Electricity Cost Calculator

Electricity is measured in kilowatt-hours (kWh). One kWh is the energy used by a 1,000-watt device running for 1 hour. Your electricity bill is the total kWh consumed multiplied by your rate (price per kWh). Cost formula: Cost = Power (kW) × Hours × Price per kWh. A 2,000W electric heater running 5 hours a day at €0.30/kWh: 2 × 5 × 0.30 = €3/day = €90/month. Biggest energy consumers at home: Electric heating/cooling (40–50% of bills), water heater (15–20%), refrigerator (10–15%), washer/dryer (5–10%), lighting (5%). Targeting these has the most impact on bill reduction. Energy labels: EU energy labels range from A (most efficient) to G (least efficient). An A-rated fridge uses roughly half the electricity of a D-rated model. For high-usage appliances, energy efficiency pays back quickly. Smart tips: Run dishwashers and washing machines at night (off-peak rates where applicable), replace incandescent bulbs with LED (75% less energy), unplug devices on standby, and insulate your home — heating losses through walls and windows are the single biggest energy cost for most households.