How to calculate the installation power

When choosing the power of the installation, it can be suggested that in Polish insolation conditions, for each 1000 kWh of energy consumed annually, 1.25 kWp of the power of the photovoltaic installation is selected.

• Ek – amount of energy consumed per year [kWh]
• a – percentage share of current own consumption [%]
• b – percentage share of the amount of energy fed into the grid [%]
• rebate- 0.8 per 1 kWh for installations up to 10 kW per 1 kWh, 0.7 kWh for installations with a capacity of 10-50 kW.
• a+b = 100%
• Yield – annual energy production from 1 kWp of installed capacity by the PV installation [kWh]

Although you can find many photovoltaic calculators on the Internet that can calculate the power of a photovoltaic installation without leaving your home, we encourage you to consult us free of charge, so that, based on consumption, assembly possibilities, technical design and parameters of photovoltaic panels, you can precisely assess what size of the system will be the most beneficial. Why is it so important? The power of the photovoltaics installed on your roof is influenced not only by the total electricity consumption, but also by technical aspects: the angle of the roof, its orientation or even your lifestyle. These are aspects that even the best photovoltaic calculator will often not take into account.

An example of the cost of installation is presented in the table below. Of course, these are estimates due to the variety of roof coverings on your home.

How to choose the heat pump power correctly?

Although there are plenty of websites on the Internet offering estimation of the heat demand of buildings, none of them is able to return the correct and reliable value in 100%. This parameter is affected by so many factors that without experience and professional analysis of a specific building, the selection of the correct device is in fact hardly possible.

The power of the heat pump can be underestimated on the one hand, but also overestimated.

Both situations have a number of consequences that ultimately affect the customer’s satisfaction with the applied solution.

In extreme cases, it may turn out that due to the wrong selection of the device, it is not able to provide the required amount of energy to heat the building or it works beyond its nominal values. This shortens its lifespan and the energy consumption is higher. In this case, the whole solution becomes uneconomical. 

Customers appreciate our way of working, because each of our offers is preceded by a free consultation with a technical advisor at the place of the planned investment. This guarantees that the proposed solution will be based on actual data and will give full satisfaction from use.