Electric heating (if applicable)

Usage Estimate	Annual Cost (2025)	Monthly Cost
2,800 kWh	£720	£60

Electric-only flats may use more electricity overall, pushing bills higher — especially in winter.

Average Gas Usage in a Two-Bedroom Flat

Gas is typically used for central heating and hot water. A two-bedroom flat using gas heating consumes around 9,000 to 10,000 kWh per year.

Usage Estimate	Annual Cost (2025)	Monthly Cost
10,000 kWh	£633	£53

Your gas bill will depend heavily on:

• How warm you keep your flat
• How long you’re home each day
• Your boiler’s efficiency

Estimated Monthly Energy Bills for Two-Bedroom Flats in 2025

Utility	Average Usage	Annual Estimate	Monthly Estimate
Electricity	2,800 kWh	£720	£60.
Gas	10,000 kWh	£633	£53
Total	–	£1,353	£113

This is based on the July 2025 price cap. Bills may vary by region, supplier, and usage habits.

How Do Energy Bills for Two Bed Flats Compare?

• One-bedroom flat: Lower bills (approx. 20–30% less) due to reduced heating and lighting needs
• Three-bedroom house: Significantly higher bills, especially for gas heating and larger appliances

Ways to Lower Your Energy Bills

Even if you live in a relatively energy-efficient flat, there are still a few simple ways to cut costs around the house:

Heating

• Use a smart thermostat to regulate temperature by room or schedule.
• Bleed your radiators regularly to improve efficiency.
• Keep your thermostat at a steady 18–20°C where possible.
• Seal draughts around windows and doors using foam tape or brush strips.
• Consider energy-efficient upgrades such as wall and loft insulation — you may qualify for support through the ECO scheme or local grants.
• Consider energy-efficient home upgrades like insulation. An EOS grant might be able to help with this.

Kitchen

• Only boil the water you need in the kettle to reduce energy waste.
• Use pan lids to speed up cooking and reduce energy use.
• Defrost your fridge and freezer regularly to keep them running efficiently.
• Keep your fridge at 5°C and your freezer at -18°C for optimal energy performance.
• If you have a dishwasher, only run it with a full load and use eco settings where available.
• Avoid leaving the oven door open after cooking, and use residual heat effectively.

Laundry

• Wait until you have a full load before using the washing machine.
• Wash clothes at 30°C or lower to save energy — it’s often just as effective.
• Use the highest spin setting to remove excess water and reduce drying time.
• Air dry clothing on racks or lines instead of using a tumble dryer.
• Clean your washing machine filter regularly to ensure efficient performance.

Lighting & Devices

• Replace traditional bulbs with long-life LED bulbs throughout the flat.
• Turn off lights when you leave a room, and use daylight where possible.
• Switch appliances off at the wall, standby mode still uses power.
• Install plug timers or smart plugs to control standby consumption.
• Use energy-efficient appliances with good EPC ratings where possible.

Other Tips

• If you’re on an off-peak tariff, run energy-intensive appliances like dishwashers and washing machines during cheaper nighttime hours.
• Use appliance delay-start functions to schedule use during off-peak times.
• Compare suppliers annually and consider switching using a trusted service backed by the Energy Switch Guarantee.
• Consider a smart meter to track and manage energy use more effectively.

Are You Paying Too Much?

You might be paying more than you need to, especially if you’ve been on the same tariff for over a year. Here’s how to check:

• Look at your current unit rate and standing charge
• Compare against the Ofgem price cap
• Use a comparison site to explore cheaper tariffs
• Consider a fixed-rate plan if prices are expected to rise

FAQs

What is the average energy bill for a two-bedroom flat in 2025?

The combined average gas and electricity bill for a two-bedroom flat in 2025 is approximately £113 per month, based on standard usage and price cap rates. This varies depending on factors like occupancy of the flat, energy usage, and the type of heating system you are using.

How many kWh does a two-bedroom flat use?

Most two-bedroom flats in the UK consume between 2,500 and 3,000 kilowatt hours (kWh) of electricity annually. This covers lighting, kitchen appliances, laundry and entertainment.

A two-bedroom flat typically consumes around 9,000 to 10,00r0 kWh of gas per year, but this can vary based on boiler type and age, heating habits and how well insulated the property is.

Is it cheaper to have gas or electric heating?

Gas is generally cheaper per kWh. Flats using only electric heating often face higher overall bills unless paired with modern, efficient systems.

Can I reduce my energy bills without switching supplier?

Absolutely. There are a few things you can try at home to lower your bills, including:

• Turning off appliances at the wall when you’re not using them
• Taking shorter showers
• Using smart heating controls
• Switching to LED light bulbs

Does working from home increase your energy bills?

Yes. Staying home during the day increases both electricity and heating use, especially in colder months.

Sources

• Ofgem – Price Cap Updates (2025)
• ONS – UK Household Energy Usage
• Energy Saving Trust – Ways to Save Energy
• Energy Switch Guarantee