To install any domestic photovoltaic system it is necessary to have an inverter, that is a device that converts the current generated by solar energy, continuous, into alternating, typical of domestic power supplies. Here's how to buy it and how much it costs
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The energy generated by a solar panel is direct current (DC), so if we want to use it for domestic use it is necessary to have an inverter: in fact, the power supply of something that would normally connect to a 230 V three-hole domestic socket is normally into alternating current (AC) and the inverter is the very device that does this conversion.
THEphotovoltaic inverter it really is the heart of every plant, even the smallest and simplest. And it greatly affects the general cost of a system, despite the fact that when we talk about photovoltaic costs we often refer only to those of the panels (certainly the highest but not the only ones).
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Of course the cost of an inverter depends on the desired power and this must be choice based on the sum of the powers of the 220V users that we want to feed at the same time. If, for example, we have a 2,5 kW domestic photovoltaic system (such as those for a balcony), we should choose a 3kW power inverter. The cost of which is around between the 400 and the 600 euro.
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Generally when you decide to install a system from scratch, all costs are included, and very often the solutions have theintegrated inverter, but if we find ourselves in the situation of having to change only the inverter, this is the investment to be taken into account (if possible).
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