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How to calculate the electricity needs

precedebte In the post we examined the available area. Now let's concentrate on the needs of
. That is, the electricity demand in order to properly size our photovoltaic system. As you can imagine, the need emerges from analysis of electricity bills. You'll notice I use the plural. Bills. And do not bill.

Yes, because it is not enough reading the last electricity bill. An accurate assessment would be based on annual averages for the last three or four years. I realize, however, that it is often difficult to recover all these bills. A compromise is therefore made
the meter readings for the past twelve months. If the time interval used as a reference was less than twelve months, the economic estimates might not have the accuracy required.

Because the analysis has to cover its bills twelve months? Basically for two reasons. The first depends on the need for reproducible data on the behavior the sun, for the purposes of calculating the capacity of the plant. The second reason is related to needs, well, more mundane.
you remember we talked about the exchange in place, the service provided by your local area network (ENEL, for instance), which allows you to enter or withdraw the energy from the network. The local carrier shall, therefore, to make the adjustment
. When? At the end of the year. That is, after twelve months.

I can confirm that, based on my experience (customers followed) and indirect (consultation of existing statistics), currently the average annual consumption for a normal home users are around 3000-4000 kWh.
As you may have noticed, I am referring to energy consumption and costs ever. I set the values \u200b\u200bin kWh per year and expressing them in euro. Why? What concerns us is the measures relating to energy consumed, not the amounts actually paid for economic support that consumption. They are not the same thing. Each time the ENEL
increases the cost per unit of electricity, the amount indicated on the invoice economic increases, although actual consumption has not changed. Is increased, ie, the amount expressed in euro, but not the amount of electricity consumed, as indicated in kWh.