Solar PV installation cost calculator
Calculate solar panel installation costs in Poland: net cost, VAT, Mój Prąd subsidy, post-subsidy cost, annual production and payback period. 2026 prices. Free.
Energy Calculators
Current for 2026How we verify data: Methodology →
Electricity Cost Calculator
Wondering how much it costs to run your air conditioner, washing machine, or computer? Our electricity calculator works out energy consumption in kWh and daily, monthly, and annual costs for any electrical appliance. Just enter the wattage, daily hours of use, and your electricity unit rate.
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How we calculate electricity costs
Daily consumption (kWh) = power (W) ÷ 1000 × hours of use. Monthly = daily × 30. Annual = daily × 365. Cost = consumption (kWh) × unit rate (PLN/kWh). The unit rate is the energy component on your electricity bill — typically PLN 0.65–0.85/kWh net.
Example electricity cost calculation
Air conditioner: 1000 W, running 4 hours/day, electricity rate PLN 0.75/kWh. Daily consumption: 1000 W ÷ 1000 × 4 h = 4 kWh. Daily cost: 4 kWh × PLN 0.75 = PLN 3.00. Monthly cost: PLN 3.00 × 30 = PLN 90.00. Annual cost: 4 kWh × 365 days × PLN 0.75 = PLN 1,095.00.
Frequently asked questions about electricity costs
The calculator provides an estimate based on the rated wattage and usage hours you enter. Actual consumption may vary depending on the appliance model, settings, and operating conditions. Electricity prices vary by tariff and supplier — check your current rate on your bill or contract.
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Electricity costPLN 90.00Monthly cost
- Annual cost
- PLN 1,095.00
- Daily consumption (kWh)
- 4
- Monthly consumption (kWh)
- 120
- Annual consumption (kWh)
- 1,460