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Energy Calculators

Electricity consumption and energy costs are among the largest household expenses. Our calculators help you work out electricity bills, assess the profitability of solar PV panels, and improve the energy efficiency of your home. Tools cover current tariffs, available subsidies and real-world usage conditions. Pick a calculator below.

Electricity and renewable energy in Poland

Electricity consumption in an average Polish household ranges from 2,000 to 5,000 kWh per year and is the primary driver of energy bills. Electricity costs depend on the distribution tariff, fixed charges and the unit price of electricity, which for residential customers in Poland is typically 0.60–0.80 PLN/kWh. The electricity consumption calculator lets you work out the monthly cost of any appliance or an entire household. Solar PV panels are the most popular way to cut energy costs. A 5–10 kWp installation can cover 70–100% of the annual energy demand of a typical detached house. Payback periods range from 6 to 10 years when combined with the net-billing settlement system and subsidy programmes such as Mój Prąd and the thermomodernisation tax relief. The solar PV calculator estimates energy yield, annual savings and payback period. Energy efficiency directly affects heating bills. An energy audit, wall insulation and window replacement can reduce energy demand by 40–60%. A building energy class is expressed in kWh/(m² year) and determines running costs. Heat pumps, heat recovery ventilation and building automation are further tools for improving efficiency. Our energy calculators support informed decision-making — from choosing the right electricity tariff to planning a renewable energy installation and optimising heating and cooling costs.

See also: Salary and payroll calculators · VAT calculators · Loan calculators

Frequently asked questions about energy

How to calculate a device's electricity consumption?

Consumption (kWh) = power (W) × usage time (h) / 1000. E.g. 100W × 8h = 0.8 kWh/day.

How much does 1 kWh cost in Poland?

Household electricity costs approximately 0.60–0.80 PLN/kWh (including distribution tariffs).

Is solar PV worth it?

At current energy prices, a PV installation pays back in about 7–10 years. After that, electricity is essentially free.

Net-metering is quantity-based (1:1); net-billing (since 2022) is value-based, at the wholesale price of exported energy.

In Poland, 1 kWp generates approximately 900–1100 kWh/year depending on regional sunlight.

Heating cost = energy demand (kWh) × fuel/carrier price. Depends on insulation and heating system.

A heat pump extracts energy from air, ground or water and converts it to heat with COP ≥ 3.

Mój Prąd programme (grant up to 6,000 PLN), thermomodernisation tax relief and regional programmes.

Average consumption is about 2,000–3,000 kWh/year for flats and 3,500–5,000 kWh/year for houses.

Yes — the electricity calculator supports G12 (day/night) and G11 (flat-rate) tariffs.