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All-in-One Energy Calculator

Whole-home energy cost, CO₂e & savings analysis

Energy Consumption Inputs

kWh/mo €/kWh
m³/mo €/m³
kWh/mo €/kWh

CO₂ Emission Factors (Editable)

kg CO₂e/kWh
kg CO₂e/m³

Savings Assumptions (Editable)

% of electricity % reduction
% of electricity
% of heat (if gas)

Annual Energy Cost

Carrier Annual Use Annual Cost
Total

Per household member: /yr

Annual CO₂ Emissions

Source Annual kg CO₂e
Total Household CO₂e

Upgrade Savings Matrix

Measure kWh/m³ Saved €/yr Saved kg CO₂e/yr
Combined Total

Why This Matters

The average European household spends over €2,500/year on energy, yet simple measures like LED lighting swaps and standby elimination can cut electricity bills by 10% or more — with payback periods under two years. Combining behavioural changes (thermostat setpoints) with technology upgrades delivers compounding savings that also reduce your CO₂ footprint by hundreds of kilograms annually. If you're ready to act on these savings, get free quotes on TUNA to find certified installers in your area.