Home/Blog/News/Новини магазину/Solar power plant calculator online: calculation of generation, savings and payback of a solar power plant

Valentyn Tsykhan • 12.06.2026

Online solar power plant calculator — calculation of SES generation and payback

Switching to your own electricity generation is no longer exotic. More and more households and small businesses in Ukraine and Europe are considering solar panels as a way to reduce electricity bills, insure against outages, and generate additional income from selling surpluses. However, before investing in a station, you should clearly understand how much energy it will actually produce in your conditions and when it will pay for itself. That is why we have created a free online solar power plant calculator.

What a calculator can do

The tool allows you to get a detailed forecast of the future solar power plant operation in a few minutes without complex formulas and calls to designers at the stage of preliminary calculations. It is enough to specify the main parameters: country and region of location, power and angle of inclination of the panels, orientation azimuth, local electricity tariff and, optionally, your monthly consumption and tariff for selling surpluses.

In response, the system calculates the expected generation per hour, day, week, month and year, the number of panels in the array, annual electricity savings, profit from selling excess energy at a "green" tariff, the coverage ratio of own consumption and the approximate payback period of the station. A separate table shows the monthly dynamics of production, which allows you to see seasonal fluctuations and plan consumption throughout the year.

An important detail: the calculation is not based on an approximate estimate "by eye", but on a full-fledged mathematical model of solar radiation. Extra-atmospheric radiation, the atmospheric transparency index and conversion to an inclined plane using the Liu–Jordan method are taken into account. Thanks to this, the results are as close as possible to real indicators, although, of course, the actual output always also depends on the weather and the condition of the equipment.

Calculations for all of Europe and four interface languages

The calculator is suitable not only for Ukrainian users. It supports calculations for all regions of European countries, including Ukraine, so it will take into account your insolation depending on your geographical location. The interface is available in four languages - Ukrainian, English, Polish and Russian, which makes the tool convenient for a wide range of users regardless of their country of residence.

Who is it useful for?

The calculator will be useful for homeowners weighing the feasibility of an investment, entrepreneurs planning to reduce electricity costs, as well as anyone who wants to calculate the potential profit from selling excess generation. Instead of abstract promises from sellers, you get concrete numbers that you can rely on when making a decision.

Another tool for precise selection

When the general parameters of the station are determined, the practical question of component compatibility arises. For this, we recommend using a separate PV calculator that calculates the number of solar panels for a specific inverter. It helps to correctly assemble the array so that the voltage and power of the photovoltaic cells correspond to the characteristics of the selected inverter, without the risk of underloading or exceeding the permissible values. The tool is available at the link: https://www.comfortlife.market/instrumenti/rozrahunok-kilkosti-fotoelementiv-dlya-invertora-uk/

Try it now

Planning a solar power plant should start with numbers, not intuition. Use our calculator to find out the real potential of your future solar power plant, estimate savings and payback period. It's free, does not require registration and takes a few minutes.

Go to the calculator: https://www.comfortlife.market/solar-calc/