The recent popularity of photovoltaics in Poland can be described as a small miracle. As many analyses show, our country is experiencing the fastest development of photovoltaics in Europe. Along with this popularity, devices supporting this system, especially energy storage devices , have gained in importance. 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. Let's start!
Photovoltaics rules
The world is changing, and so is the way we heat our homes. Until recently, solid fuels, primarily coal, reigned supreme, but these solutions are now being replaced by renewable energy sources, especially photovoltaics. The annual report of the Institute for Renewable Energy (IEO) leaves no doubt that Poland is in the lead in this respect, second only to Germany. As we can read - the annual increase in installed capacity in PV reached 3.7 GW, and the installed capacity at the end of 2021 reached 7.67 GW.
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It is no wonder why there is such a great desire to invest in photovoltaic installations, because this is of course due to economic issues. Independence 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, this is not always possible, which is why an appropriate energy storage device is increasingly selected for a photovoltaic installation to store it and use it later.
How does an energy storage system with a photovoltaic installation work?
Energy storage (also 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 allows for better use of green energy, but also to provide any emergency power supply, which can happen during a power grid failure. The principle of operation of this device is therefore 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 additionally produced energy is sent to the grid. During the daily use of the building, the storage slowly depletes and the cycle begins again. If the storage is discharged to a certain value, energy begins to be drawn from the grid.
Benefits of investing in an energy storage facility
The benefits are invaluable, as we will soon see. We have already mentioned some of them, but now we will expand on the subject. One of the main advantages is energy independence , an absolutely important issue in today's uncertain times, when prices change dynamically. Having our own energy storage, we do not 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 contribute our important brick to the well-being of the planet. Storing and obtaining energy from renewable sources creates ideal conditions for the extraction of fossil fuels to gradually decrease.
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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, a 10 kWh storage should be selected, but these are quite “rigid” bills that do not fully take into account the actual needs of the household. And this is key in this area. It may be that a smaller battery, the cost of which will be lower, will be enough for our installation. To determine this precisely, we need to answer the most important questions about the energy consumption in our home. It is worth adding up the total energy consumption of various devices, such as a refrigerator, TV, laptop, and calculating how much we use for lighting, which will allow us to determine the maximum Watt power. It is also good 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 device, because it provides huge benefits when combined with a photovoltaic installation . However, remember to match it perfectly to your needs so that it can fulfill its tasks as best as possible.
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