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PV pays off - self-consumption for private households

The price of energy is rising, a fact reflected in every electricity bill you receive. The solution: become an independent electricity producer and free yourself from future price increases.

Self-consumption means that the self-generated solar power is used immediately within your property and is not fed into the grid. This increases your own level of autonomy and frees you from the burden of future hikes in energy prices. In many countries, the price of self-generated solar power is already cheaper than the cost of purchasing electricity from the grid! A high proportion of self-consumption also ensures rapid payback of the cost of your photovoltaic system. Your aim must be to use as much of the solar power you generate as possible.


Optimised self-consumption for private homes:
With low power categories, Fronius inverters make it possible to achieve a high self-consumption component. The integral energy management relay and the S0 input (e.g. Fronius Galvo) can be used to control a consumer, thereby further increasing self-consumption.



Optimised self-consumption for commercial systems:
With their power classes and interfaces the Fronius inverters are also perfect for commercial self-consumption systems. Therefore the electricity bill of your business can be reduced, as electricity from your solar system is cheaper than the electricity from the grid.


      How can I increase my level of self-consumption?


Your investment in the future:
/  Photovoltaic system on single-family home in Central Europe
/  Annual power consumption: 3500 kWh

System orientation:
30° slope, EAST/WEST

1.5 KWP

2.5 KWP

3.5 KWP
PV generated [kWh]  1,250  2,150  3,000
Self consumption [kWh] 740 970 1,100
Degree of self-sufficiency 21% 28% 31%
System orientation:
30° slope, SOUTH

1.5 KWP

2.5 KWP

3.5 KWP
PV generated [kWh] 1,500 2,550 3,600
Self consumption [kWh] 760 970 1,100
Degree of self-sufficiency 22% 28% 31%

Degree of self-sufficiency:
The degree of self-sufficiency is the percentage of energy consumption covered by the self-produced electricity. This electricity therefore does not have to be purchased from an external supplier, reducing your bill accordingly by the degree of self-sufficiency.


Comparison between East/West-facing system and South-facing system:
The diagram shows the extent to which the power requirement of the home is covered by the self-generated power. It clearly demonstrates that with an east/west-facing system, the power generated is distributed more evenly throughout the day than with a south-facing system. This means that power is available earlier in the morning and later into the afternoon.

Comparison between East/West-facing system and South-facing system
Comparison between East/West-facing system and South-facing system
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