Heating costs depend on energy use, the type of fuel and your tariff. A simple estimate can help you understand monthly payments or compare heating systems. To check an actual bill, use the figures shown on your heating statement or energy contract.
The basic heating-cost formula
Heating cost = consumption × price per unit + fixed charge. Keep the units consistent: consumption in kilowatt-hours (kWh) and the unit price in euros per kWh. Convert a monthly fixed charge to an annual figure before adding it.
Example using illustrative figures
With annual use of 12,000 kWh, a unit price of €0.12 per kWh and a €120 annual fixed charge, usage costs are €1,440 and the total is €1,560 per year. Real tariffs and statements may include additional items.
The heating cost calculator provides a quick estimate. If you heat with electricity or use electric hot water, also try the electricity cost calculator. The household budget calculator helps spread expected costs across your monthly plan.
Compare consumption fairly
Compare not only the euro amount but, where possible, energy use per square metre and year. Building size, insulation, age, weather, room temperature and hot water all affect demand. The German Heating Check from co2online explains which details are needed and how to interpret comparison values.
What to check on a heating statement
- Does the billing period and floor area look correct?
- Are meter readings and consumption plausible?
- Were the unit price and fixed charge transferred correctly?
- Are heating and hot-water costs shown clearly?
Figures above are examples, not a tariff recommendation. A consumer advice centre can help where a bill appears incorrect.
Monthly instalments versus annual costs
A monthly direct debit is usually an advance payment. The final amount is determined by actual consumption over the billing period. Divide annual costs by twelve for a household budget, but compare the bill using the full period. If prices change or you move home, make sure the consumption and tariff periods are aligned.
Why is comparing with a neighbour difficult?
Floor area, insulation, apartment position, household size and heating habits all differ. Use cost-per-square-metre benchmarks as a guide only and take the building type into account.