Estimated results
Total annual energy cost
£2,000
Biggest saving opportunity
Heating
Priority recommendation
Category-specific tips
Methodology
How the bill breakdown is estimated
This calculator uses a UK household end-use benchmark model inspired by DESNZ and historic BEIS domestic energy consumption breakdowns. In a typical fossil-heated home, space heating is usually the largest energy cost, followed by hot water and then electricity-led end uses such as appliances, lighting, and cooking. We adjust that benchmark using three practical modifiers: occupancy, home size, and heating type.
Higher occupancy increases hot water, cooking, and appliance shares. Larger homes increase heating demand and usually lift lighting demand slightly. Electrically heated homes tend to devote a larger share of spend to heating, while heat pump homes generally reduce the heating share because each unit of electricity delivers multiple units of useful heat. This is a planning model rather than a meter-level audit, but it is a strong first-pass estimate for households trying to identify where the biggest savings opportunities usually sit.
Related guides
How to Reduce Energy Bills
Turn your bill breakdown into a practical action list for the biggest savings.
Home Energy Audit Checklist
Match higher bill categories to the parts of the home worth auditing first.
LED Lighting Savings
Understand the quick wins on lighting loads and whole-home electricity use.