The fact that photovoltaics has gained popularity in Poland in recent years can be described as a small miracle. As many analyzes show, our country is experiencing the fastest development of photovoltaics in Europe. With this popularity, devices supporting this system, especially energy storage, have become more important. Let's find out what they are, how they work with a photovoltaic installation, what benefits they provide and how they can be selected for photovoltaics. Now we'll begin!
Photovoltaics rules
The world is changing, and so is the way we heat our homes. Until recently, solid fuels, primarily coal, reigned supreme, but now these solutions are being abandoned in favor of renewable energy sources, especially photovoltaics. The annual report of the Institute of Renewable Energy (IEO) leaves no doubt that Poland is at the forefront in this respect, second only to Germany. As we can read - the annual increase in installed capacity in PV reached as much as 3.7 GW, and the installed capacity at the end of 2021 reached 7.67 GW.
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It is not surprising why there is such a great desire to invest in photovoltaic installations, because it is obviously due to economic issues. Becoming independent from rising electricity prices is crucial here, and let's not forget that in addition to reducing bills, we also contribute to environmental protection. Although it is most profitable to use energy on an ongoing basis, it is not always possible, which is why more and more often an appropriate energy storage facility is selected for a photovoltaic installation to store it and use it later.
How does energy storage with a photovoltaic installation work?
Energy storage (otherwise known as photovoltaic batteries) allows you to store energy produced during the day and use it when the photovoltaic installation is not working, i.e. after sunset. This enables better use of green energy, but also ensures possible emergency power supply, which may happen during a power grid failure. The principle of operation of this device is not complicated. The energy produced from photovoltaics is first used for current needs, and the surplus goes to the energy storage until the device is fully charged. Once this happens, the additional energy produced is sent to the grid. During the daily use of the building, the warehouse is slowly depleted and the cycle begins again. When the storage is discharged to a certain value, energy begins to be drawn from the grid.
Benefits of investing in energy storage
The benefits cannot be overestimated, as we will soon see. We have already mentioned some of them, but now we will expand on the topic. One of the main advantages is energy independence , an absolutely important issue in today's uncertain times when prices change dynamically. With our own energy storage, we don't have to worry about this. We store the energy obtained from photovoltaic panels and use it when needed. Such energy is very environmentally friendly, so by having such an installation, we make an important contribution to the well-being of the planet. Storing and obtaining energy from renewable energy sources creates ideal conditions for the gradual reduction of fossil fuel extraction.
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How to choose an energy storage for photovoltaics?
It can be adjusted according to the traditional rule that, for example, for a 10 kW photovoltaic installation you need to select a storage unit of 10 kWh, however, these are quite "rigid" bills that do not fully take into account the actual needs of the household. And this is crucial in this area. It may be that a smaller battery will be sufficient for our installation, and the cost will be lower. To determine this precisely, you need to answer the most important questions about energy consumption in your home. It is worth summing up the total energy consumption of various devices, such as a refrigerator, TV, laptop, and counting how much we use for lighting, which will allow us to determine the maximum watt power. It is also a good idea to consider how much energy is needed in the event of unexpected events, such as a network failure.
There is no doubt that it is worth investing in an energy storage facility, because combined with a photovoltaic installation it provides huge benefits. However, remember to adjust it perfectly to your needs so that it fulfills its tasks as best as possible.